Question 22

Which change would cause the volume of a balloon to increase?

A

increasing the temperature of the balloon

B

increasing the atmospheric pressure

C

removing gas from the balloon

D

placing the balloon under water

What is the balanced chemical equation and type of chemical reaction of solid calcium oxide and sulfur dioxide gas react to form solid calcium sulfite?

What do leaf and a cheek have in common

5. The partition coefficient of Compound A is 7.5 in dichloromethane (a. k. a. methylene chloride) with respect to water. a.

When 1.98 g of NaOH (molar mass = 40 g/mole) are added to 75.0 mL of a 0.350 M HCl solution in a coffee-cup calorimeter, the temperature changes from 21.7°C to 25.8°C. If the resulting solution has a mass of 78.

Brown eye color is a dominant trait and blue eye color is a recessive trait. What typically happens when someone inherits one allele for brown eyes and one for blue eyes? a. The person has brown eyes, and brown eye color remains a dominant trait. b.

7. Convert 158 g of C to moles.

How does molecular size affect solubility

Is mass conserved when 200 g of water undergoes a physical change? Use complete sentences to support your answer by explaining how this can be demonstrated.

For wach of the following cases, state whether the density of the object increases, decreases, or remains the same: (a) A sample of chlorine gas is compressed (b) A lead weight is carried up a high mountain. (c) A sample of water is frozen.

A bomb calorimeter, or a constant volume calorimeter, is a device often used to determine the heat of combustion of fuels and the energy content of foods. In an experiment, a 0.