Cr^2+ + H2MoO4 + H+ → Cr^3+ + Mo + H2O
Cr goes from +2 to +3 or loses one e-
Mo is +6 in H2MoO4 so it goes to 0 gaining 6 e-
so we must multiply Cr by 6 to balance e-
6Cr^2+ + H2MoO4 + H+ → 6Cr^3+ + Mo + H2O
now we balance the spectators
take O first - 4 on left then, change the right side
6Cr^2+ + H2MoO4 + H+ → 6Cr^3+ + Mo + 4H2O
now we have 8 H's on the right
we don't want to touch the H2MoO4
so we make H+ up to 6 for a total of 8 on the left
6Cr^2+ + H2MoO4 + 6H+ → 6Cr^3+ + Mo + 4H2O
Then, It's balanced
Answer:
d
Explanation:
a mutation is the variation of a norm, a mutation can alter any organism in any way
In a thermochemical equation, the enthalpy change is always written next to the balanced chemical equation.
For example, chemical reaction:
2Mg + O₂ → 2MgO. ΔH = -1204 kJ; this is exothermic reaction,
or chemical reaction: Fe₂O₃(s)
+ 3CO(g) → 2Fe(s) + 3CO₂<span>(g);ΔH = + 26.3 kJ, ths is endothermic reaction.</span>
<span>There are two types
of reaction: endothermic reaction (chemical reaction that absorbs more
energy than it releases) and exothermic reaction (chemical reaction that
releases more energy than it absorbs). </span>
B. Energy can only be transformed
Answer:
The answer is "
".
Explanation:
Please finds the complete question in the attached file.
The mass of acetone to be weighed is
