Which gas is produced when limestone react with hydrochloric acid

Which of the following would be an accurate picture of the earth during the summer time of the northern hemisphere?

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.

When a scientific theory has been tested and proved by the scientific community, it becomes a law