The substance is a gas because its solubility decreases with temperature.
What is a solution?A solution is formed when a solute is dissolved in a solvent. We know that the solubility has to do with how much of the solute in mass or moles that is able to be dissolved in the solvent at a given temperature. This shows that the temperature is very important when we are looking at solubility.
The solubility of a gas gets lesser and lesser as the temperature of the system increases and this is what we are seeing in the data that is shown in the question above.
Learn more about solubility:https://brainly.com/question/28170449
#SPJ1
does anyone know how to answer this question?
What is the final temperature of a 300.0 gram glass of water if it is placed
in the microwave at 22.0°C and it absorbs 5000.0 joules of energy?
The final temperature of a 300.0-gram glass of water if it is placed
in the microwave at 22.0°C and it absorbs 5000.0 joules of energy is
3.987°C.
What does ' amount of heat gained or lost " means?The equation q = MCT, where m is the mass of the sample, c is the specific heat, and T is the temperature change, can be used to determine the amount of heat that a sample (q) gains or loses. q = mct. liquid mass, m (so this would be in grams) t = temperature change. For example, water's particular constant, C, is 4.2 J g-1 K-1, therefore you just enter that value into the formula in the exam to get the energy of water.
Calculating heat energy involves using the equation Q = MCT. Mass, specific heat, and temperature change are all components of heat energy. Q = MCT. where Q is the heat energy, M is the material's mass, C is the specific heat, and T is the temperature change.
q = m CΔT
5000 J = 300 g × 4.18 J × ΔT
ΔT = 5000/1254
= 3.9872
= 3.987°C.
To know more about the amount of heat gained or lost ,visit:
https://brainly.com/question/13320482
#SPJ9
If the mass of the ice to the cup increases the total energy in the cup will what
The mass of the ice to the cup increases The total energy in the cup will - The mass remains unchanged.
What is mass?
The total amount of matter in a physical body is defined as its mass. In the presence of a net force, it also serves as a gauge for the body's inertia, or resistance to acceleration (change in velocity). The gravitational pull of an object on other bodies is also influenced by its mass. The kilogramme is the SI's primary mass unit (kg). Even though weight is frequently measured with a spring scale rather than a balancing scale and directly compared to known masses, mass and weight are not the same thing in physics. Because of the lower gravity on the Moon, an object would weigh less while maintaining the same mass as it does on Earth.
The latent heat of fusion is absorbed by the mass. This is required for phase changes.
Despite absorbing heat from the environment, the temperature stays the same as long as there is still some ice present. The warmth that is absorbed is used as latent heat rather than sensible heat.
The mass remains unchanged.
Learn more about mass
https://brainly.com/question/26150306
#SPJ10
Tissues are composed of groups of:
Which metal is likely to be more reactive? Mg or Rb
please explain why
Answer: Rb is more reactive
Explanation: The reason rubidium is more reactive is because it loses its valence electron more readily than Mg does.
Answer:
Rb
Explanation:
Mg has 2 valence electrons to loose vs Rb has 1 valence electron to loose.
Rb wins because losing 1 electron is easier than having to lose 2, which means Rb is more reactive ("ready" to react).
How do I round 999999 to 3 sig figs
The number of significant figures in a result simply refers to the number of figures that are known with certainty. Here,
1000000 is 999999 rounded to three significant figures.
What is the best way to round a number to three significant figures?Significant figures are digits of value that have meaning in terms of measurement resolution. In chemistry, they are also known as significant figures. All of the experimental measurements are subject to some degree of uncertainty.The number of significant figures in a result is simply the number of figures that are reliably known.A number is rounded to three significant figures in the same way that it is rounded to three decimal places. For three digits, we start counting from the first non-zero digit. The final digit is then rounded. We use zeros to fill in any remaining spaces to the right of the decimal point.To learn more about significant figures refer to :
https://brainly.com/question/30169
#SPJ13
Which separation method is used in making coffee at home
Answer:
Filtration eg coffee maker
A 100.0-mL aliquot of 0.200 M aqueous potassium hydroxide is mixed with 100.0 mL of 0.200 M
aqueous magnesium nitrate.
(a) Write a balanced chemical equation for any reaction that occurs.
