An unknown compound contains only C , H , and O . Combustion of 6.70 g of this compound produced 13.4 g CO 2 and 5.48 g H 2 O . What is the empirical formula of the unknown compound? Insert subscripts as needed.

c. heat could easily travel through the molecules in the air and escape/enter the flask. removing the air slows down the heat transfer.  

because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.

the answer is option a.

it would be b. 6co2 + 6h2o --> c6h12o6 + 6o2