4.2g of sodium bicarbonate is equivalent to how many moles of sodium bicarbonate
2 answers:
<u>Answer:</u> The number of moles of sodium bicarbonate are 0.05 moles.
<u>Explanation:</u>
To calculate the number of moles, we use the equation:
Given mass of sodium bicarbonate = 4.2 g
Molar mass of sodium bicarbonate = 84 g/mol
Putting values in above equation, we get:
Hence, the number of moles of sodium bicarbonate are 0.05 moles.
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I believe here is the right question, so will just ignore the rest of the junk information from the previous message
The compound known as butylated hydroxytoluene, abbreviated as BHT, contains carbon, hydrogen, and oxygen. A 3.001 g sample of BHT was combusted in an oxygen rich environment to produce 8.990 g of CO2(g) and 2.944 g of H2O(g). Insert subscripts below to appropriately display the empirical formula of BHT
Answer:
Explanation:
A 3.001 g sample of BHT was combusted in an oxygen rich environment to produce 8.990 g of CO2(g) and 2.994 g of H2O(g).
If all the carbon in BHT is present in and also, all the hydrogen in BHT is present in
, Then we can determine for the corresponding numbers of moles of Carbon(C) and Hydrogen (H) respectively as:
moles of =
= 0.2043 moles
∴ moles of C = 0.2043 moles
moles of =
= 0.1635 moles
∴ moles of H = 2 × 0.1635 moles
= 0.327 moles
Since number of moles=
number of moles of H = 0.327 moles
molar mass of H = 1.008 g/mol
∴ mass of H in the sample = 0.327 moles × 1.008 g/mol
= 0.329616g
mass of C in the sample can be calculated as = 0.2043 moles ×
= 2.453643 g
mass of C+H in the sample = 2.453643g + 0.329616g
= 2.783259 g
mass of O can be calculated as = 3.001 g - 2.783259 g
= 0.217741 g
∴ moles of O = 0.217741g ×
= 0.0136 moles
Now, since; we've gotten our data, we can now proceed to calculate for the empirical formula.
C H O
0.2043 0.327 0.0136
Dividing by the least number (0.0136) , we have :
15.02 24.04 1
≅
15 24 1
Therefore, the empirical formula would be :