(b) What precipitate forms?
(c) What mass of precipitate is produced?
(d) Calculate the concentration of each ion remaining in solution after precipitation is complete.
i mostly need help on the last one
The balanced equation of the reaction is:
2 KOH (aq) + Mg(NO₃)₂ ---> Mg(OH)₂ (s) + 2 KNO₃ (aq)The precipitate formed is magnesium hydroxide.
The mass of precipitate produced is 0.58 g.
The concentration of the ions remaining in the solution are:
[Mg²⁺] = 0.05 M
[NO₃⁻] = 0.1 M
What is the balanced equation of the reaction of aqueous potassium hydroxide and aqueous magnesium nitrate?The balanced equation of the reaction of aqueous potassium hydroxide and aqueous magnesium nitrate is given below:
2 KOH (aq) + Mg(NO₃)₂ ---> Mg(OH)₂ (s) + 2 KNO₃ (aq)
Magnesium hydroxide is obtained as a precipitate in the reaction above.
The mass of precipitate produced is calculated as follows:
moles of KOH (aq) reacting = 0.200 * 100 / 1000 = 0.02 moles
moles of Mg(NO₃)₂ reacting = 0.2 * 100 / 1000 = 0.02 moles
From the equation of reaction, KOH is the limiting reagent.
Moles of precipitate formed = 0.02 / 2 = 0.01 moles
molar mass of Mg(OH)₂ (s) = 58 g/mol
Mass of precipitate formed = 0.01 * 58
Mass of precipitate formed = 0.58 g
Moles of Mg(NO₃)₂ remaining = 0.02 - 0.01 = 0.01 moles
total volume of solution = 200 mL or 0.2 L
The concentration of each ion remaining in the solution is as follows:
[Mg²⁺] = 0.01 / 0.2 = 0.05 M
[NO₃⁻] = 0.01 * 2 / 0.2 = 0.1 M
Learn more about concentration at: https://brainly.com/question/23437000
#SPJ1
-) Potassium is also in Group 1 of the periodic table. Potassium reacts with water in a similar
way to lithium. Write down two differences you would see between the reactions of
potassium and lithium with water.
Lithium react slowly with water while potassium react violently with water. potassium caught fire while lithium does not caught fire.
What is chemical reaction?Chemical reaction is defined as a procedure in which one or more compounds, known as reactants, are changed into one or more distinct substances, known as products.
It can also be defined as a process in which two or more molecules collide with the proper orientation and enough force to produce a new product.
There are mainly five types of reaction.
Synthesis reactionAcid base reactionRedox reactionDecomposition reactionPrecipitation reactionThus, Lithium react slowly with water while potassium react violently with water. potassium caught fire while lithium does not caught fire.
To learn more about chemical reaction, refer to the link below:
https://brainly.com/question/3461108
#SPJ1
problem b. a silicon crystal is to be grown using the czochralski method. the ingot of crystalline silicon is to contain 3x1015 dopant atoms/cm3. (show your work.) a. if kd
A small seed crystal is placed into a melt in a crucible and pulled upward to form a single crystal using the Czochralski (CZ) method of crystal formation. The approach was created in 1916 by a Polish scientist by the name of Jan Czochralski.
How is silicon crystallized using the Czochralski CZ method?
The Czochralski method is to be used to create a silicon crystal as the solution to problem B. The crystalline silicon ingot must have 3x1015 dopant atoms per cubic centimeter. (Indicate your work.) a. if kd
To learn more about Czochralski refer to:
https://brainly.com/question/28303807
#SPJ9
BRAINLIEST LOTS OF POINTS | One molecule of bromine (Br2) and two molecules of potassium chloride (KCl) combine in a reaction. How many atoms are in the products?
First, write out the equation.
Balance the equation.
Count atoms in the product.
What is the answer?
Answer:
6 atoms
Explanation:
Br2 + 2KCl = 2KBr + Cl2
2KBr = 4 atoms
Cl2 = 2 atoms
total 6 atoms
Chemical reaction between bromine and potassium chloride is 2 KCl +Br₂[tex]\rightarrow[/tex] 2 KBr +Cl₂. There are 6 atoms in the product .
