Base your answers to questions 1 and 2 on
the diagram below, which represents a solid material
of uniform composition.
2.0 cm
Density = 2.7 g/cm³
-3.0 cm-
A) 32 g
4.4 g
L
2.0 cm-
W₂
1. The mass of this piece of material is approximately
B 0.23 g
9.3 g

The volume of a pond being studied for the effects of acid rain that is 35 kiloliters (kL) if converted in microliters is found to be 3.5 x [tex]10^{10}[/tex]

Acid rain is the actual form of precipitation that includes acidic components like nitric or sulfuric acid that fall from the atmosphere on the earth's surface.

Acid rain refers to rain or any other type of precipitation that is unusually acidic, that is, contains large amounts of hydrogen ions.

The acid rains are considered harmful as they corrode and destroy these infrastructures, and plants and cause irritation to the organisms.

The volume of a pond that is being studied for the effects of acid rain is 35 kiloliters (kL).

There are a total of 1,000 liters (L) in 1 kL and 1 x [tex]10^6\\[/tex] microliters (mL) in 1 L.

Then 35 kL (1,000 L/ 1kL) (1 x 10^6 microliters / 1 L) = 3.5 x [tex]10^{10}[/tex] microliters

The volume of this pond calculated in microliters is 3.5 x [tex]10^{10}[/tex] microliters.

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The sun is made up of hydrogen and helium because these two gases are responsible for fusion reaction which generate light and heat energy.

Scientists use the device of spectroscopy in order to determine the composition of the Sun. The Sun is made up of light elements such as hydrogen and helium. It is composed of 74% hydrogen atom and 25% helium. In the core of the sun, gravitational forces produce huge pressure and temperatures. The temperature of the sun in this layer is 27 million degrees Fahrenheit that is equals to 15 million degrees Celsius. Hydrogen atoms are fuse together creating helium atom. This process is known as nuclear fusion reaction.

So we can conclude that the sun is made up of hydrogen and helium so that the fusion reaction is initiated.

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The student made a mistake in Step 2 by calculating the moles of magnesium chloride. The grams should be measured to make the solution.

In preparing a solution of a solid, we would need to follow a number of steps so that the desired concentration of the solution is what we would end up having.

The steps to be followed are;

1)  Gather a graduated cylinder, balance, and stirring rod.

2)  Calculate the mass  of magnesium chloride needed.

3) Add the water to reach 0.5 L of magnesium chloride solution and stir until dissolved.

4)  Label the solution 0.1 M MgCl2.

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Answer:

H3PO4+3NaBr->3HBr+Na3PO4

Explanation:

H3PO4+3NaBr->3HBr+Na3PO4

this equation is balance because, the number of

H atom and Na atom is equal to right hand side reaction and Left hand side reaction.

The noble gases have similar chemical properties because they have the same number of valence electrons.

The noble gases are the gases that are found in the last group of the periodic table. These are the gases that have been said to be unreactive under normal conditions. Thee have been found to react only under stringent conditions as we can see.

Given the fact that the octet rule states that an element that contains eight electrons in its outermost shell would be unreactive and all the noble gases have complete octets hence the noble gases are unreactive.

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In A, two types of molecules are generated. Two monosaccharides are bonded together by a condensation reaction in which glycoside bonds form between the monosaccharides and release the water molecule. In a specific, A reaction, fructose, and glucose molecules combine to generate sucrose (disaccharide).

In the case of the B reaction, two distinct amino acids (monomers) combine to generate a third molecule, a dipeptide; the bond formed between these two molecules is known as a peptide bond (amine group of first amino and cool group of second amino acid). This reaction is also condensation and results in the formation of water molecules. The fact that both create water molecules and dimers from two monomers is shared in this region.

Monosaccharides (from Greek monos: single, saccharin: sugar) are the most fundamental molecules (monomers) from which all carbohydrates are formed.

They are typically water-soluble white crystalline solids. Despite their name, only a few monosaccharides have a sweet flavor (sugars).

Sucrose, the most common table sugar, is a disaccharide made up of one molecule of each of the two monosaccharides D-glucose and D-fructose.

Monosaccharides include glucose (dextrose), fructose (levulose), and galactose.

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Answer:

multiply by Avogadro's number:

3.07x6.002x10^23

=0.2556054185018347moles

Explanation:

The single replacement reaction is that in which one element is substituted for another element but in the same compound.

