Answer
a. See draw below
b. Liquid
c. Heptane is not soluble in water.
d. Heptane floats in water.
e. $$C_7H_{16} + 11O_2 \longrightarrow 7 CO_2 + 8H_2O + energy$$
Work Step by Step
a. 'Hept' = 7 carbon chain.
b. Room temperature $\approx$ 25 ºC, since the boil temperature is 98 ºC, which is greater, and hydrocarbons are normally not present in solid form at room temperature, it is a liquid.
c. Hydrocarbons are not soluble in water.
d. Density of water = 1.00 g/mL, therefore, heptane has a lower density, and will float.
e. Just write the equation in which heptane reacts with oxygen to produce CO2, H2O and energy, then balance it.
