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larisa [96]
3 years ago
6

Help!: Determine the mass of oxygen that can be removed from 25.0 grams of Fe2O3?

Chemistry
1 answer:
Lorico [155]3 years ago
3 0

7.5g

Explanation:

Given parameters:

Mass of Fe₂O₃ = 25g

Unknown:

Mass of oxygen that can be removed  = ?

Solution:

Find the ratio of the oxygen atoms to that of the compound using the molar mass. Then multiply with the given mass.

   Mass of oxygen = \frac{molar mass of oxgygen}{molar mass of [tex]Fe_{2}O_{3}}[/tex]  x given mass

  Mass of oxygen = \frac{3 x 16}{160} x 25 = 7.5g

Learn more:

Percentage composition brainly.com/question/8654167

#learnwithBrainly

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Explanation:

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2 years ago
It takes 2 g of chlorine to sanitize 1,000,000g of water. How much chlorine will it take to sanitize a 40,000-gallon pool? ( 1 g
dimulka [17.4K]

Answer:

0.1g (Gallon) of chlorine

Explanation:

<u>Formula</u>

1 gallon = 3.7L; the density of water is 1.0g/ml

<u>Given</u>

2g (gallon) of chlorine to sanitize = 1,000,000g (gallon) of water

<u>Solve</u>

If 2g (gallon) chlorine = 1,000,000g (gallon)

∴, ? chlorine = 40,000

The First step; set up an equation

1000000/2 = 40000/?

The Next step; divide 1 million to 2

1000000 ÷ 2 = 500000

Then, divide the result by 40000

40000 ÷ 500000 = 0.08

In the nearest unit that is 0.1

Therefore, it will take 0.1g (gallon) of chlorine to sanitize a 40,000-gallon pool.

7 0
2 years ago
Read 2 more answers
I need an answer now please asap and you will me marked brainiest please it's missing I need it now.
kogti [31]

Answer:

Molecular Mass:

1. 40g per mole

2. 19g per mole

3. 64g per mole

4. 32 g per mole

5. 17g per mole

6. 59.5g per mole

7.58.5 g per mole

8.220g per mole

9. 78g per mole

10. 200g per mole

Explanation:

Molecular Mass = Number of atom x atomic mass of an element

Your Welcome~

8 0
2 years ago
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