Balance the reaction then solve the problem: H, +N – NH, What mass, in grams, ofNH, is produced when 77 g of N, is consumed?
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Asample of tin (ii) chloride has a mass of 0.49 g. after heating, it has a mass of 0.41 g.  what is the percent by mass of water in the hydrate?   %

What is the average rate of the reaction between 10 and 20 s?

Which is true about metals used for jewelry, such as platinum and gold? a. they have low flammability. b. they have low reactivity. c. they have high flammability. d. they have high reactivity.