What is a chemical reaction?Chemical reactions are defined as reactions which occur when a substance combines with another substance to form a new substance.Alternatively, when a substance breaks down or decomposes to give new substances it is also considered to be a chemical reaction.
There are several characteristics of chemical reactions like change in color, change in state , change in odor and change in composition . During chemical reaction there is also formation of precipitate an insoluble mass of substance or even evolution of gases.
There are four types of chemical reactions:
1) combination reaction
2)decomposition reaction
3) single displacement reaction
4) double displacement reaction
During chemical reactions atoms are rearranged and reactions are accompanied by an energy change as new substances are formed.
Learn more about chemical reactions,here:
https://brainly.com/question/3461108
#SPJ5
What is the force that holds a pencil down against a desk?
Responses
friction
momentum
gravity
normal
Answer:
Gravity
Explanation:
Gravity is the force that attracts a body towards the centre of the earth, or towards any other physical body having mass.
Answer:
Gravity
Explanation:
Gravity is the force that attracts a person or an object to weigh, or pull. I hope this helped :)
Balance the following the chemical equation: _ Na2O + _ CaBr2 → _ NaBr + _ CaO
The balanced form of the chemical equation is as follows:
Na₂O + CaBr₂ → 2NaBr + CaO
What is a balanced chemical equation?A chemical equation is a symbolic representation of a chemical reaction where reactants are represented on the left, and products on the right.
A chemical equation is said to be balanced when the number of atoms of each element on both sides of the equation is the same.
To balance a chemical equation, we make use of coefficients, which are numbers placed in front of the elements to make the atoms equal.
According to this question, sodium oxide reacts with calcium bromide as follows:
Na₂O + CaBr₂ → 2NaBr + CaO
The above equation is said to balanced because the following atoms are equal on both sides of the equation:
2 atoms of sodium2 atoms of bromine1 atom of calcium1 atom of oxygenLearn more about balanced chemical equation at: https://brainly.com/question/28294176
#SPJ1
!PLS URGENT 50 POINTS! Determine the pressure change when a constant volume of gas at 1.5 atm is heated from 18 °C to 32 °C.
please help with this need it in 6 hours
1.)in the thermit reaction 2Al + Fe2o3= al2o3 + 2 fe. what is the mass of aluminium powder is needed to react with 8.0g of iron (3) oxide
2.) what mass of magnesium sulphate crystals can be made from14.0g of magnesium carbonate and an excess of dilute sulphuric acid
3.) what mass of calcium oxide is formed when 25g of calcium carbonate is decomposed by heat?
4.) Lead (ii) oxide PbO, reacts with hydrogen to for lead and steam. calculate the mass of lead in formed when 446g of lead (ii) oxide is reduced in this way.
5.) what volume of gas is given off when excess calcium carbonate is added to 50cm cube of 2.0M by hydrochloric acid , if the gas volume is measured at s.t.p.?
1) Mass of aluminum powder is 2.7 g.
2) Mass of magnesium sulfate is 19.9 g.
3) Mass of calcium oxide is 14g.
4) Mass of lead 412.2 g.
1) In the thermite reaction :
2Al + Fe₂O₃ -----> Al₂O₃ + 2Fe
mass of Fe₂O₃ = 8.0 g
molar mass of Fe₂O₃ = 159.6 g/mol
number of moles = mass / molar mass
= 8.0 g / 159.6 g/mol
= 0.050 moles
1 mole of Fe₂O₃ react with 2 mole of Al ,
0.050 Fe₂O₃ moles react with 2 × 0.050 = 0.1moles of Al
number of moles of Al = mass / molar mass
mass of Al = no. of moles × molar mass
= 0.1 mol × 27 g/mol
= 2.7 g
Thus, the mass of aluminum powder is needed to react with 8.0 g of iron (III) oxide is 2.7 g
2) the reaction is :
MgCO₃ + H₂SO₄ -----> MgSO₄ + CO₂ + H₂O
mass of MgCO₃ = 14.0 g
no. of moles of MgCO₃ = mass / molar mass
= 14 g / 84.3 g/mol
= 0.166 moles
1 mole of MgCO₃ produced 1 mole of MgSO₄,
0.166 mole of MgCO₃ produced 0.166 mole of MgSO₄
mass of MgSO₄ = 120.3 g/mol
no. of moles of MgSO₄ = mass / molar mass
mass of MgSO₄ = no. of moles × molar mass
= 0.166 mol × 120.3 g/mol
= 19.9 g
Thus, mass of magnesium sulfate crystals can be made from14.0g of magnesium carbonate and an excess of dilute sulfuric acid is 19.9 g
3) the reaction is :
CaCO₃ -----> CaO + CO₂
mass of calcium carbonate = 25 g
molar mass of CaCO₃ = 100 g/mol
no. of moles of = mass / molar mass
= 25 / 100
= 0.25 mol
0.25 moles of CaCO₃ produced 0.25 moles of CaO
molar mass of CaO = 56 g/mol
mass of CaO = no. of moles × molar mass
= 0.25mol × 56 g/mol
= 14 g
the mass of CaO produced 14 g.
