HOOCCH2CH2COOH + H2NCH2CH2NH2 ----> Polymer + H2O is the chemical equation for formation of a polymer via a condensation reaction from the monomers succinic acid (hoocch2ch2cooh) and ethylenediamine (h2nch2ch2nh2).
A condensation reaction is a chemical reaction in which two smaller molecules combine to form a larger molecule, releasing a small molecule such as water or methanol as a byproduct. Condensation reactions are often used to synthesize polymer, which are large molecules made up of repeating units called monomers.
To write a chemical equation for the formation of a polymer via a condensation reaction from the monomers succinic acid and ethylenediamine, we can start by representing the monomers as follows:
Succinic acid: HOOCCH2CH2COOH
Ethylenediamine: H2NCH2CH2NH2
In a condensation reaction, the monomers combine through a dehydration synthesis reaction, in which a molecule of water is released as a byproduct. The resulting polymer consists of repeating units of the monomers linked by a covalent bond.
The general chemical equation for a condensation reaction between two monomers can be written as follows:
Monomer 1 + Monomer 2 --> Polymer + byproduct
In this case, the polymer produced by the condensation reaction between succinic acid and ethylenediamine would be a polyamine with repeating units of the monomers linked by a covalent bond. The chemical equation for the formation of this polymer via a condensation reaction would be:
HOOCCH2CH2COOH + H2NCH2CH2NH2 -> Polymer + H2O
It is important to note that the actual structure of the polymer produced in this reaction will depend on the specific conditions of the reaction and the specific monomers involved. The chemical equation provided is a general representation of a condensation reaction between these monomers and does not represent the exact structure of the polymer that would be produced.
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When you measured the pH of the 0.1M HCl solution, you placed 25mL of the solution in a 50mL beaker. Assume that you had done another measurement. If you had placed 50mL of 0.1M HCl in a 150mL beaker, which of the following is true?
1). The [H3O+] in the 50mL solution would be higher than the [H3O+] in the 25mL solution
2). The [H3O+] in the 50mL solution would be lower than the [H3O+] in the 25mL solution
3). The [H3O+] in the 50mL solution would be the same as the [H3O+] in the 25mL solution
If you had placed 50mL of 0.1M HCl in a 150mL beaker,then the [H3O+] in the 50mL solution would be the same as the [H3O+] in the 25mL solution. Therefore, option 3 is correct.
What is the solution ?Any mixture of one or more solutes that have been dissolved in a solvent is referred to as a solution. To create a homogenous mixture, a solute must dissolve in a solvent. To create a homogenous mixture, a solute must dissolve in a solvent.
A homogenous mixture of two or more components with particles smaller than 1 nm is referred to as a solution. Solutions come in many forms, including soda water, salt and sugar solutions, and others. Every element in a solution appears as a single phase.
Thus, option 3 is correct.
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how many ml of 0.2300 m naoh solution would be needed to reach a magenta phenolphthalein endpoint when titrating with 45.00 ml of 0.2596 m hcl solution?
50.79 mL of 0.2300 m NaOH solution would be needed to reach a magenta phenolphthalein endpoint when titrating with 45.00 ml of 0.2596 m hcl solution
The reaction is given as :
HCl + NaOH = NaCl + H2O
We will use the formula : M1V1 = M2V2
M1 = 0.2596 M
V1 = 45.00 mL
M2 = 0.2300 M
putting values :
0.2596 M x 45.00 mL = 0.2300 M x V2
V2 = 50.79 mL
So volume of NaOH solution = 50.79 mL
A full neutralization process that solution in a pink phenolphthalein requires equimolar concentrations of both NaOH and HCl solutions.
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one way to determine if a molecule is polar is to place it between two oppositely charged metal plates. what happens when polar molecu;es are placed between these
Polar molecules' poles point in the direction of the oppositely charged metal plate when they are sandwiched between the plates.
Positive and negative poles are found in opposite poles in polar molecules. For instance, water molecules will have their negative pole facing the positive end and vice versa when they are placed between two metal plates that have opposing charges.
The charges on the metal plate will force them to align themselves since opposing charges repel one another and like charges attract.
Therefore, when polar molecules are sandwiched between two metal plates with opposing charges, the poles will point in the direction of the plate with the opposite charge.
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consider the following two compounds: c6h13oh, 1-hexanol c6h13sh, 1-hexanethiol (a) which compound has the higher molar mass? (b) which compound has the higher boiling point?
'S' has more Molar Mass than 0.
Therefore easily say looking at molecule.
