Answer:
2, 1, 1, 4.
Explanation:
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In this case, for the given chemical reaction:
We can see how there is one SO4 on the left and two on the right, thus, we add a 2 in front of H2SO4:
Next, since there are 8 atoms of hydrogen on the left and two on the right, we add a 4 in front of H2O to obtain:
Which is now balanced so the coefficients 2, 1, 1, 4.
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6 valence electrons
I think it is oxidation number
10 km = 10000m
30 min = 1800 sec
10000 ÷ 1800 = 5.556 m/s
Approximately .
The mole fraction of a compound in a solution is:
.
In this question, the mole fraction of in this solution would be:
This solution consist of only and water (i.e., .) Hence:
From the question:
Apply the formula to find the number of moles of and in this solution.
The molar fraction of in this solution would be:
(Rounded to three significant figures.)