What is the mass of a 12.56L sample of carbon dioxide?

Which of the following would be an accurate picture of the earth during the summer time of the northern hemisphere?

Two metal blocks that have slightly different temperatures are placed next to one another. after five minutes, they both have lower but equal temperatures. according to the law of conservation of energy, what  most likelyhappened? energy was created inside the blocks. energy was destroyed inside the blocks. energy was absorbed into the blocks from outside the system. energy was transferred from the warmer block to the cooler block.

How many grams of phosphorus are contained in 5.09 moles of phosphorus?