We can C₆H₁₃ SH has a higher Molar Mass.
C₆H₁₃OH has stronger Hydrogen Bonding interaction.
C₆H₁₃OH (High Boiling Point)
Molecular weight is the mass of a specific molecule and is measured in Daltons. exceptional molecules of the same compound could have special molecular weights because they comprise distinctive isotopes of the detail. The molar mass of a substance is the mass in grams of 1 mole of the substance.
The molar mass of a substance may be acquired through adding the molar loads of the atomic additives. The calculated molar mass can then be used to convert the mass and range of moles of the substance. Use the chemical method to locate the wide variety of atoms for every element inside the compound.
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The p of PbBr2 i 6. 60×10−6. What i the molar olubility of PbBr2 in pure water?
molar olubility:
M
What i the molar olubility of PbBr2 in 0. 500 M KBr olution?
molar olubility:
M
What i the molar olubility of PbBr2 in a 0. 500 M Pb(NO3)2 olution?
molar olubility:
molar solubility of PbBr2 in 0. 500 M KBr solution is 4S3 = 6.60 x 10–6 . PbBr2 ionizes as Pb2+ + 2Br-, molar solubility of PbBr2 in a 0. 500 M Pb(NO3)2 solution is 0.0181 moles/lit..
If molar solubility of PbBr2 is “S”, then solubility of Pb2+ is also “S” but that of Br- would be “2S”. Ksp = [Pb2+] [Br-]2 = (S) (2S)2 = 4S3 = 6.60 x 10–6 4S3 = 6.6 x 10–6,this gives Solubility S = 1.181 x 10–2 = 0.0181 moles/lit. solid's solubility (usually referred to as its molar solubility) is expressed as the concentration of the "dissolved solid" in a saturated solution. This would simply be the concentration of Ag+ or Cl- in the saturated solution for a simple 1:1 solid like AgCl. The other way to express solubility is through molar solubility, which is defined below. It is the number of moles of solute in one litre of saturated solution and is abbreviated with a lower case's'. It is expressed in moles per litre, also known as molarity.
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if all the n2 and h2 are consumed, what volume of nh3 , at the same temperature and pressure, will be produced?
0 degrees Celsius or one atmosphere are considered the norms for both temperature and pressure.A molar gas volume in STP is 22.4 liters / mole, according to what is reported.
What is relation between temperature and pressure?We find that temperature and pressure are linearly related, and if the temperature is on the kelvin scale, then P and T are directly proportional (again, when volume and moles of gas are held constant).
What happens to pressure when temperature increases?As the temperature increases, the average kinetic energy increases as does the velocity of the gas particles hitting the walls of the container. The force exerted by the particles per unit of area on the container is the pressure, so as the temperature increases the pressure must also increase.
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A 50 gram sample of delicious pork rinds is
placed in an open, constant pressure calorime-
ter that contains 3000 grams of water. The
temperature of the water increases by 47°C
when the pork rinds are combusted. The heat
capacity of water is 4.184 J/g °C. Assume the
heat lost to the calorimeter itself or to the air
is negligible. Which of the following is correct
for the SYSTEM?
The statement that is correct about the system is ∆H = +590 kJ.
What is correct for the system?We know that according to the first law of thermodynamics, energy can not be created nor destroyed but It can be converted from one form to the other. This implies that we can not loose energy, the energy that is supplied as the pork is combusted can be transferred to the water.
As such, we can be able to obtain the heat that enthalpy of the system can be obtained as the heat that is transferred to the water as follows;
∆H = mc dT
∆H = heat absorbed or evolved
m = mass of the water
c = Heat capacity of the water
dT = temperature change
Now we have;
∆H = 3000 * 4.184 * 47
∆H = +590 kJ
The magnitude of heat that has been transferred to the water is +590 kJ.
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Missing parts;
A 50 gram sample of delicious pork rinds is placed in an open, constant pressure calorimeter that contains 3000 grams of water. The temperature of the water increases by 47◦C when the pork rinds are combusted. The heat capacity of water is 4.184 J/g ◦C. Assume the heat lost to the calorimeter itself or to the air is negligible. Which of the following is correct for the SYSTEM?
