At stp, 1.0 liter of helium contains the same total number of atoms as
(1) 1.0 l of ne (3) 0.5...
Chemistry, 07.10.2019 05:30 dessssimartinez6780
At stp, 1.0 liter of helium contains the same total number of atoms as
(1) 1.0 l of ne (3) 0.5 l of rn
(2) 2.0 l of kr (4) 1.5 l of ar
Answers: 1
Chemistry, 20.06.2019 18:04
Can anyone (a-level) a student was analysing a carbonate compound, mco3, containing an unknown group 2 metal, m. the student carried out thermal decomposition on 0.730g of the carbonate and measured the volume of gas produced. mco3 (s) mo (s) + co2 (g) the student collected and measured 120cm3 of carbon dioxide. 1 mol of carbon dioxide occupies 24 000 cm3 under these conditions. calculate the molar mass of the group 2 carbonate and hence deduce the identity of the group 2 metal, m.
Answers: 3
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