help please

1. In one sentence, state the objective (goal) of today's experiment in the bee below. 2. Write the chemical equation for thermal decomposition of sodium malfite heptalyydrate (Na2SO47H2O) 3. Why is it important that the crucible be thoroughly dried prioe to meanuring its mass? 4. How many moles of water are there in 21.50 grams of water (molecular weight, MW, of water is 18.015g/mol) ? Show calculations and place your answer in the box below: Calculations (SHOW ALL UNITS!): Answer: 5. Given that there are 455 cars in the parking lot, 114 of them silver, what is the pereentage (%) of the silver cars, overall? Show caleulations and place your answer in the box below: Calculations (SHOW ALL UNITSI)