Chemistry, 25.07.2021 20:00 gracie2492
Có hỗn hợp bột kim loại gồm: nhôm sắt và đồng . Bằng cách nào hãy tách các kim loại trên ra khỏi nhau ?
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The valence of aluminum is +3, and the valence of the chlorine is -1. the formula fir the aluminum chloride is correctly written as
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Which rate indicates the number of children that would be born per woman if she were to live to the end of her child bearing years
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In what way do investigations build scientific knowledge? the results of investigations lead to questions that cannot be tested. they reflect the opinions and social values of scientists, ensuring valid information. the results of investigations lead to new questions, which lead to new investigations. they are not influenced by the research of earlier scientists, so they are able to address gaps in understanding.i
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Có hỗn hợp bột kim loại gồm: nhôm sắt và đồng . Bằng cách nào hãy tách các kim loại trên ra khỏi nha...
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