Balanced equation:
<span>2 Na + 2 H₂O = 2 NaOH + H₂</span>
mole ratio :
2 moles Na ----------- 2 moles H₂O
12 moles Na --------- ? moles H₂O
moles H₂O = 12 x 2 / 2
moles H₂O = 24 / 2
= 12 moles of H₂O
hope this helps!
Answer:
Oxidation state of S in SO3^2- is +4
Explanation:
S in SO3^2-=
S = ?
O = -2
S + 3 moles of O * -2 = -2
S + (-6) = -2( it has charge -2)
S - 6 = -2
S = -2 + 6
S = +4
Note, the sign is very important
Don't confuse SO3 together with SO3^2-, the oxidation state of S in SO3 is + 6, how?
S = ?
O = -2
S + 3 * -2 = 0 ( because it has no charge)
S - 6 = 0
S = +6
And in SO3^2-
S = +4
The difference is that one has charge SO3^2- and the other doesn't SO3.
Answer:
Using dimensional analysis, we have....
4.515x1024 atoms x 1 mole/6.022x1023 atoms = 7.4975 moles = 7.498 moles of PD
So the official answer is 7.5
Explanation:
"Purellium Distinkamide" is a silly joke name for a made-up compound. The idea of this question is that no matter what the substance we are talking about is - water (H2O), hydrogen gas (H2), or even "Purellium Distinkamide" - a mole is always the same number of molecules, 6.022 x 1023. This is Avogadro's number and you have probably seen it around class a lot!
The person above me is correct
Answer: read your book
Explanation: if you read it should be in there