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ziro4ka [17]
3 years ago
6

What is equal to the number of particles in 36 grams of carbon-12?

Chemistry
1 answer:
HACTEHA [7]3 years ago
4 0

Answer:

3 moles

Explanation:

To solve this problem we will  use the Avogadro numbers.

The number 6.022×10²³ is called Avogadro number and it is the number of atoms, ions or molecules in one mole of substance.  According to this,

1.008 g of hydrogen = 1 mole =  6.022×10²³  atoms.

18 g water = 1 mole = 6.022×10²³ molecules

we are given 36 g of C-12. So,

12 g of C-12 = 1 mole

24 g of C-12 =  2 mole

36 g of C-12 = 3 mole

So 3 moles of C-12 equals to the number of particles in 36 g of C-12.

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How many moles of chlorine (Cl) atoms are in a sample of 1.72 × 1022 atoms?
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<span>1mole of Cl atoms contain the Avogadro's number 6x10 exp 23(10 to the power of 23)
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3 0
3 years ago
Aluminum costs about 85 cents per pound (453.592 g). How much is one atom of aluminum?
kakasveta [241]

One aluminum atom will cost 0.84 × 10⁻²³ cents.

Explanation:

Aluminium costs 85 cents per 453.592 grams.

number of moles = mass / atomic weight

number of moles of aluminium = 453.592 / 27 = 16.8 moles

To calculate the number of aluminum atoms we use the Avogadro's number:

if         1 mole of aluminum contains 6.022 × 10²³ aluminum atoms

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X = (16.8 × 6.022 × 10²³) / 1 = 101.17 × 10²³ aluminum atoms

Now, taking in account the aluminium price, we devise the following reasoning:

if         101.17 × 10²³ aluminum atoms costs 85 cents

then   1 aluminum atom costs Y cents

Y = (1 × 85) / (101.17 × 10²³) = 0.84 × 10⁻²³ cents

Learn more about:

Avogadro's number

brainly.com/question/1445383

brainly.com/question/13272803

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NO2 + H20-------&gt; HNO2+ HNO3​
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