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#13 Write a chemical equation for the reaction of zinc metal with aqueous copper (II) nitrate...

#13 Write a chemical equation for the reaction of zinc metal with aqueous copper (II) nitrate to produce aqueous zinc (II) nitrate and copper metal.

#17 Potassium chlorate decomposes to potassium chloride and oxygen, as shown in the equation below. 2 KClO3 (s) → 2 KCl (s) + 3 O2 (g) How many grams of oxygen are produced if 148 grams of potassium chloride are produced from the decomposition of 244 grams of potassium chlorate?

#18 If the student collected 0.938 g of Na2CO3 and the theoretical yield is 0.946 g, what is the percent yield?

#21 A sample of argon gas occupies 1.00 L at STP. What is the pressure in atm, if the gas expands to 6.65 L and the temperature is 39 ∘C?

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