If 27.3g of C8H18 is combusted, according to the equation below, what mass of water is produced? 2C8H18 + 25O2 --> 16CO2 + 18 H2O,

molar masses: C8H18 = 114.3 g/mol O2 = 32.0 g/mol CO2 = 44.0 g/mol H2O = 18.0 g/mol

i think it is d. e because the next one is igneous.

im pretty sure its b

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.