A single replacement reaction is also known as a single displacement reaction. The single replacement reaction is defined as the reaction in which one element is substituted for another element in a compound. In the beginning, the starting element is always will be pure metal, such as pure zinc metal.

Identification:

We can determine the single replacement reaction when one element replaces another element in the same compound. This kind of reaction is represented by: A + BC → B + AC.

Determination:

The single replacement reaction can be determined when a less reactive element can be replaced by a more reactive element in a compound.

So we can conclude that one element is replaced by another element in the single replacement reaction.

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Answer:

hi there, are u okay . what do u need help for

Answer:

Animal cells each have a centrosome and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts and other specialized plastids, and a large central vacuole, whereas animal cells do not

Explanation:

The element's Atomic number , which has 5 protons, 6 neutrons, and 2 electrons (the atomic number is the number of protons) =  5

the number assigned to a chemical element according to its atomic number in the periodic system, which places the elements in ascending order of the number of protons in their nuclei. As a result, the atomic number is also the number of protons, which in a neutral atom is always equal to the amount of electrons.

Protons and neutrons are added to determine an element's mass number. The only number that may change while maintaining the identity of an element is the number of neutrons for that element (because the atomic number is the number of protons).

Mass number = protons + neutrons

Given:

5 protons,

6 neutrons

2 electrons

Atomic number = ?

We know that the Mass number = protons + neutrons:

Mass number = protons + neutrons

Mass number = 5 + 6:

Mass number = 11

The element's Atomic number , which has 5 protons, 6 neutrons, and 2 electrons (the atomic number is the number of protons) =  5.

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The volume of gas in the tank is determined as 1.78 L.

The volume of gas in the tank is calculated by applying idle gas law as follows;

PV = nRT

where;

n = reacting mass / molar mass

n = (300 g) / (3 x 16 g)

n = (300 g) / (48 g/mol)

n = 6.25 moles

The volume of the gas is calculated as follows;

V = nRT/P

V = (6.25 x 8.314 x 214.25)/(6250)

V = 1.78 L

Thus, the volume of ideal gas increases with increase in temperature.

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The concentration of the diluted solution of the food dye yellow 6 is found to be 10.0ppm.

A solution's concentration is an indicator of how much solute has been dissolved in a certain volume of solvent or solution. A solution with a significant concentration of dissolved solute is one that is concentrated. When there is just a minimal amount of dissolved solute in a solution, it is said to be diluted.

Parts per million (ppm) measurements of concentration indicate how many solute particles there are in every million solution particles.

Given:

Initial concentration, C1 = 20.0ppm

Initial Volume, V1 = 5mL

Final Volume, V2 = 10mL

To find:

Final concentration, C2 = ?

Formula:

C1V1 = C2V2

Calculations:

20 x 5 = C2 x 10

C2 = 20 x 5 / 10

C2 = 10.0ppm

Result:

The diluted solution of the food dye yellow 6 is found to have a concentration of 10.0ppm.

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The oxygen molecule needs to cross three phospholipid bilayers.

The process of ATP synthesis in which electrons are transported from NADH or FADH2 to oxygen is known as oxidative phosphorylation. The process of cellular respiration ends at this stage. Chemiosmosis and the electron transport chain are two interrelated processes that make up oxidative phosphorylation. As electrons move from one molecule to the next in the electron transport chain, energy is released throughout the process, which is then utilized to create an electrochemical gradient. However, during chemiosmosis, ATP is produced using the energy stored in the gradient.

Oxygen is found at the end of the electron transport chain, where it takes electrons and picks up protons to make water.

Therefore, it follows that a molecule of oxygen must travel through three phospholipid bilayers, which are represented by the cell membrane and the external and internal membranes of the mitochondria, in order for it to go through the electron transport chain.

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Pancakes are warmth due to conduction. When there is conduction in a system, there is change in temperature and energy.

When a system absorbs or loses warmth, the common kinetic energy of the molecules will exchange. Consequently, warmth transfer effects in a change inside the machine's temperature so long as the machine is not undergoing a segment trade.

The change within the inner power of a gadget is the sum of the heat transferred and the paintings carried out. The heat glide is same to the exchange within the inner energy of the device plus the work performed.

When the temperature of an object will increase, the average kinetic energy of its particles increases. When the average kinetic power of its debris will increase, the object's thermal energy increases. consequently, the thermal energy of an object will increase as its temperature increases.

