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Dmitrij [34]
3 years ago
12

Someone please helpppp!!!!!!Question 7

Chemistry
1 answer:
Snezhnost [94]3 years ago
5 0

answer:

612.5

Explanation:

from the equation, no. of mole of iron oxide is obtaibed from mass over molar mass equals to 5.5 moles, taking mole ratio as 1:2 to get moles of iron as 10.94 moles, then the mass is obtained by moles of iron times molar mass

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(c) by increasing it's mass

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A 12.0% sucrose solution by mass has a density of 1.05 gem, what mass of sucrose is present in a 32.0-mL sample of this solution
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Answer:

Option C. 4.03 g

Explanation:

Firstly we analyse data.

12 % by mass, is a sort of concentration. It indicates that in 100 g of SOLUTION, we have 12 g of SOLUTE.

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We need to determine, the volume of solution for the concentration

Density = mass / volume

1.05 g/mL = 100 g / volume

Volume =  100 g / 1.05 g/mL → 95.24 mL

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When you remove energy from a substance there will be a *
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3 years ago
Easy question <br> Who is the youngest in ateez
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The reaction that occurs in a Breathalyzer, a device used to determine the alcohol level in a person's bloodstream, is given bel
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Answer:

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Therefore, the rate of disappearance of C₂H₆O = 2.46 mol/min

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