1.) ∆U = +590 kJ
2.) ∆U = −11.8 kJ
3.) ∆H = −11.8 kJ
4.) ∆H = +590 kJ
5.) ∆U = −590 kJ
6.) ∆H = +11.8 kJ
7.) ∆U = +11.8 kJ
8.) ∆H = −590 kJ
an atom in its ground state absorbs a single photon of light and then relaxes back to the ground state by emitting an infrared photon (1,200 nm) followed by an orange photon (600 nm). what is the wavelength of the photon that was absorbed initially
Wavelength of the photon of light and then relaxes back to the ground state by emitting an infrared photon (1,200 nm) followed by an orange photon (600 nm) that was absorbed initially is 400nm
Wavelength of the photon that was absorbed initially can be calculated as follows:
Photon's energy is inversely related to its wavelength.
E ∝ 1/λA
Given that the energy of the absorbed photon () equals the total energy of the photons released (E₁ +E₂).
Eₐ=E₁ +E₂
the relationship between E and λ,
1 = 1 + 1
λₐ λ₁ λ₂
1 = 1 + 1
λₐ 600x 10⁻⁹ 1200x 10⁻⁹
λₐ = 400nm
Therefore, the wavelength of the absorbed photon is 400 nm.
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calculate the molar solubility of srf2 (ksp = 4.3×10−9) in the following substances.
3.278 x [tex]10^-4[/tex] M is the Molar solubility of [tex]SrF_2[/tex] in 1.0 x[tex]10^-^2[/tex] M [[tex]Sr(NO_3)_2[/tex]]
what is molar solubility?The solubility of a substance is measured by the number of moles of the solute that dissolve in one liter of solution, or molar solubility.
Here provided, Ksp = 4.3 × [tex]10^-^9[/tex]
and the concentration of [[tex]Sr(NO_3)_2[/tex]] = [[tex]Sr^2^+[/tex]] = 1.0 x [tex]10^-^2[/tex]M
Ksp for decompositon of [tex]SrF_2[/tex]
Ksp = [tex][Sr^2^+]^2[/tex] [tex][F^-]^2[/tex]
Therefore, 4.3×[tex]10^-^9[/tex] = (1.0 x [tex]10^-^2[/tex] M) x [tex](2x)^2[/tex]
[tex]4x^2[/tex] = ( 4.3×[tex]10^-^9[/tex] ) / (1.0 x [tex]10^-^2[/tex] ) = 4.3 x 10-7
[tex]x^2[/tex] = (4.3 x [tex]10^-^7[/tex]) / 4 = 1.075 x [tex]10^-^7[/tex]
Therefore , x= 3.278 x [tex]10^-^4[/tex] M
So the molar solubility of the solution is 3.278 x [tex]10^-^4[/tex] M
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Complete question:
what is the molar solubility of [tex]SrF_2[/tex] (ksp = 4.3×10−9) in the following substances?
a) 1.0x10^-2M Sr(NO3)2 Ksp=4.3x10^-9
what are non biological methods of metal extraction
Non-biological methods of metal extraction relate to the various techniques used to recover metals from underground deposits. Microorganisms are used in biological processes, commonly referred to as biomining.
What are the three processes for obtaining metals?There are three primary techniques for removing metals from their ore. These include reducing the ore with carbon, electrolyzing the molten ore, and reducing it with a more reactive metal.
Which two forms of solvent extraction are there?There are two different kinds of extraction: solvent extraction, often known as liquid-liquid extraction, and solid-liquid extraction. The separation of chemicals based on their relative solubilities in two separate immiscible liquids or solid matter compounds underlies both methods of extraction.
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Hold the magnesium rebben with the help of pair of tong and bourn it over a flame from the bunsenn burner. this sentence change into past passive
I held the magnesium ribbon over the flame produced by the bunsen burner using a pair of tongs.
a decomposition in species a was monitiered as a function of time. a plot of ln[a] versus time yields a straight line with a negative slope. what is the order of reaction?
Answer is zeroth-order, A straight line with a slope of k represents a first-order reaction when the natural logarithm of the reactant concentration vs time is shown. zeroth-orderis the ideal choice.
The plot of [A] vs time for a zero order reaction, as illustrated, is a straight line with k = - slope of the line. For the initial order. A plot of the concentration of any reactant against time for a zeroth-order reaction is a line with a slope of k. A straight line with a slope of k represents a zeroth-order reaction when the natural logarithm of the reactant concentration vs time is shown.
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a metal crystal is made up of metal ions held together by an ""electron sea"" of valence electrons. why does this configuration make metals good electrical conductors?
The electrical conduction is due to movement of free electron sea.
The valence electrons of metals that are close to one another do not only stay on their own atom, they move freely across the entire metal complex. Like a single water molecule floating freely in the sea, they appear to be floating through an ocean of electrons. It is known as the electron sea model for this reason.
