More reactive than others
Yes... that is correct.
CH4 is methane so the coefficent in front of it would double the number of atoms of each element
A=P +N
A=13+14
A=27 this the answer
Use the density to convert volume into mass.
since the density is in g/ml and the volume was given in Liters, we need to first convert the Liters into mililiters. just multiply by 1000 or move the decimal three times.
0.1200 Liters= 120.0 mL
120.0 mL (0.8787 grams/ 1 mL)= 105 grams