You have a closed tank of air at a pressure of 406 kPa and temperature of 303 K. When the tank and the air are heated to 373 K, what is the pressure if the volume remains constant? * 240 kPa
360 kPa
589.35 kPa
499.80 kPa

How many moles does 80.0 h2o respresent

Reacting masses1 calcium carbonate breaks down on heating to produce calcium oxide and carbondioxide gas.caco3 + cao + co2a student heats 15 g of calcium carbonate strongly in a crucible.relative atomic masses (a): ca = 40, c = 12, o = 16.calculate the mass of calcium oxide produced by this reaction.(5 marks)

Which of these describes the rate of this chemical reaction? h2 + cl2 → 2 hcl a. an increase in the concentration of hcl and h2 with time b. an increase in the concentration of hcl with time c. an increase in h2 and cl2 with time d. a decrease in hcl and cl2 with time