A balloon is filled with 6.5 L of helium gas at 25oC and 1.0 atm. What volume will the balloon have when the temperature is lowered to - 25oC and the pressure is increased to 1.5 atm?

An electromagnetic wave that has a higher frequency than ultraviolet light will have ___ than the ultraviolet light. A. Longer wavelength and higher energy B. longer wavelength and lower energy C. shorter wavelength and higher energy D.

O2 + CS2 → CO2 + SO2 Which of the following shows the equation balanced?

Enter a net ionic equation for the reaction between nitric acid and calcium hydroxide.

When the temperature of a reacting mixture increases, the rate of reaction increases. Which statement explains why the rate of reaction increases?

What word from the periodic table of elements is found in groups 3-12; these are fairly stable metals that either react slowly with or do not react with water and air; includes metals such as gold, nickel, and copper?

The most common isotope of chromium has a mass number of 52. which notation represent a different isotope of chromium?

What is the molar mass of 37.96 g of gas exerting a pressure of 3.29 on the walls of a 4.60 L container at 375 K?

Which must be the same when comparing 1 mol of oxygen gas, O2, with 1 mol of carbon monoxide gas, CO? A. the mass B. the volume C. the number of molecules D. the number of oxygen atoms

List three quantum numbers you know

Electronegativities of the elements Na, Al, P, and Cl follow a specific trend across the period. Based on this trend, an electron will be most strongly attracted to A) Na / B) Al / C) P / D) Cl.