4) PbO + H -----> Pb + H₂O
mass of PbO = 446g
no. of moles = mass / molar mass
= 446 g / 223.3 g/mol
= 1.99 mols
1.99 moles of PbO produced 1.99 moles of Pb
molar mass of Pb = 207.2 g/mol
mass of Pb = no. of moles × molar mass
= 1.99 mol × 207.2 g/mol
= 412.2 g
Thus, Lead (ii) oxide PbO, reacts with hydrogen to for lead and steam. calculate the mass of lead in formed when 446g of lead (ii) oxide is 412.2g.
To learn more about no. of moles here
https://brainly.com/question/26416088
#SPJ1
calculate the volume in liters of a m potassium dichromate solution that contains of potassium dichromate . be sure your answer has the correct number of significant digits.
Incomplete question but using assumed values, the volume of m potassium dichromate solution that contains potassium dichromate is 9.1L
To calculate the volume of solution, we use the equation for molarity of solution:
Molarity of solution = mass of solute/molar mass of solute*volume of solution (in liter)
Where assumed values are:
Molarity of solution = 0.15 M
Given mass of potassium dichromate = 400. g
Molar mass of potassium dichromate = 294.15 g/mol
Volume solution in liter = x
i.e.
0.15 = 400/294.15*x
Volume of solution in liter = 400/294.15*0.15
Volume of solution in liter = 400/44.12
Volume of solution in liter = 9.06
Learn more about volume in liters from:
https://brainly.com/question/14558965?referrer=searchResults
#SPJ4
Click oil basics to explore the natural resources needed for the production of plastics. use the information to answer the question. which of these ingredients is important in making plastics? carbon dioxide particulate matter natural gas volatile organic compounds
The correct answer is option C: natural gas
The ingredient which is important in making plastics is natural gas.
Plastics are the refined form of natural gas, plant liquids, and crude oils.
Plastics can be manufactured in two ways: synthetic and biobased.
Synthetic plastics come from raw materials including natural gas, crude oil, and coal.
On the contrary, biobased plastics are manufactured from renewable materials such as starch, vegetable fats, oils, and carbohydrates.
However, the most common method of plastic manufacturing is the transformation of raw materials into refined propane and ethane.
In the next step, ethane and propane undergo cracking which transforms them into ethylene and propylene which are the building blocks of long chains of polymers.
If you need to learn more about plastics click here:
https://brainly.com/question/2519981
#SPJ4
Answer:it's C
Explanation:
I just did it on Edge you're welcome Happy early Halloween you're beautiful and have a nice day. :)
PLEASE HELP HALF MY GRADE!!What is a procedure you can follow to find evidence that yeast and plant cells produce carbon dioxide
during cellular respiration?
Answer:
Cellular respiration is the process where cells break down glucose and then they convert it into energy. Cellular respiration is important because without cellular respiration there would not be any energy and without energy there would not be any food.
A 1.02 g magnesium supplement contains 25.0% Mg by mass. The magnesium is present in the supplement as MgO(s) (molar mass 40.30 g/mol). How many grams of MgO(s) are in the magnesium supplement? Write your answer using three significant
Based on the percentage mass of magnesium oxide in the sample, the mass of Magnesium oxide in the sample is 0.42 g.