Since each metal atom is free to move around, these atoms develop into positively charged cations. These cations are surrounded by a sea of negatively charged electrons, making them resemble a positively charged island. Metal is a good conductor of electricity because of these free-moving electrons.
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a certain substance has a heat of vaporization of 56.32 kj/mol. at what kelvin temperature will the vapor pressure be 7.00 times higher than it was at 307 k?
Temperature will the vapor pressure be 7.00 times higher than it was at 307 k is 324 K.
Calculation :
Given Data:
Heat of vaporization = 66.64kJ/mol
Final vapor pressure = 4 times of initial vapor pressure
Initial temperature = 307 K
The temperature is calculated by using the Clausius Clapeyron equation:
ln(P1/P2)=ΔHvap/R(1/T2−1/T1)
ln(P1/4P1)=66640Jmol⁻¹/8.314Jmol⁻¹K⁻¹(1/T2−1/307K)
ln(1/4)=8015.4(1/T2−1/307)
−1.38=8015.4/T2(−26.108)
T2=324K
Therefore, the temperature is 324 K.
Thermometers are calibrated at different temperature scales and have historically relied on different reference points and thermometric substances for definition. The most common scales are the Celsius scale with the unit symbol °C (previously called Celsius), the Fahrenheit scale (°F), and the Kelvin scale (K), the latter mostly used for scientific purposes. will be Kelvin is one of the seven basic units of the International System of Units (SI).
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arrange this isoelectronic series in order of decreasing radius: f−, o2−, mg2+, na+.
The arrangement of this isoelectronic series in order of decreasing radius will be as O⁻², F⁻, Na⁺, Mg⁺²
The total number of electrons in each of these elements is 10, although the number of protons in each differs.
O⁻² = 8 protons
F⁻ = 9 protons
Na⁺ = 11 protons
Mg⁺² = 12 protons
Therefore, we can observe that the highest amount of protons in Mg⁺² are attracting the same quantity of electrons, and as a result, this ion has the shortest radius. (since there is a strong attraction force, the radius decreases).
O⁻² has the biggest radius because the fewest number of protons attract the same number of electrons.
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Arrange the amino acids coded for in the translation portion of the interactive in the correct order, starting with the first amino acid at the top.a. leucine b. histidine c. glycine d. methionine
The correct order for the amino acids is:
d. methionine
a. leucine
b. histidine
c. glycine
This order is determined by the sequence of nucleotides in the mRNA molecule, which is transcribed from the DNA template. The sequence of nucleotides in the mRNA molecule determines the sequence of amino acids in the protein that is synthesized during translation. The process of translation begins with the recruitment of a ribosome to the mRNA molecule, and the addition of a special amino acid called methionine to the growing protein chain. The ribosome then moves along the mRNA molecule, adding one amino acid at a time to the growing protein chain, in a sequence determined by the sequence of nucleotides in the mRNA molecule. In this case, the first amino acid added to the protein chain is methionine, followed by leucine, histidine, and glycine.
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The correct order for the amino acids is:
d. methionine
a. leucine
b. histidine
c. glycine
This order is determined by the sequence of nucleotides in the mRNA molecule, which is transcribed from the DNA template. The sequence of nucleotides in the mRNA molecule determines the sequence of amino acids in the protein that is synthesized during translation. The process of translation begins with the recruitment of a ribosome to the mRNA molecule, and the addition of a special amino acid called methionine to the growing protein chain. The ribosome then moves along the mRNA molecule, adding one amino acid at a time to the growing protein chain, in a sequence determined by the sequence of nucleotides in the mRNA molecule. In this case, the first amino acid added to the protein chain is methionine, followed by leucine, histidine, and glycine.
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what is the molar volume of ch4 gas under the conditions of temperature and pressure where its density is 0.674 g/l?
23.79 L/mol is the molar volume of ch4 gas under the conditions of temperature and pressure where its density is 0.674 g/l
molar mass of CH4= 16.04g/ ml
density of CH4 = 0.674 g/l
so molar volume of CH4= molar mass/ density
molar volume of CH4= 23.79L/mol
A substance's (chemical element or chemical compound) molar volume, denoted by the symbol Vm, is the volume occupied by one mole of that material at a specific temperature and pressure. It is determined by dividing the molar mass (M) by the mass density (). The definition of standard temperature and pressure (STP) is 0oC (273.15K) and 1atm pressure. The volume of one mole of a gas at STP is known as the molar volume of a gas.
