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3 years ago

Please help! Question is on the bottom

Chemistry

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choli [55]3 years ago

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It’s extremely bad quality I really can’t read it

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If 3.1 moles of potassium chloride react with oxygen, how many moles of potassium chlorate would be produced?

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Answer: 19 dollar fortnite card Explanation:who wants it

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2 years ago

Nitrogen has two isotopes. One has an atomic mass of 14.003

Ilia_Sergeevich [38]

Answer:

d= 14.007 amu

Explanation:

Abundance of N¹⁴ = 99.63%

Abundance of N¹⁵ = 0.37%

Atomic mass of N¹⁴ = 14.003 amu

Atomic mass of N¹⁵ = 15.000 amu

Average atomic mass = ?

Solution:

Average atomic mass = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass) / 100

Average atomic mass = (14.003 × 99.63)+(15.000× 0.37) /100

Average atomic mass = 1395.12 + 5.55 / 100

Average atomic mass = 1400.67/ 100

Average atomic mass = 14.007 amu.

6 0

2 years ago

Which of the following describes a reaction that reaches equilibrium?

alexandr1967 [171]

Answer:The product and reactants reach a final, unchanging level.

8 0

2 years ago

a chemical reaction was used to separate a sample in to it's components what conclusion about the sample can be formed by Sony t

otez555 [7]

It was a compound, hence it needed to be separated into its individual components by chemical means.

7 0

2 years ago

(23.4m)(14m) rounded off to the correct number of significant figures

VARVARA [1.3K]

The value of the given expression up to correct significant figures is $330 m^2$ .

The rule that applies for the multiplication and division is :

The least number of significant figures in any number of the problem determines the number of significant figures in the answer.

The rule that applies for the addition and subtraction is :

The least precise number present after the decimal point determines the number of significant figures in the answer.

Given:

The expression: (23.4m)(14m)

To find:

The answer up to correct a number of significant figures.

Solution

Number of significant figures in '23.4' = 3

Number of significant figures in '14' = 22

$=(23.4m)(14m)\\=(23.4m)\times (14m)\\=327.6 m^2$

The number with the least significant figures is '14' is 2, so the answer will be reported up to 2 significant figures:

$=327.6 m^2\approx 330 m^2$

Number of significant figures in '330' = 3

The value of the given expression up to correct significant figures is $330 m^2$ .

Learn more about significant figures here:

brainly.com/question/11904364?referrer=searchResults

brainly.com/question/17177568?referrer=searchResults

5 0

2 years ago

Please help! Question is on the bottom​

Please help! Question is on the bottom