PLEASE HURRY THIS IS TIMED A sample of a substance contains 3.70 1023 formula units. How many moles are contained in the sample?
0.615 1024 mol
0.615 mol
b. 0.615 1023 mol
d. 22.3 mol
C.

Consider this initial-rate data at a certain temperature for the reaction described by

Inside a flashbulb, oxygen surrounds a thin coil of magnesium. when the flashbulb is set off, a chemical reaction takes place in which magnesium combines with oxygen to form magnesium oxide. which of the chemical equations matches the reaction above? a. mg + o2 mgo2 + energy b. 2mg + o mg2o + energy c. 2mg + o2 2mgo + energy d. mg + o mgo + energy

How many moles of water are created if 3 moles of hydrogen react completely with excess oxygen?