Imagine you need to make a model that shows the locations of the parts of a sodium atom. Explain which type of model you would use.

What happens to the particles of a substance that changes state from liquid to gas?

Add 3.76 * 104 and 5.5 * 102 and write the answer in scientific notation. A. 9.26 * 104 B. 9.26 * 106 C. 3.82 * 106 D. 3.82 * 104

Which phase change at standard temperature and pressure represents sublimation?

Which of the following equations is balanced in a basic solution? A. ClO - (aq) + 2H - (aq) + 2e - Cl - (aq) + H2O (l) B. ClO - (aq) + H2O (l) Cl - (aq) + 2OH - (aq) C. ClO - (aq) + 2H - (aq) Cl - (aq) + H2O (l) D.

What happens to the temperature of a substance while it boils? (Does it increase, decrease, or remain the same?) Scientifically, why is this?

You are given a liquid. Briefly describe the steps you would take to show whether it is a pure substance or a homogeneous mixture.

What are the 4 variables that influence gas behavior

A 15.0 L tank of gas is contained at a high pressure of 8.20 x 10^4 torr. The tank is opened and the gas expands into an empty chamber with a volume of 6.00 x 10^4 L. Calculate the new pressure of the gas.

What amount of sucrose (C12H22O11) should be added to 5.83 mol water to lower the vapor pressure of water at 50 °C to 72.0 torr? The vapor pressure of pure water at 50 °C is 92.6 torr. 1

What element is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p65s2 4d10 5p4?