The gas in the ozonosphere that absorbs most of the ultraviolet rays from the sun is the___. Oxygen Nitrogen Ozone. Carbon dioxide.

If 1.63 times 10 negative 4 of helium dissolves in 100.0g of water, what is the concentration in parts per million

Idon’t know how to solve this question

The table describes how some substances were formed substance 19 description formed by boiling pure water formed by combining three hydrogen atoms to every nitrogen atom formed by adding 5 g of sugar to 1 l of water formed by compressing carbon under high pressure based on the given descriptions, which substance is most likely a mixture?