Which of the following factors could prolong the availability of fossil fuels

a. increasing alternative energy sources

b. increasing demand for fossil fuels

c. reducing alternative energy sources

d. making new fossil fuels

2.describe the steps to get oil from its natural state to market

1) Answer is: a.increasing alternative energy sources.

For example, using more biofuels derived directly from plants or solar energy.

Biofuel is renewable energy source, but not green energy source. Green energy does not harm ecosystems, contribute to acid rain, or worsen global warming. Biofuels produce greenhouse gases (carbone dioxide, methane).

Solar radiation is the source of electric energy.

2) Answer is:

a) Separation.

Crude oil is mixture (solution) consist of several different hydrocarbons (alkanes, alkenes...).

This hydroalkanes can be separated from mixture (crude oil) using distilation (usually fractional distillation), because they have different boiling points.

b) Conversion.

Hydrocarbons with bigger molecular mass are split into lighter ones.

c) Treatment.

For example gasoline, diesel fuel and heating oil are made.

1. for the first question, we must find the mass of the anhydrous salt, mgso₄. the molar mass for mgso₄·7h₂o is 246.47 g/mol, while that of mgso₄ is 120.37 g/mol.7.834 g mgso₄·7h₂o * 1 mol mgso₄·7h₂o/246.47 g * 1 mol mgso₄/1 mol mgso₄·7h₂o * 20.37 g mgso₄/mol = 0.647 g mgso₄

2. mass of water = mass of sample - mass of anhydrous salemass of water = 7.834 - 0.647 = 7.19 gpercent water in hydrate = 7.19/7.834 * 100 = 91.74%