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2 years ago

Is this correct please check!!!

Chemistry

2 answers:

avanturin [10]2 years ago

6 0

No I don’t think it is

harina [27]2 years ago

5 0

Answer: yes it has to be

Explanation: i have done this answer before and got a 100 but dont remember all the answers

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How many moles of Na2SO4, are produced from 7.00 moles of (NH4)2SO4?

Harlamova29_29 [7]

Answer:

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2 years ago

I have a few questions from my homework and I was wondering if I can get some help

sashaice [31]

Well it breaks down into small parts

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2 years ago

How many molecules in 9.18 moles of C11H12O22

Setler [38]

Answer:

55.3 × 10²³ molecules

Explanation:

Given data:

Number of moles of C₁₁H₁₂O₂₂ = 9.18 mol

Number of molecules = ?

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

For example,

18 g of water = 1 mole = 6.022 × 10²³ molecules of water

For given data:

9.18 mol × 6.022 × 10²³ molecules /1 mol

55.3 × 10²³ molecules

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2 years ago

5. How many grams of CuCl2 are required to make 75 mL of a 0.20M solution?

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2 years ago

-- A scientist combines 14 grams of potassium nitrate with an unknown amount of

igor_vitrenko [27]

Answer:

The unknown amount of potassium chloride is 13.6 grams.

Explanation:

The reaction of 14 grams of KNO₃ with KCl produces a total mass of 27.6 grams of the products.

The law of conservation of mass tells us that the total mass of the reactants must be the same that the total mass of the products. So, we can find the mass of KCl as follows:

$m_{r} = m_{p}$

Where <em>r</em> is for reactants and <em>p </em>is for products

$m_{KNO_{3}} + m_{KCl} = m_{p}$

$14 g + m_{KCl} = 27.6 g$

$m_{KCl} = 27.6 g - 14 g = 13.6 g$

Therefore, the unknown amount of potassium chloride is 13.6 grams.

I hope it helps you!

5 0

2 years ago