Write the balanced equation, then outline the steps necessary to determine the i
ID: 951385 • Letter: W
Question
Write the balanced equation, then outline the steps necessary to determine the information requested in each of the following: The number of moles and the mass of chlorine, Cl_2, required to react with 10.0 g of sodium metal, Na, to produce sodium chloride. NaCl. The number of moles and the mass of oxygen formed by the decomposition of 1.252 g of mercury(II) oxide. The number of moles and the mass of sodium nitrate. NaNO_3, required to produce 128 g of oxygen. (NaNO_2 is the other product.) The number of moles and the mass of carbon dioxide formed by the combustion of 20.0 kg of carbon in an excess of oxygen. The number of moles and the mass of copper(II) carbonate needed to produce 1.500 kg of copper(II) oxide. (CO_2 is the other product.)Explanation / Answer
a. 2 Na + Cl2 = 2 NaCl
10 gm Sodium needs 0.21749 mole Cl2 which is 15.42 gm
b. 2 HgO = 2 Hg + O2
1.252 gm HgO will form 0.00289 mole of O2 which is 0.09248 gm
c. 2 NaNO3 = 2 NaNO2 + O2
To form 128 gm of oxygen 8 moles of NaNO3 is need which is equal to 679.98gm
d. C + O2 = CO2
20 kg carbon will produce 1665.18 mole of CO2 which is 73.283 kg
e. CuCO3 = CuO + CO2
18.857 mole or 2.32989 kg of CuCO3 will produce 1.5 kg of CuO
f. 12.85gm alkene will produce 0.4580 mole or 86.05 gm of 1,2 dibromo compound
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