A mixture of 33.6 g of Cr(NO3)2 and 60.5 g of CuSO4 is dissolved in sufficient water to make 98 mL of solution, where the cations react. In the reaction, copper metal is formed and each chromium ion loses one electron. How many electrons are transferred in the balanced net ionic equation with the smallest whole-number coefficients?
1. 5e-
2. 2e-
3. 7e-
4. 4e-
5. 1e-
(Part 2) What is the molar concentration of SO4^2- anions in the solution? Answer in units of M.
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Ответ:
Proton, electron and neutron are subatomic particle in atom.