Total energy of an isolated system remains constant throughout time; this is referred to as conservation of energy.
A)
Each mole of Rb₃PO₄ will release:
3 moles of Rb⁺
1 mole of PO₄⁻³
So a total of 4 moles of ions are released per mole.
If there are 0.5 moles, 2 moles of ions will be released.
B)
Each mole of Cr₂(SO₄)₃ will release:
2 moles of Cr⁺³
3 moles of SO₄⁻²
So a total of 5 moles of ions are released per mole.
When there are 0.5 moles, 2.5 moles of ions will be released.
175 lbs x ( 1 kg/ 2.2 lbs) = 79.55 kg.
Note that 1 kg = 2.2 lbs
