Which option describes a phase change? OA. Plasma erupting from the sun
DB. A helium balloon rising into the sky
OC. Gasoline evaporating into the air
Air leaking from a tir

How many miles of water are produced if 5.43 mol pbo2 are consumed

Asample of air with a volume of 2.20m3 at a pressure of 105 kpa and a temperature of 30c is cooled to 10c and the pressure is reduced to 75.0 kpa. what is the new volume? 6.9 1.34 2.56 43.0 2.88

Sodium sulfate dissolves as follows: na2so4(s) → 2na+(aq) + so42- (aq). how many moles of na2so4 are required to make 1.0 l of solution in which the na concentration is 0.10 m?