阿摩線上測驗
1. A 0.4230-g sample of impure sodium nitrate was heated, converting all the sodium nitrate to 0.2864 g of sodium nitrite and oxygen gas. Which is the percent of sodium nitrate in the original sample?
(A) 65%
(B) 74%
(C) 83%
(D) 92%
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統計： A(0), B(1), C(0), D(0), E(0) #3423504
統計： A(0), B(1), C(0), D(0), E(0) #3423504