What is the mass of magnesium in the supplement?Magnesium is a metallic element with an atomic number of 12.
Magnesium is an important mineral that is used as a supplement s well as in drugs such as milk of magnesia.
Considering the given magnesium supplement:
1.02 g magnesium supplement contains 25.0% Mg by mass.
Magnesium is present in the supplement as magnesium oxide, MgO.
The molar mass of magnesium oxide, MgO = 40.30 g/mol
Molar mass of magnesium = 24.0 g
Percentage mass of Magnesium oxide in the sample = 40.3 / 24 * 25
Percentage mass of Magnesium oxide in the sample = 42%
Mass of Magnesium oxide in the sample = 42 % * 1.02
Mass of Magnesium oxide in the sample = 0.42 g
Learn more about percent mass at: https://brainly.com/question/17812901
#SPJ1
Look at the wave in the picture. If it has a wavelength of 2 cm, how far apart are points A and B? How do you know?
From the description, we can see that A and B is one wavelength thus the distance between the points is also 2 cm.
What is the wavelength?We can define the wavelength as the distance between two successive crests or the distance between two successive troughs. The crests are above the chart and the troughs are below the chart.
In this case, we have been asked to obtain the distance between A and B. Knowing that the points A and B are two successive crests and we have been told that the wavelength is 2 cm thus the distance between A and B is 2cm.
Learn more about wavelength:https://brainly.com/question/13533093
#SPJ1
in a 4.00 l pressure cooker, water is brought to a boil. if the final temperature is 115.0 °c at 3.20 atm, what quantity in moles of steam are in the cooker?
The no. of moles of steam present in the cooker is 0.402 mol.
The ratio between a substance's given mass in a chemical reaction and the mass of one mole of that material is used to determine how many moles there are of that substance. Any material has an atomic mass of one mole, or 6.023 x [tex]10^{23}[/tex], according to Avogadro. Additionally, No. of moles is employed to represent concentration measurements like mole per liter and molecular weight.
Given:
Pressure, P = 3.20atm
Volume, V = 4L
Temperature, T = 115℃ = 115 + 273 = 388K
To find:
No. of moles, n = ?
Formula:
PV = nRT
Calculations:
n = 3.20 x 4 / 0.082 x 388
n = 0.402 mol
Result:
0.402 moles of steam is present in the cooker.
Learn more about No. of moles here:
https://brainly.com/question/13450173
#SPJ4
When a metal is reduced by reaction with carbon, which element is removed from the compound?
A: Carbon
B: Oxygen
C: Hydrogen
D: Silver
Answer:
Oxygen
Explanation:
reduction is the removal of oxygen to a substance
1. How does the atomic structure of sodium determine its uses and functions?
Answer:octahedral coordination around Na + and Cl − centers.
Object A has a density of 2.6 g/cm³. What is the mass of 36.5 cm³ of object A in units of g
According to solving the object's mass is 94.9g.
Mass: What is it?One of the fundamental quantities in physics and the most fundamental aspect of matter is mass. A body's mass is the measurement of the volume of matter it contains. The kilogram serves as the SI unit for mass (kg). This is how the mass formula appears:
Mass is equal to Density x Volume.
How do mass, density, and volume relate to one another?How much space an object or substance occupies is determined by its volume.
A substance or object's mass is a measure of how much matter it contains. The density of an object or substance is the ratio of its mass to its volume, or the quantity of material it contains (its mass).
According to the question
Object density=2.6g/cm³
volume= 36.5 cm³
Formula :-Mass = Density × Volume
M=2.6g/cm³ ×36.5 cm³
M=94.9g
To know more about Mass ,Density and volume visit:-
brainly.com/question/13799762
#SPJ10
Which type of force exists as a result of positive and negative charges?
A. Electromagnetic
B. Weak nuclear
C. Strong nuclear
D. Gravitational
The type of force exists as a result of positive and negative charges is C. Strong nuclear.
What does the strong nuclear force do?
It is known to often holds Quarks, the fundamental particles that make up protons and neutrons of the atomic nucleus, are held together by the strong force, which also keeps protons and neutrons together to form atomic nuclei.
