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emmainna [20.7K]
3 years ago
5

What three things make up atoms?

Chemistry
1 answer:
harina [27]3 years ago
6 0
<span>Protons,neutrons and electrons.</span>
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Find the grams in 1.26 x 10^-4 mole of HC2 H3O2
ivolga24 [154]
Molar mass :

HC₂H₃O₂ = 1 + 12*2 + 1 * 3 + 16 * 2 = 60 g/mol

1 mole <span>HC₂H₃O₂ -------------- 60 g
</span>1.26x10-⁴ mole ----------------- mass

mass =  1.26x10-⁴ * 60

mass = 0.00756 g of <span>HC₂H₃O₂</span>

hope this helps!


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3 years ago
If you have 0.045 L of 0.465 M potassium bromide. How many moles of potassium bromide are present?
Mekhanik [1.2K]
The answer to your question is letter A! Hope that helps
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3 years ago
Which substance has a mass is 13.5 grams, and its volume is 5 cm 3.
solmaris [256]

Answer:

Substance is Aluminium

Explanation:

We are given;

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Volume; V = 5 cm³

Formula for density is;

density = m/V

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Density = 2.7 g/cm³

From the table attached, we can see that the element with a corresponding density of 2.7 is Aluminium

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3 years ago
where are the first repost of new scientific discoveries published A.) Internet Sites B.) Magazines C.) encyclopedias D.) Scient
anygoal [31]

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