Answer:
0.536 mol HNO₃
Explanation:
Step 1: Convert 37.0 g of NO₂ into mol NO₂:
37.0 g NO₂ x 1 mol NO₂/46.0 g NO₂ = 0.8043 mol NO₂
Step 2: Convert 0.8043 mol NO₂ into mol HNO₃:
0.8043 mol NO₂ x 2 mol HNO₃/3 mol NO₂ = 0.5362 mol HNO₃
Step 3: Round to 3 significant figures:
0.5362 mol HNO₃ -> 0.536 mol HNO₃
Answer:
I think it's nitrogen I'm not really sure..
Answer:
Empirical CHO
molecular C4H4O4
Explanation:
From the question, we know that it contains 41.39% C , 3.47% H and the rest oxygen. To get the % composition of the oxygen, we simply add the carbon and hydrogen together and subtract from 100%.
This means : O = 100 - 41.39 - 3.47 = 55.14%
Next is to divide the percentage compositions by their atomic masses.
C = 41.39/12 = 3.45
O = 55.14/16 = 3.45
H = 3.47/1 = 3.47
Now we divide by the smallest value which is 3.45. We can deduce that this will definitely give us an answer of 1 all through as the values are very similar.
Hence the empirical formula of Maleic acid is CHO
Now we go on to deduce the molecular formula.
To do this we need the molar mass. I.e the amount in grammes per one mole of the compound.
Now we can see that 0.378mole = 43.8g
Then 1 mole = xg
x = (43.8*1)/0.378 = 115.87 = apprx 116
[CHO]n = 116
(12 + 1 + 16]n = 116
29n = 116
n = 116/29 = 4
The molecular formula is thus C4H4O4
Soluble means it can be dissolved
Insoluble means it can't be dissolved