Note that Positively charged protons as well as neutrally charged neutrons are created when the strong nuclear force brings together positively and negatively charged quarks. In the atomic nucleus, protons and neutrons are also held together by the strong nuclear force.
Learn more about negative charges from
https://brainly.com/question/26136016
#SPJ1
what is causing the marshmallow to change their sate of matter
Answer:
Any form of semi high energy waves cause the water molecules inside the marshmallow to vibrate which heat and soften the sugar matrix inside the marshmallow. The weakened sugar matrix allows air bubbles within the marshmallow to expand rapidly and the marshmallow puffs up and becomes goo. If this proccess is repeated it can completly change it's state of matter.
Explanation:
If the [H*] changed from [1 x 10-7] to [1 x 10-4], what is the new [OH-]?
01x 10-4
01x10-3
01 x 10-10
01x 10-7
The new concentration of hydroxide ions [OH-] is calculated as 1 x [tex]10^{-10}[/tex] M if the [[tex]H^{+}[/tex]] changed from [1 x [tex]10^{-7}[/tex]] to [1 x [tex]10^{-4}[/tex]] during the concentration change.
How do you determine H+ using pH?By “undoing” the common logarithm by exponentiating both sides with base 10 to obtain [[tex]H^{+}[/tex]] = 10pH.
How can I determine pH?You need to know the hydronium ion concentration in moles per litre to determine the pH of an aqueous solution (molarity). The formula pH = - log is then used to get the pH. [H3O+].
Concentration of [tex]H^{+}[/tex] ions = [[tex]H^{+}[/tex]] = 1 x [tex]10^{-7}[/tex]
When concentration of [[tex]H^{+}[/tex]] ions changed to 1 x [tex]10^{-4}[/tex] M
[[tex]H^{+}[/tex]] = 1 x [tex]10^{-4}[/tex] M
The pH of the solution will further change to:
pH = -log [[tex]H^{+}[/tex]]' = -log [1 x [tex]10^{-4}[/tex]] = 4
pH + pOH = 14
pOH = 14 - 4 = 10
And we know that:
pOH = -log [[tex]OH^{-}[/tex]]
10 = -log [[tex]OH^{-}[/tex]]
[[tex]OH^{-}[/tex]] = 1 x [tex]10^{-10}[/tex] M
Important IdeasIf the pH of the solution is known, it is possible to compute the hydrogen ion concentration in a solution, [H+], in mol L-1.
The negative logarithm (to base 10) of the hydrogen ion concentration in mol L-1 is used to calculate pH. pH equals -log10[H+]
To know more about pH, visit:
https://brainly.com/question/27945512
#SPJ13
is it true that the physical constants of abuse substance depend on the mass of the sample used
No, the physical constants of abuse substance do not depend on the mass of the sample used.
Does mass have an impact on density?Mass and volume are intimately correlated with density. In reality, it explains the precise nature of the connection between the two. By dividing the mass of an object by its volume, we may get its density. The mass is considered to have a low density if it has a high volume but a tiny mass.
By dividing a material's mass by its volume, one can get a material's density, which is defined as its mass per unit volume. Returning to the molecular level, the mass of a material's molecules and how tightly they are packed together determine the material's density.
To know more about density :
https://brainly.com/question/15164682
#SPJ9
How would the amount of water produced compare if you ignited a very large balloon of hydrogen and oxygen instead of a very small balloon filled with the same reactants (hydrogen and oxygen)?
The amount of water that we get from the large balloon is greater than the amount of water that we get from the small balloon.
What is the ratio of the reactants in water?
We know that water is composed of hydrogen and oxygen. Let us recall that the ratio of the water and the oxygen that form the water molecule is fixed irrespective of the volume of the water that we use for the reaction.
If we compare if you ignited a very large balloon of hydrogen and oxygen instead of a very small balloon filled with the same reactants, we would notice that the amount of water that is formed from the large balloon of hydrogen and oxygen is greater than that produced from a very small balloon filled with the same reactants.
Learn more about reactants:https://brainly.com/question/17096236
#SPJ1
Find the balanced molecular equation FeSO4(aq) + K3PO4(aq) →
Answer:
3FeSO4 + 2K3PO4 → Fe3(PO4)2 + 3K2SO4
Explanation: