When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 24.0 g of carbon were burned in the presence of 76.7 g of oxygen, 12.7 g of oxygen remained unreacted. What mass of carbon dioxide was
produced?

answerto predict;

here are some of the ways in which chemical and nuclear reactions differ.

explanation:

weight of any object is given by

w = m*g

where m is mass of the object and g is the acceleration due to gravity.

for earth the value of g is 9.8 m/s^2 so

w=117.6 n m=12 g=?

117.6=12g => g=9.8 m/s^2

which is the force of gravity on earth.