常温常压下,1.0 kg H2O(A)中加入NaBr(B),水溶液的体积(以cm3表示)与溶质B的质量摩尔浓度mB的关系可用下式表示: 求:当mB = 0.25 mol • kg-1时,在溶液中NaBr(B)VB = 24.668 cm3 • mol-1正确吗?
You can _____ some bottles of wine, or some chocolates, or a bunch of flowers.
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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