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FILL IN THE BLANK. in a mixture of 5 ml water, 10 ml alcohol, and 50 ml acetone the solvent(s) is(are) ________.
The solvent here is acetone.
When we mix two miscible liquids, the one with the largest amount will act as the solvent. Here water, alcohol, acetone are miscible liquids. That is all three are soluble in each other. In such cases the one with the maximum quantity will be the solvent.
So, since acetone is in largest quantity, that is, 50ml, it will act as the solvent.
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morphine is a weak base. a 0.11m solution of morphine has a ph of 10.4. what is the base dissociation constant for morphine
With repeated usage, morphine may develop a habit. Follow the morphine instructions precisely. Do not take it in larger amounts, more frequently, or otherwise differently than prescribed by your doctor.
Discuss your pain management objectives, course of treatment, and additional pain management options with your healthcare practitioner while you are taking morphine . Inform your doctor if you or any family members regularly use significant amounts of alcohol, take street drugs, abuse prescription medicines excessively, experience overdosing, or currently suffer from depression or another mental disorder. If you now use or formerly used morphine, there is a higher chance that you may abuse it.
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what is the amount of charge on a calcium ion if its neutral atom has lost two valence electrons?
A calcium ion will have a positive charge when it loses an electron. If it loses 2 electrons, the calcium ion will have 18 electrons and a 2+ charge.
In order to meet its octet rule on what would eventually become the new valence shell, the calcium atom, which currently has two valence electrons, must lose both of them. Consequently, it has a 2+ charge. Calcium contains 20 protons but only 18 electrons since it lost two electrons. As a result, calcium has a charge of 2+, making it a positive ion. With 20 protons and 20 electrons, a neutral calcium atom easily loses two electrons. A cation with 20 protons, 18 electrons, and a 2+ charge is the consequence of this. It is represented by the formula Ca2+ and has the same number of electrons as atoms of argon, the previous noble gas.
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give the structure of the principal organic product formed by the free-radical bromination of methylcyclopentane.
structure of the principal organic product formed by the free-radical bromination of methylcyclopentane. is the major product is formed by the substitution of Br radical on tertiry carbon.
In the presence of UV light, 1-Methylcyclopentane reacts with Bromine molecules. This type of reaction is known as a free radical reaction. Bromine will first become a bromine free radical and then attack the desired carbon to produce the desired product. Organic products are grown in an agricultural system that does not use chemical fertilisers or pesticides and takes an environmentally and socially responsible approach. Atoms or groups of atoms with a single unpaired electron are referred to as free radicals. These radicals are involved in a free radical substitution reaction. When a bond splits evenly, each atom receives one of the two electrons, and free radicals form. This is referred to as homolytic fission.
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EM radiation emission is from what part of the atom?
Any time a charged particle, like an electron, modifies its velocity, electromagnetic radiation is created that is every time it accelerates or slows down. The charged particle loses the energy of the electromagnetic radiation that is subsequently created as a result.When an atom absorbs energy, it emits electromagnetic radiation.
One or more electrons in the atom move to a different location as a result of the energy being absorbed. An electromagnetic wave is created when the electron reposition itself.Atoms may absorb energy in a variety of ways. Electrical energy can be used as one method of atom excitation. Neon signs display this for you. The neon atoms will become excited or gain energy when we run electricity through the neon tubes.
In this state, the electrons in these atoms are very energetic. The electrons will return to their low energy state and emit radiation that we see as light since they don't enjoy being in the high energy state.
Which is the correct order for coordinates?a. Either way
b. Latitude, equator
c. Latitude, longitude
d. Longitude, latitude
Answer:
c
Explanation:latitude,longitude
why does fractional distillation of 2 components more easily accomplished if they differ by 20 degrees
The separation of the two component become more easy if the differ by at least because fractional distillation is a boiling point based separation method.
The fractional distillation is a process in which two liquid are separated from a mixture by using the difference in their boiling point as a main characteristic.
If the temperature of the two liquid for the two components is differing by at least 20 degree then fractional distillation can be accomplished more easily because it will become easier for us to separate the two components.
Because one of the component can be separated much earlier without wearing about the evaporation of the Other compound. The big difference in the boiling point makes the process of separation much easier.
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What is the difference between Le Chatelier's principle and the common ion effect? How do they predict the effect of stress or disturbance on the equilibrium position of a chemical reaction?
Answer:b
Explanation:
aqueous sodium bicarbonate was used to wash the crude n-butyl bromide. what was the purpose of this wash? give equations.
