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【简答题】
计算以下溶液的浓度 (1)100 mL HCl pH = 3.50 (2)100 mL CH 3 COOH pH = 3.50 (HAc : K a = 1 . 8 × 10 − 5 ) (3)比较(1)(2),相同pH,弱酸的浓度大?还是强酸的浓度大?
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皮皮学刷刷变学霸
举一反三
【单选题】What do you know about“power walking”from the passage?
A.
It is a kind walking people do in the park.
B.
It may burn more calories than running.
C.
People walk very fast to break into a run.
D.
This kind of walking sets a pace for running.
【多选题】What does the image of the narrator walking through the dark, empty streets suggest?
A.
fear of death
B.
isolation and despair
C.
bravery
D.
destruction
【单选题】Tony likes walking in the country and _______。
A.
also does Mary
B.
Mary does also
C.
so Mary does
D.
so does Mary
【简答题】下列各项中，不属于银行汇票必须记载事项的是（ ）。
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