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Molodets [167]
2 years ago
7

Which one is idk what it is giving brainliest

Chemistry
2 answers:
Salsk061 [2.6K]2 years ago
8 0

Answer:

B or C

Explanation:

I don't really know sorry.

Nata [24]2 years ago
8 0

Answer:

D

Explanation:

I think D I also took the test.

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PLSSSSSSSS help !!!!! One mole of an element contains which of the following?
irina [24]

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6.02 × 10²³ atoms

Explanation:

The number 6.02 × 10²³ is called Avogadro number. It is the number of atoms,  ions and molecules in one gram atoms of an element, one gram ions of substance and one gram molecule of a compound.

For example:

32 g of oxygen = one mole = 6.02 × 10²³  atoms O.

1.008 g of hydrogen = one mole = 6.02 × 10²³  atoms of H.

or

18 g of H₂O =one mole = 6.02 × 10²³  molecules of H₂O

44 g of CO₂ = one mole = 6.02 × 10²³  molecules of CO₂

or

62 g of NO₃⁻ = one mole of NO₃⁻ = 6.02 × 10²³  ions of NO₃⁻

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3 years ago
What is the mole ratio of PCl3 to PCl5?
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It 1:1 I had an online review and thats the answer it told me it was.
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How many moles of hydrogen<br> are in 3.7 moles of C8H11 NO2?
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Which of the following quantities is conserved in a chemical reaction
Nezavi [6.7K]

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In both nuclear and chemical reactions, two physical quantities are seen to be conserved and unchanging: the number of particles and the total charge. A constant number of particles in nuclear reactions does not imply that mass is conserved.

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