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maksim [4K]
3 years ago
10

How many atoms are present in 3 moles of chromium?

Chemistry
2 answers:
Lena [83]3 years ago
5 0
1 mole  chromium -------------- 6.02 x 10²³ atoms
3 moles chromium ------------ ( atoms chromium )

atoms chromium = 3 x ( 6.02 x 10²³) / 1

atoms chromium = 1.806 x 10²⁴ / 1

= <span>1.806 x 10²⁴ atoms of chromium

hope this helps!</span>
DENIUS [597]3 years ago
4 0
In any element or substance, one mole of the substance is equivalent to 6.022 x10^23 atoms per mole. This is expressed as the Avogadro's number which is useful in finding out the total number of atoms in a sample. In this case, we are given with 3 moles of chromium. this is equivalent to 1.8066 x1024 atoms

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What are the molecular formula of 20 elements​
baherus [9]

Explanation:

Hydrogen (H)

Helium (He)

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Boron (B)

Carbon (C)

Nitrogen (N)

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Hope this is correct and helpful

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3 0
3 years ago
What does intrinsic mean in science
quester [9]

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astraxan [27]
Whats the question tho?
8 0
3 years ago
A sample of a substance that has a density of 0.824 g/mL has a mass of 0.451g. Calculate the volume of the sample.
Allushta [10]
Density can be calculated using the following rule:
density=mass/volume
therefore,
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8 0
3 years ago
student in chemistry 150-02 weighed out 55.5g of octane c8h18 and allowed it to react with oxygen, o2 the product formed were ca
Tasya [4]

Answer:

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Explanation:

unbalanced reaction:

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balanced for semireactions:

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(2) 10(4H+ + O2 → 2H2O)

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(1) + (2):

balanced reaction:

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                     20 - O2 - 20

                      8 - H - 8

3 0
3 years ago
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