The number of moles of oxygen (O2) required to completely react with 27.4 mol of H2 is 13.7 moles.
<h3>How to calculate number of moles?</h3>
The number of moles of a substance can be calculated using stoichiometry as follows:
The following balanced chemical equation is given as follows:
2H2 + O2 = 2H2O
According to this question, 2 moles of hydrogen gas (H2) reacts with 1 mole of oxygen gas (O2).
This means that 27.4 moles of hydrogen gas (H2) will react with 27.4/2 = 13.7moles of oxygen gas.
Therefore, the number of moles of oxygen (O2) required to completely react with 27.4 mol of H2 is 13.7 moles.
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Answer:
B. Mixture
because air,sea water and alloy are example of Mixture
Answer:
H2O-a,e, C6H14 - b,c,d
Explanation:
H2O - (a) KI, e(NaC2H3O2) because they are ionic compounds
C6H14 -(b) C8H18
, (c) grease
, (d) CH3(CH2)12OH because they are mostly un-polar.
a leguminous plant, Phaseolus aureus, whose seeds are used as food in India.
Answer:
1. 0.662 M
2. 2.294 M
3. 0.357 M
Explanation:
The Molarity of a compound is simply defined as the mole of compound per unit litre of the solution. It can be obtained mathematically by the following equation:
Molarity = mole /Volume
With the equation above, let us calculate the molarity for the question given above.
1. Mole of CuSO4 = 0.49 mol Volume = 0.74 L.
Molarity of CuSO4 =?
Molarity = mole /Volume
Molarity of CuSO4 = 0.49/0.74
Molarity of CuSO4 = 0.662 M
2. Mole of Co(NO3)2 = 0.78 mol Volume = 0.34 L.
Molarity of Co(NO3)2 =?
Molarity = mole /Volume
Molarity of Co(NO3)2 = 0.78/0.34
Molarity of Co(NO3)2 = 2.294 M
3. Mole of K2Cr2O4 = 0.30 mol Volume = 0.84L.
Molarity of K2Cr2O4 =?
Molarity = mole /Volume
Molarity of K2Cr2O4 = 0.30/0.84
Molarity of K2Cr2O4 = 0.357 M