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116问答网 > 一杯盐水200克,含盐率20 %⑴如果加入50克水,那么含盐率是多少?⑵如果加入50克盐，那么含

一杯盐水200克,含盐率20 %⑴如果加入50克水,那么含盐率是多少?⑵如果加入50克盐，那么含

率是多少？⑶如果加入50克水和50克盐，那么含盐率是多少？

2025-03-16 04:27:58

推荐回答（2个）

回答1：

1、200*20%/（200+50）=40/250=16%；含盐率16%
2、（200*20%+50）/200=90/200=45%；含盐率45%

回答2：

盐的溶质质量为 200g×20%=40g
1丶加入50g水后含盐率是 40g/200g+50g×100%=16%
2丶加入50g盐后含盐率为 40g+50g/200g+50g=36%
3丶加入50g盐和50g水后的含盐率为 40g+50g/200g+100g=30%

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