Exam 2

A sample of gas initially has a volume of 859 mL at 565 K and 2.20 atm. What pressure will the sample have if the volume changes to 268 mL while the temperature is increased to 815 K?

10.2 atm

A large balloon is initially filled to a volume of 25.0 L at 353 K and a pressure of 2575 mm Hg. What volume of gas will the balloon contain at 1.35 atm and 253 K?

45 L

To what temperature must a balloon, initially at 25°C and 2.00 L, be heated in order to have a volume of 6.00 L?

894 K

An ionic bond is best described as

A transfer of electrons from one atom to another.

The following equation is an expression of

Boyle's law.

The effect of increasing the temperature on the volume of a gas can be calculated by using

Charles's law.

What is the name of CuSO4?

Copper(II) sulfate

Which of the following is an acceptable way to represent dinitrogen monoxide?

Dinitrogen Monoxide; N₂O

Which of the following statements is generally true about electronegativity?

Electronegativity increases as we move left to right and decreases as we move top to bottom.

How many bonds does a phosphorus atom typically form?

Four.

The variation in pressure with temperature is defined by

Gay-Lussac's Law.

Using most common charges, the ionic compound that forms between lithium and sulfur has the formula.

Li2S

Give the formula for lithium nitrate.

LiNO3

Identify the element whose ion only exists as 1+.

Lithium

Which of the following best describes the relationship of molecules in a liquid with those in a gas at the same temperature?

Molecules in the liquid are much closer together than those in the gas.

Low electronegativities are associated with which type of elements?

Noble gases

Give the name for P4O5.

Phosphorus pentoxide.

When an ionic compound forms between potassium and oxygen atoms?

Potassium donates electrons to oxygen.

The compound represented below has the formula Na2S.

Sodium sulfide.

Examine the following representation of a change of state. Which of the following is the correct term for this change?Which of the following is the correct term for this change?

boiling