Inner strength is the whole kinetic energy and capacity power of all the particles, atoms and molecules that make up a system. Heating adjustments the energy stored within the system by growing the strength of the debris that make up the system.

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The Mass of water need to raise the bath to body temp is mathematically given as

M=4.76kg

This is further explained below.

Generally, The movement of kinetic energy from one media or item to another, or from an energy source to a medium or object, is what we understand to be the phenomenon of heat.

Radiation, conduction, and convection are the three different ways that this kind of energy transfer may take place.

In conclusion, Let us assume that M is the mass of water that has reached a temperature of 100 degrees Celsius.

The heat that is obtained by cold water is equal to the heat that is lost by boiling water.

Final temperature =37C

25x(37-25)=Mx(100-37)

M=300/63

M=4.76kg

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CQ

How much boiling water would you need to raise the bath to body temperature (about 37c )? Assume that no heat is transferred to the surrounding environment. Imagine that your water heater has broken, but you want to take a bath. You fill your bathtub with 25kg of room-temperature water (about 25c ). You figure that you can boil water on the stove and pour it into the bath to raise the temperature

The true statements about the electron sea model is;

The term bonding has to do with the situation in which there is a combination of the atoms that come from two or more elements. Now let us note that formation of a bond means that the properties of the elements would cease to be individually observed once a bond has been formed.

Having said this, let us talk about the metallic bond. The metallic bond is the kind of bond that occur between the positive ions of the metal and the electron cloud or sea that have left the ions. It then follows that the bond is formed by the electrostatic interference that occurs between the electron sea and the positive ions.

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An isotope of neon with formula 20/10 Ne will possess 10 protons, 10 neutrons and 8 valence electrons i.e. 10, 10, 8.

Isotopes are two or more forms of an element where the atoms have the same number of protons, but a different number of neutrons within their nuclei. Thus, isotopes have the same atomic number but a different mass number.

According to this question, an isotope of neon, an inert gas, has a formula of 20/10 Ne. The mass number of this isotope is 20 while the atomic number is 10.

This means that the number of neutrons is 20 - 10 = 10 while the number of protons is 10. Neon like all other noble gas has a filled shell and a valence electron of 8.

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Given that the disturbance travels along the length of the rope, the farther I move my arm, the larger the size of the wave in the rope.

A wave is a disturbance along a medium which transfers energy. We know that a wave could be classified based on the nature of the propagation of  the wave as the transverse or the longitudinal waves.

The wave that is created along a string is a longitudinal wave. The direction of the wave motion is the same as that of the disturbance. It is very easy to create a wave on a string when the sting is moved vigorously and the wave is found to travel quickly across the length of the rope is we can see from the image that I have attached to make the concept and the context of the answer a bit more clearer to the student in this case.

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Answer: 0.000806

Explanation: Set up the equilibrium table, find x and from there find your Kc=(Co)^2*(O2)/(O2)^2

If the isotopes of Cadmium were truly isotopes then their atomic number is the same but the atomic mass is different from one another.

An isotope is a species of atoms that have the same atomic number as well as the position of that atom in the periodic table. They are identical in chemical behavior but the physical properties of that atom due to different atomic masses. The atoms belong to the same element, having same atomic number which is expressed as Z but having different mass number A, this is called isotope. For example, Carbon atom has three isotopes i.e. carbon-12, carbon-13 and carbon-14. These elements of carbon having mass numbers 12, 13 and 14 respectively.

So we can conclude that the isotopes of Cadmium have same atomic number but different mass number.

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Answer:

The tobacco industry has for many years used ammonia as a relatively innocuous additive to augment certain flavors, to economize on costs by expanding or “puffing” the cured leaf, to denicotinize (reduce the amount of nicotine in) tobacco, and even to reduce some of the carcinogens in tobacco smoke.

Answer:

a rise in tempature

Explanation:

look it up

Law of conservation of mass states that in a closed system, the mass would be the same.

In a reaction, the compounds’ undergoing reaction is called reactants and the resultant of the reaction is called products.

Word equation uses words instead of chemical formulas. The skeleton equations use chemical formulas without mentioning the state of the compounds or the concentration. In balanced chemical reaction, mass and charge would be balanced.

Law of conservation of mass is similar to law of conservation of energy. It says that in a closed system, the mass would remain the same as mass is neither created nor destroyed.

