A Helium Balloon contains 24.3 moles of Helium Gas. How many grams of Helium is this?

0.165 g

6.01 g

97.2 g

1.46 x 10^25 g

Why do you think oxygen is important

After the first (main) earthquake, other smaller shocks may occur at times for:

0.210 mol of octane is allowed to react with 0.760 mol of oxygen. which is the limiting reactant?

A solid that forms when two liquids react with one another

If you have 100 grams of a chemical with a half-life of 8 days, then how much will you have after 40 days? A. 6.25 B. 20 g C. 12.5 g D. 3.125 g

Which molecule is a source of energy, a store of energy, and can mix with water?

How many atoms will you find in 2.0 moles of he?

An atom of nitrogen has seven electrons. Which diagram correctly respresents the arrangement of these electrons?

A farmer has concerns about the nitrogen levels in her soils. What can she do to ensure that the nitrogen bacteria are replenished in the soil? Question 6 options: Clear cut the area surrounding the field.

The changing of gas to liquid