有100g15%的NaNO3溶液,使其浓度增大一倍,可采用的方法是()A、蒸发掉42.5g水B、蒸发掉50g溶剂C、加入15gNaNO3D、升高温度
有100g15%的NaNO3溶液,使其浓度增大一倍,可采用的方法是()
- A、蒸发掉42.5g水
- B、蒸发掉50g溶剂
- C、加入15gNaNO3
- D、升高温度
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