Chemistry, 20.06.2021 04:30 rjennis002
7. 2. Nêu hiện tượng, viết PT xảy ra khi:
a. cho hh gồm 0,2 mol Fe2O3 và 0,2 mol Cu vào dd H2SO4 loãng dư
b. Cho bột Fe vào dd AgNO3 dư
c. cho hh gồm 0,2 mol K và 0,2 mol Al2O3 vào nước dư
d. cho bột Cu vào dd H2SO4 đặc, nóng dư
e. Cho ure vào dd nước vôi trong dư
Answers: 2
Chemistry, 22.06.2019 07:30
11. phosphorus-32 is radioactive and has a half life of 14 days. how much of a 124 mg sample of phosphorus-32 is present after 56 days? a) 7.75 mg b) 15.5 mg c) 31.0 mg d) 62.0 mg
Answers: 3
Chemistry, 22.06.2019 10:00
3. how much energy in joules is required to evaporate .0005 kg of liquid ammonia to vapor at the same temperature? 4. how much energy ( in megajoules ) is given up by .75 kg of water at 0c when it freezes to form ice at 0c? 5. explain how heat works between and at critical temperatures?
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Chemistry, 22.06.2019 22:00
If a solution contains 3 moles/liter of sodium chloride (nacl, made of sodium ions and chloride ions), what is the osmolarity of this solution
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Chemistry, 22.06.2019 23:30
Rank substituents in order of their priority when assigning the e or z label to an alkene. i, ch2i , h, ch2ch2cl, f
Answers: 2
7. 2. Nêu hiện tượng, viết PT xảy ra khi:
a. cho hh gồm 0,2 mol Fe2O3 và 0,2 mol Cu vào dd H2SO4 lo...
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