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never [62]
2 years ago
9

How many atoms in 2.8 mol of neon? (show working)

Chemistry
1 answer:
ioda2 years ago
8 0
To find the amount of atoms in a mole you will use Avragadro's constant. So 2.8 x 6.02 x 10^23 (2.8x 6.02 ten to the power of 23) 
2.8x 6.02 10^23
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Which best describes a chemical reaction that follows the law of conservation of matter?
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If the percent (mass/mass) for a solute is 8% and the mass of the solution is 200 g, what is the mass of solute in solution?
tatyana61 [14]

Answer:

The answer to your question is  16 g

Explanation:

Data

Percent by mass = 8%

Mass of the solution = 200 g

Mass of solute = ?

Formula

Percent by mass = mass of solute / mass of solution x 100

- Solve for mass of solute

  Mass of solute = Percent by mass x mass of solution / 100

- Substitution

   Mass of solute = 8 x 200 / 100

- Simplification

    Mass of solute = 1600 / 100

- Result

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The number of ferrous ions present in jar are 3.1x 10^21.

<h3>Steps</h3>

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