Để xác định hàm lượng NaCl có trong mẫu X người ta tiến hành cân chính xác 2,17g mẫu X. Hoà tan mẫu X vào nước thu được dung dịch Y. Sau đó dùng dung dịch AgNO3 dư để kết tủa hoàn toàn. Lọc lấy kết tủa rửa sạch rồi đem sấy thu được 2,42g. Tính hàm lượng % NaCl có trong mẫu X
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Chemistry, 22.06.2019 04:30
How do i complete this electrolysis of water lab? i’m at home, so i don’t have the materials, and the lab didn’t properly work and was incomplete at school.
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Chemistry, 22.06.2019 09:00
This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.
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Chemistry, 22.06.2019 23:30
The density of the solid phase of a substance is 0.90 g/cm3 and the density of the liquid phase is 1.0 g/cm3. a large increase in pressure will a. lower the freezing point b. raise the freezing point c. lower the boiling point d. raise the triple point e. lower the triple point
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Chemistry, 23.06.2019 05:00
Match the term to its description match term definition chemical energy a) internal energy caused by vibrations of atoms and molecules electrical energy b) electromagnetic energy that travels in waves radiant energy c) the movement of an electrical charge thermal energy d) potential energy stored in the bonds between atoms
Answers: 1
Để xác định hàm lượng NaCl có trong mẫu X người ta tiến hành cân chính xác 2,17g mẫu X. Hoà tan mẫu...
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