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What happened in 2012 and how does it illustrate the importance of understanding the sun and how it works?

If you have 5.25 grams of methane (ch4), how many grams of co2 will you produce ?

Cucl2 + 2nano3 cu(no3)2 + 2nacl what is the percent yield of nacl if 31.0 g of cucl2 reacts with excess nano3 to produce 21.2 g of nacl? 49.7% 58.4% 63.6% 78.7%