Answer:
Cr2O72- + 5Fe2+ +14H+ -> 2Cr3+ + 5Fe3+ +7H2O
Explanation:
Fe2+ is oxidized to Fe3+ and Cr6+ is reduced to Cr3+
Maybe isotopes but if you need a name isotopes of carbon because their number of electrons remains unchanged
Answer:
1
Explanation:
Oxygen is a pure substance therefore it is only made up of one kind of atom
Answer: 1. 199.995 g of NaOH & 2. 2.014 g of H2
Explanation:
1. 5.00 mol H2O x __2 mol NaOH__ x __39.999 g__
2 mol H2O 1 mol
= 199.995 g of NaOH
2. 36 g H2O x __1 mol __ x __1 mol H2__ x __2.016 g__
18.016 g 2 mol H2O 1 mol H2
= 2.014 g of H2