A, coal is more useful and products more heat
Answer:
not correct you are
Determine ????∘ , δ????∘ , and K for the overall reaction from the balanced half-reactions and their standard reduction potentials. 2co3++h3aso3+h2o co3++e− h3aso4+2h++2e− ↽−−⇀ 2co2++h3aso4+2h+↽−−⇀ co2+↽−−⇀ h3aso3+h2o????∘=1. 92 v????∘=0. 575
Examples of fixed costs include equipment costs and salaries; while variable costs include costs of materials and transportation costs.
<h3>What is "cost"?</h3>
In a company, costs include all the money that has to be paid for the company to offer a product or service.
<h3>What is the difference between a variable cost and a fixed cost?</h3>
Variable costs can vary or change depending on the number of units produced; on the other hand, fixed costs are constant.
<h3>What are some fixed and variable costs?</h3>
Fixed costs:
- Equipment cost.
- Interests on a debt.
- Salaries.
Variable costs:
- Cost of materials such as metal or wood.
- Transportation and packaging costs.
Learn more about costs in: brainly.com/question/15135554