Use the mass and volume data to calculate the density of mercury to the nearest tenth. Mass of mercury = 57 g Volume of mercury = 4.2 mL

Why does the temperature not change during a phase change? There is a change from potential energy to kinetic energy. Changes in potential energy do not result in temperature changes No one really knows.

a 25 ml sample of gas is in a syringe at 22C if it was cool down to 0 C what will the volume of the gas become

Compare the position of the subatomic particles in the plum-pudding and nuclear models

When writing a PSA, it is not necessary to brainstorm because you already have all of the information from your persuasive essay.

If you change the state of something, say, liquid to solid, is it a physical or chemical change?

assuming gasoline can be represented as C8H18, how much oxygen is needed to completely burn this fuel. answer in grams of oxygen per gram of gasoline

The gases carbon dioxide, oxygen, and argon are mixed in a container. All gases have the same partial pressure, and the total pressure of the container is 32,680 Pa. What is the partial pressure of argon?

What do all oxygen atoms have in common

Arrange the elements in order of increasing atomic radius Mg Ba F S

Based on the enthalpy changes given for the reactions, which reactions are endothermic? (check all that apply) 2H2O → 2H2 + O2, ΔH = 484 kJ C + O2 → CO2, ΔH = - 394 kJ H2 + Br2 → 2HBr, ΔH = - 73 kJ 2NH3 → N2 + 3H2, ΔH = 92 kJ