50 POINTS. NEED ANSWERS ASAP! Balance the following chemical reactions. Hint: Take out some scratch paper! Some of them might be easy to balance in your head, but some of them are slightly more difficult
puzzles.

How many moles of magnesium is 3.01 x10^22 atoms of magnesium?

*will mark you brainliest + 15 points ** why does the equilibrium of a system shift when the pressure is increased? a. to maximize the stress on the system b. to stop restoring equilibrium to the system c. to increase the total moles of gas in the system d. to decrease the total moles of gas in the system

Given sno2 + 2h2 - sn + 2h20 tin oxide reacts with hydrogen to produce tin and water. how many moles of sno2 are needed to produce 500.0 grams of sn?