[tex]H_{2}O[/tex]  →  [tex]H_{2} + O_{2}[/tex]

In this reaction, [tex]H_{2}O[/tex] is the reactant which has a mass of 18. H₂ and O₂ are the products with mass of 2 and 16 respectively.

In word equations, equation 1 can be written as

Water → Hydrogen + Water

In skeleton equation,

H₂0 → H₂ + O₂

In balanced chemical reaction,

2 H₂0 → 2 H₂ + O₂

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The wavelength of a yellow light with a frequency of 5.2 x 10¹4 Hz is 6 × 10⁻⁷.

A waveform signal that is carried in space or down a wire has a wavelength, which is the separation between two identical places (adjacent crests) in the consecutive cycles. This length is typically defined in wireless systems in meters (m), centimetres (cm), or millimetres (mm) (mm).

When electromagnetic radiation such as radio waves, light waves, or infrared (heat) waves travel through space, they leave behind distinctive patterns. Each wave has a distinct size and shape. Wavelength is the separation between peaks (high points).

By measuring the distance between any two identical locations on adjacent waves, the wavelength can always be found. When a longitudinal wave is present, the distance between one compression and the next is measured to determine the wavelength.

γ = λf

λ = γ / f

= 3 × 10 ⁸ / 5 × 10 ⁴

= 0.6 × 10⁻⁶

λ = 6 × 10 ⁻⁷

Thus, The wavelength of a yellow light with a frequency of 5.2 x 10¹4 Hz is 6 × 10⁻⁷.

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Answer:

5.8 x 10^-7

Put in this answer and got it correct

The activity of the enzyme used for the synthesis of oxaloacetate from pyruvate and carbon dioxide is increased by acetyl-coenzyme A which acts as an allosteric activator.

After glycolysis, pyruvate is changed over into acetyl-coenzyme A in arrange to enter the citric corrosive cycle.

Oxaloacetate synthesis from pyruvate is a vital anaplerotic response that makes oxaloacetate from pyruvate. The protein could be a mitochondrial protein containing a biotin prosthetic gather, requiring magnesium or manganese and acetyl-coenzyme A.

Pyruvate carboxylase could be a biotin-containing enzyme that catalyzes the arrangement of oxaloacetate within the nearness of an allosteric activator, acetyl-coenzyme A, from pyruvate.

Furthermore, small pyruvate is decarboxylated to acetyl-coenzyme A by the pyruvate dehydrogenase complex. Or maybe, pyruvate is changed over to the 4-carbon oxaloacetate by pyruvate carboxylase.

This switch happens fundamentally in reaction to an increment in free fatty acids oxidation. Free fatty acids from adipocytes are promptly oxidized within the liver.

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An  enzyme do not change delta G.

1)A reaction that releases free energy is known as an exergonic reaction. This type of reaction can happen spontaneously, unaffected by external forces, because it releases energy rather than absorbing it.

2) Exergonic reactions are those in chemistry where the change in free energy is negative. A system's total amount of available energy is measured by its free energy; negative changes indicate that energy has been released, whilst positive changes indicate that energy has been stored.

Enzyme only changes activation energy .Enzyme do not change delta G so, this hypothesis does not fit with what is know about the reaction.  

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Answer:

Neutral, no charge

Explanation:

Proton is positive, while electron is negative.

Sum of both is 1 - 1 = 0

so the atom is neutral, which means it doesn't carry any charge.

Answer: both are a way of heat

Explanation: see you can see the there is a lot of heat in the oven but like the sun thermal energy is so its heat but it was made naturally

The mass number of the third isotope, given the data from the question is 34

The mass number of the third isotope can be obtained as illustrated below:

Relative atomic mass = [(Mass of 1st × Abundance of 1st) / 100] + [(Mass of 2nd × Abundance of 2nd) / 100] + [(Mass of 3rd × Abundance of 3rd) / 100]

32.133 = [(32 × 92.4) / 100] + [(33 × 1.9) / 100] + [(Mass of 3rd × 5.7) / 100]

32.133 = 29.568 + 0.627 + (Mass of 3rd × 0.057)

32.133 = 30.195 + (Mass of 3rd × 0.057)

Collect like term

32.133 - 30.195 = Mass of 3rd × 0.057

1.938 = Mass of 3rd × 0.057

Divide both sides by 0.057

Mass of 3rd = 1.938 / 0.057

Mass of 3rd = 34

Thus, we can conclude that the mass of the 3rd isotope is 34

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Missing part:

See attached photo