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defon
3 years ago
13

Calculate the mass percentage of the sulfate ion in MgSO4.

Chemistry
1 answer:
andriy [413]3 years ago
6 0

Answer:

The answer to your question is 80%

Explanation:

Data

mass percent of SO₄⁻²

molecule  MgSO₄

Process

1.- Calculate the molecular mass of magnesium nitrate

molecular mass = (1 x 24) + (1 x 32) + (4 x 16)

                           = 24 + 32 + 64

                           = 120 g

2.- Calculate the molecular mass of sulfate ion

molecular mass = (1 x 32) + (4 x 16)

                          = 32 + 64

                          = 96

3.- Write a proportion to solve this problem

                    120 g of MgSO₄ ---------------- 100 %

                      96 g of SO₄⁻²   ---------------  x

                      x = (96 x 100) / 120

                      x = 80 %                  

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A condor has a wing span of 3.05 m. What is the wing span in feet
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Answer:

The condor has a wing span of 10 feet

Explanation:

This can be solved by a simple rule of three

In a rule of three problem, the first step is identifying the measures and how they are related, if their relationship is direct of inverse.

When the relationship between the measures is direct, as the value of one measure increases, the value of the other measure is going to increase too. In this case, the rule of three is a cross multiplication.

When the relationship between the measures is inverse, as the value of one measure increases, the value of the other measure will decrease. In this case, the rule of three is a line multiplication.

In this problem, our measures are the wing span of the condon in meters and the wing span of the condor is feet. As the value of one of these measures increases, the other is going to increase too.

We know that 1m has 3.281 feet,

So we have the following rule of three:

1m - 3.281 feet

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x = 3.821*3.05

x = 10 feet

The condor has a wing span of 10 feet

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2 years ago
IM JUST GIVING AWAY POINTS!!!!!!
myrzilka [38]
2.5128e10 is the answer
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3 years ago
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4. If 0.130 g of p-aminophenol is allowed to react with excess acetic anhydride, what is the theoretical yield of acetaminophen
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Hey There!

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next, since you already know your limiting reactant (p-aminophenol), convert it to mols  :

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Hope that helps!

8 0
2 years ago
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