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PolarNik [594]
3 years ago
14

How many moles are in 458 grams of Na2SO4

Chemistry
1 answer:
Anuta_ua [19.1K]3 years ago
7 0
There are 3.2 moles of Na2SO4
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Write a scientific report on the clouds seeding using condensation nuclei and showing its relationship to saturated solutions.
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Select 2-possible ointment bases. Select one or more:
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Explanation:

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3 years ago
C12H22011+1202--&gt;12CO2+11H20
kogti [31]

Answer:

0.185moles

Explanation:

Given parameters:

Volume of O₂  = 49.8L

Unknown:

Number of moles of sucrose required  = ?

Solution:

We can assume that the reaction takes place at standard temperature and pressure.

From this, we can find the number of moles of oxygen that reacted and extrapolate to that of sucrose.

Chemical equation;

           C₁₂H₂₂0₁₁  +  120₂   →   12CO₂   +   11H₂0

Number moles  = \frac{volume of gas}{22.4}   at STP

Number of moles of oxygen gas = \frac{49.8}{22.4}   = 2.22moles

           12 moles of oxygen gas combines with  1 mole of sucrose

       2.22 moles of oxygen gas will combine with \frac{2.22}{12}   = 0.185moles

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3 years ago
3. Which of the following are missing from the food web shown below?
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