What is the Atomic mass of helium

What mass of aluminum can be plated onto an object in 755 minutes at 5.80 a of current? what mass of aluminum can be plated onto an object in 755 minutes at 5.80 a of current? 73.5 g 24.5 g 147 g 220. g 8.17 g?

A student places a small amount of water in a glass dish and then carefully places a small paperclip on the surface of the water. The paperclip floats. What happens if the student adds a drop or two of dish soap to the water? Explain your answer.

Aqueous sulfuric acid reacts with solid sodium hydroxide to produce aqueous sodium sulfate and liquid water. If 1.92 g of sodium sulfate is produced from the reaction of 4.9 g of sulfuric acid and 7.

Which is not an example of chemistry research in the field of energy? A. developing rechargeable batteries B. producing hook-and-loop tape C. determining the usefulness of oil from soybean plants D. studying the effects of insulation

Which element has atoms that can bond to each other in rings and networks?

When does a spring tide take place? At the beginning of spring Only during the spring season Only after spring is over At any time

The highest cloud are known as

What is the mass of 4.85 X 10^22 atoms of iron (Fe) ?

If element x has 95 protons how many electrons does it have

Which of the following when dissolved in deionized water would make a good conducting solution? a) methanolb) sugarc) baking soda