What two countries have nearly 50% of global coal reserves? a. united states and canada b. united states and russia c. brazil and russia d. brazil and canada

the answer is USA and Russia

Ans: B) United States and Russia

Energy sources can be broadly classified into two categories: Renewable and non-renewable sources.

Renewable sources are those that can be naturally replenished like, solar energy, wind, hydrothermal etc

In contrast, non-renewable sources of energy are a finite resources and cannot be replenished. Fossil fuels like coal, oil, gas are all non-renewable sources. Coal is the most widely used source of energy with the United States and Russia being the two countries that have nearly 50% of the global coal reserves.

Explanation:

To find the number of moles given the number of entities we use the formula

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question

N = 1.93 × 10²³ particles

We have

We have the final answer as

Hope this helps you