Use the equation for the combustion of butane: 2 C, H, + 13 0,8 CO, +10 H, O 4. If you had 99. 08g of butane react, how many grams of carbon dioxide would be produced? 5. If you had 290. 38 grams of butane, how many grams of water would be produced? 6. How many grams of oxygen gas are needed for the complete combustion of 307. 47 grams of butane? 7. How many grams of oxygen would be required if you had 160. 87 grams of butane?

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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.