Which pair of elements will form an ionic bond?
2 answers:
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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 :
Answer : The formula for each of the following is:
(a)
(b)
(c)
Explanation :
- Alkanes are hydrocarbon in which the carbon atoms are connected with single covalent bonds.
The general formula of alkanes is where n is the number of the carbon atoms present in a molecule of alkane.
- Alkenes are hydrocarbon in which the carbon atoms are connected with double covalent bonds.
The general formula of alkenes is where n is the number of the carbon atoms present in a molecule of alkene.
- Alkynes are hydrocarbon in which the carbon atoms are connected with triple covalent bonds.
The general formula of alkynes is where n is the number of the carbon atoms present in a molecule of alkyne.
(a) An alkane with 22 carbon atoms
Putting n = 22 in the general formula of alkane, we get the formula of alkane as, or
(b) An alkene with 17 carbon atoms
Putting n = 17 in the general formula of alkene, we get the formula of alkene as, or
(c) An alkyne with 13 carbon atoms
Putting n = 13 in the general formula of alkyne, we get the formula of alkyne as, or
<u>Answer:</u> The correct answer is Option A.
<u>Explanation:</u>
Mole ratio is defined as the ratio between the stoichiometric coefficients of the molecules present in the chemical reaction.
For the given balanced chemical equation:
By Stoichiometry of the reaction:
3 moles of iron metal reacts with 4 moles of water to produce 1 mole of iron oxide and 4 moles of hydrogen gas.
The mole ratio of
Hence, the correct answer is Option A.