Find the mass of 6.34 × 1024 formula units of NaBF4 (sodium tetrafluroborate).
Answer in units of g.

Problem page gaseous ethane reacts with gaseous oxygen gas to produce gaseous carbon dioxide and gaseous water . if of water is produced from the reaction of of ethane and of oxygen gas, calculate the percent yield of water. be sure your answer has the correct number of significant digits in it.

In this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced?

Miner's coal distributors does not mine coal itself, nor does it even store or handle the coal. instead, miner's solicits orders for low sulfur coal from other firms, then purchases the required amount from suppliers and directs them to ship the coal to its customers. what is miner's