SRPH
What is the solution to log (9x)-log 3 = 3?

Look at the reaction below: ca(hco3)2 --> caco3 + co2 + h2o first, balance the reaction. once balanced, use dimensional analysis or another method to find out how many moles of carbon dioxide will be produced if we start with 16.5 moles of calcium bicarbonate (calcium hydrogen carbonate). = mol of co2 number needs to be reported to three significant figures.

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

Explanation for basic character?