Aqueous sodium bicarbonate was used to wash the crude n-butyl bromide, the purpose of this wash is to completely neutralize the product or to remove the excess acid present in the product.
The reaction between the acid and sodium bicarbonate produces carbonic acid, which rapidly dissociates into carbon dioxide gas and water.
Now, in this reaction, we still have trace amounts of HBr in the product, therefore in order to neutralize these traces, we wash the solution with sodium bicarbonate, which results in the formation of sodium bromide and carbonic acid as described below:
HBr + Na₂CO₃ → NaBr + Na₂CO₃
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the specific heat of solid platinum 0.133 J/g c How much heat is absorbed when a 10 gram piece of platinum is warmed from 100 c to 150 c
The heat is absorbed when a 10 gram piece of platinum is warmed from 100 c to 150 c is 66.5 J
How to calculate heat is absorbed when a 10 gram piece of platinum is warmed from 100 c to 150 c?Energy is a sort of heat. Heat changes the condition of a substance when it is absorbed by it by weakening and rupturing the inter-particle bonds (solid to liquid for example). A phase change brought on by heat is NOT enough to raise the temperature. A reaction that absorbs heat is called endothermic.
The bulk of the body affects how much heat is absorbed. The bulk of the body directly affects how much heat energy is absorbed. where M is the body's mass and Q is the quantity of heat absorbed.
Using the equation H=cpmT and the water specific heat, the amount of heat absorbed is computed.
Given,
heat of slid platinum = 0.133
150 -100=50
heat absorbed = 0.133*10*50
= 66.5 J
Therefore , The heat is absorbed when a 10 gram piece of platinum is warmed from 100 c to 150 c is 66.5 J
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When 50.0 g of water decompose, how many grams of hydrogen are produced?
This question is driving me mad-
44.44 grams of hydrogen are produced in this equation
This can be shown as :
Let's start by balancing the equation.
We can see that, as written, we have one oxygen coming in, but two (O2) on the product side.
H2O → H2 + O2Let's try making it 2 H2O and see what happens:
2H2O → H2 + O2That took care of the O's, but now we have two extra H's coming in. So let's add a "2" to the H2 on the product side:
2H2O → 2H2 + O2Now it is balanced. 4 hydrogens and 2 oxygens coming in, and 4 hydrogens and 2 oxygens going out.
Now we can calculate the amounts of both products.
We need to find the percent by mass of both hydrogen and oxygen in the water.
Since the formula for water is H2O, take the masses off of the periodic table: 2x1g for hydrogen (because there are 2 H in the formula); 1x 16g for oxygen (because there is 1 O in the formula), added together for a total of 18g.
Hydrogen’s Percentage is :
2g/18g x 50 = 5.56Oxygen's Percentage is :
16g/18g x 50 = 44.44Thus, Out of 50g of water, that makes 44.4g of Oxygen and 5.56 g of Hydrogen.
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laminates are question 24 options: b. created by gluing patches of high quality wood over blemishes and knots to hide them so they don't show in the finished casket c. particles of wood bonded together with waterproof glue d. used to manufacture solid wood caskets. a. made by uniting superimposed sheets of different materials
Laminates are the made by uniting superimposed sheets of different materials.
The laminates are caskets made by the uniting superimposed sheets of the different materials . the sheets of the laminate are made up by the bonding together of the two or the more layers of the materials. laminates are the decorative products. the laminates are used in the furniture , for the wall paneling. it is made by high or the low pressure of the laminate. laminates is used in the multilayer of the flooring product. laminates imitate the real wood appearance.
Thus, caskets made of uniting superimposed of layer of the different material are called as the laminates.
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gallium-65, a radioactive isotope of gallium that undergoes first order decay has a half-life of 15.2 min. how long would it take for 7/8 of a sample of this isotope to decay?
The answer is 30.4 min.
Solution:
For 7/8 decay
It will have 2 half-lives. In first half life it will remain 1/6 then after second half life it will remain 1/8 means decay = 1-8/8 = 7/8
So total time
= 15.2 * 2 = 30.4 min
A radioisotope is a radioactive isotope of an element. They can also be defined as unstable combinations of neutrons and protons, or atoms containing excess energy within the nucleus. For example, radioactive isotopes of radium, thorium, and uranium occur naturally in rocks and soils.
Uranium and Thorium are also present in water in trace amounts. Radon, produced by the radioactive decay of radium, is present in the air. An unstable form of a chemical element emits radiation as it decays and becomes more stable. Radioactive isotopes can occur naturally or can be created in a laboratory.
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