How many moles of O2 are required to completely react with 4.58 grams of H2? (Round to two decimal places)

Zinc + lead(ii) nitrate yield zinc nitrate + leadwhat's the chemical equation for this?

About 70 percent of the earth's surface is water-covered, and about 96.5 percent of all earth's water is salt water. identify the watery feature on earth that is made of freshwater rather than salt water. a) bay b) glacier c) ocean d) sea it is not incomplete this is the true question

How many moles of gas are present if p=11 atm, v=12l, t=185k?