In this reaction, the mass of CaCO3 o
a) is greater than the mass of Cao plus
the mass of CO2
Ob) equals the mass of Cao minus the
mass of CO2
OC) is less than the mass of CaO plus the
mass of CO2
d) equals the mass of CaO plus the mass
of CO2

Write two balanced equations 1. dissolving of solid sodium hydroxide in water 2. the reaction of sodium hydroxide solution with hydrochloric acid

Which of the following are sources of revenue for media companies? a. direct sales to producers b. advertising and subscriptions c. online purchase d. capital investments

4.25g sample of solid ammonium nitrate dissolves in 60.0g of water in a coffee-cup calorimeter, the temperature drops from 22.0 c to 16.9 c. assume that the specific heat of the solution is the same as that of pure water. calculate delta(h) (in kj/mol nh4no3) for the solution proces.