Renewable energy is energy that
- will not run out
- will not increase in cost
- will not cause pollution
- can be recycled

Choose all the answers that apply. ionic compounds dissolve easily in water do not dissolve in water have low melting points have high melting points conduct electricity when melted

What is the most important factor in determining climates.

An alloy contains 66 g of pure zinc. what is the percentage of zinc in the alloy? express your answer to two significant figures and include the appropriate units.