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Lilit [14]
3 years ago
12

What is the total mass of three diamonds with masses of 14.2 grams, 8.73 grams, and 0.912 grams?

Chemistry
2 answers:
strojnjashka [21]3 years ago
8 0
It should be 14.3 +8.73 +0.912 =23.942
grandymaker [24]3 years ago
7 0
Your answer would be 23.842
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professor190 [17]

Answer:

4.35 * 10^-8 M

Explanation:

Since the concentration of the hydronium ion= 2.3 X 10^-7 M

And we know that;

[H3O^+] [OH^-] = 1 * 10^-14

[H3O^+]  = concentration of the hydronium ion

[OH^-] = concentration of the hydroxide ion

So;

[OH^-] =1 * 10^-14/[ H3O^+]

But [H3O^+] = 2.3 X 10^-7 M

[OH^-] = 1 * 10^-14/2.3 X 10^-7

[OH^-] = 4.35 * 10^-8 M

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2 years ago
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<span>Hope this helps you with your question. Don’t hesitate to ask here in Brainly.</span>

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2 years ago
How many g of Fe2O3 will be produced from 132.7 g of o2
zhuklara [117]

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4 0
2 years ago
1.2 L sample of gas is determined to contain 0.5 moles of nitrogen. At the same temperature and pressure, how many moles of gas
hram777 [196]

A 20 L sample of the gas contains 8.3 mol N₂.

According to <em>Avogadro’s Law,</em> if <em>p</em> and <em>T</em> are constant

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<em>n</em>₂ = <em>n</em>₁ × <em>V</em>₂/<em>V</em>₁

___________

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∴<em>n</em>₂ = 0.5 mol × (20 L/1.2 L) = 8.3 mol

4 0
3 years ago
While a certain isotope decays, it emits photons. What kind of decay is happening?
gizmo_the_mogwai [7]
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6 0
2 years ago
Read 2 more answers
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