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Veseljchak [2.6K]
3 years ago
14

PLEASE hurry

Chemistry
2 answers:
gizmo_the_mogwai [7]3 years ago
8 0

Answer:

The answer is A.

Explanation:

lorasvet [3.4K]3 years ago
4 0

Answer:

A on edge

Explanation:

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0.4 g/ml.............................

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Given the reaction to 2NaOH + H2 SO4 â Na2 SO4 + 2H2 O, what is the total number of grams of NaOH needed to react completely wit
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Answer:

4 moles, 160 g

Explanation:

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

For H_2SO_4:-  

Mass of H_2SO_4 = 196 g

Molar mass of H_2SO_4 = 98 g/mol

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus,

Moles= \frac{196\ g}{98\ g/mol}

Moles\ of\ Sulfuric\ acid= 2\ mol

According to the given reaction:

2NaOH+H_2SO_4\rightarrow Na_2SO_4+2H_2O

1 mole of sulfuric acid reacts with 2 moles of NaOH

So,  

2 moles of sulfuric acid reacts with 2*2 moles of NaOH

Moles of NaOH must react = 4 moles

Molar mass of NaOH = 40 g/mol

<u>Mass = Moles*molar mass = 4\times 40\ g = 160 g</u>

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How many moles of hydrogen are produced when 6.28 mil of oxygen form
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On a class trip to the coast, you and your lab partner find a rock in the spot marked in red on the diagram. You show your teach
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Explanation:

In this case the answer would be

Water is a polar molecule with positive and negative side

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