Chemistry, 06.10.2021 14:00 mariagoldgames
Cho 12,8 gam hỗn hợp kim loại Mg và Cu tác dụng hoàn toàn với dung dịch HCl 7,3% được muối X, khí Y và chất rắn không tan. Sau phản ứng cho muối X tác dụng với dung dich NaOH lấy dư thì thu được 11,6 gam kết tủa.
a)Tính % khối lượng mỗi kim loại.
b) Tính thể tích khí Y (đo ở đktc).
c) Tính khối lượng dung dịch HCl cần dùng.
Answers: 1
Chemistry, 21.06.2019 22:30
Which statement best describes the oxidation numbers of the atoms found in magnesium chloride? a. magnesium has a 2- oxidation number and chlorine has a 1+ oxidation number. b. magnesium has a 2- oxidation number and chlorine has a 2+ oxidation number. c. magnesium has a 2+ oxidation number and chlorine has a 1- oxidation number. d. magnesium has a 1+ oxidation number and chlorine has a 1- oxidation number.
Answers: 2
Chemistry, 22.06.2019 09:40
How many grams of aluminum will there be in 98g of al2o3?
Answers: 1
Chemistry, 22.06.2019 19:20
15. which of the following is not human-caused groundwater pollution? a. water in an aquifer dissolves elements such as arsenic and mercury from surrounding rock. b. water in an aquifer is contaminated by leachate that seeps into the ground from a landfill. c. water in an aquifer becomes polluted with chemicals used in hydraulic fracturing, or fracking. d. water in an aquifer absorbs harmful bacteria from the drainage field of a septic tank.
Answers: 1
Cho 12,8 gam hỗn hợp kim loại Mg và Cu tác dụng hoàn toàn với dung dịch HCl 7,3% được muối X, khí Y...
Mathematics, 05.12.2021 07:40
Biology, 05.12.2021 07:40
Business, 05.12.2021 07:40
Mathematics, 05.12.2021 07:40
Business, 05.12.2021 07:40
Mathematics, 05.12.2021 07:40
Mathematics, 05.12.2021 07:40
Mathematics, 05.12.2021 07:40
English, 05.12.2021 07:40
Physics, 05.12.2021 07:40
English, 05.12.2021 07:40
Mathematics, 05.12.2021 07:40
Biology, 05.12.2021 07:40
Advanced Placement (AP), 05.12.2021 07:40