A balloon filled with 0.500 L of air at sea level at 1 atmosphere is submerged in the water to a depth that produces a pressure of 3.25 atm. What is the volume of the balloon at this depth?

Hydrogen gas produced in the laboratory by the reaction of magnesium and hydrochloric acid was collected over water at 25°C. The atmospheric pressure at the time was 742.5 mm Hg. What is the pressure of dry hydrogen gas if the vapor pressure of water at 25°C is 23.8 mm Hg?

Consider the following reaction: 2 Mg + O2 → 2 MgO △H rxn = -1203 kJCalculate the amount of heat in kJ associated with complete reaction of 4 moles of Mg.

Which one of the following species has the electron configuration of 1s22s22p6? 1.   Na+ 2.   O2- 3.   F-

Gas density can be calculated by dividing the mass of gas by its volume. If you took a balloon of gas and then warmed the balloon in a sunny window, what can now be said about the density of the gas in the balloon?

Which is a spectator ion from the following complete ionic equation:H+ (aq) + Br- (aq) + K+ (aq) + OH- (aq) → H2O (l) + K+ (aq) + Br- (aq)

Divers often inflate heavy duty balloons attached to salvage items on the sea floor. If a balloon is filled to a volume of 3.00 L at a pressure of 2.50 atm, what is the volume of the balloon when it reaches the surface at 1 atmosphere?

Given the balanced equation CH4 + 2 O2 → CO2 + 2 H2O, which of the following is NOT a correct conversion factor?

An atom that has the same number of neutrons asB56138a is:

Consider the following equation: CO + 2 H2 → CH3OH △H rxn = -128 kJCalculate the amount of heat in kJ associated with complete reaction of 8.08 g H2