Someone help with this pls

A+b→2c when the reaction begins, the researcher records that the rate of reaction is such that 1 mole of a is consumed per minute. after making changes to the reaction, the researcher notes that 2 moles of a are consumed per minute. what change could the researcher have made to effect this change?

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

Can you me with this i really appreciate it