How many grams of magnesium are in 7.43 x 10 to the 22 atoms of mg

How many moles of oxygen gas are produced from the decomposition of six moles of potassium

Solid tin exists in two forms: white and gray. for the transformation sn(s, white) → sn(s, gray) the enthalpy change is -2.1 kj/mol and the entropy change is -7.4 j/(mol*k). a. calculate the gibbs free energy change for the conversion of 1.00 mol white tin to gray tin at -30℃. b. will white tin convert spontaneously to gray tin at -30℃? c. at what temperature are white and gray tin thermodynamically equivalent at a pressure of 1 atm?

Sort these isotopes by whether they are most likely to undergo fusion or fission. hydrogen-3, uranium-233, plutonium-239, hydrogen-1, helium-3, plutonium-241