将一定质量的铜粉加入到100mL某浓度的稀硝酸中，充分反应后，容器中剩有m1g铜粉，此时共收集到NO气体448mL(标准状况)。然后向上述混合物中加入足量稀硫酸至不再反应为止，容器剩有铜粉m2g，则(

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将

一定质量的铜粉加入到100mL某浓度的稀硝酸中，充分反应后，容器中剩有m₁g铜粉，此时共收集到NO气体448mL(标准状况)。然后向上述混合物中加入足量稀硫酸至不再反应为止，容器剩有铜粉m₂g，则(m₁－m₂)为

A：5.76

B：2.88

C：1.92

D：0

上一题下一题 0.0难度选择题更新时间:2018-10-03 07:09:17

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A

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    Hunter and Sally went down the street with their mother. They could buy a pet today. “I cannot wait to see the pets!”Sally said. She wanted a cat. Hunter wanted a frog or a snake.
    They went into the pet shop. “Look! That rabbit made a hole to hide in,” Sally said. “Look at those two cats,” said Hunter. Their cage was on the floor. The small and brown cats were asleep on each other.
    Sally leaned over the cage. She wanted a better look. The gold necklace she had around her neck came loose. It fell into the cage. It woke up the cats. “Oh no!” Sally cried. “I lost my necklace! It is in the cage!” Then the shopkeeper came. He opened the cage, and took out the necklace. At last, they bought two cats and took them home.

Where	Sally and Hunter would go to ____ .
Who	____ went there with them..
What	Sally wanted to buy ____ .
Who	____ lost her necklace.
Who	____ took the necklace out of the cage.

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