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strojnjashka [21]
3 years ago
14

How many moles are in 1.50x10^23 molecules of NH3

Chemistry
1 answer:
Rom4ik [11]3 years ago
6 0
The answer is 0.25 moles because one mole of NH3 would have apporximately 6.02X10^23 molecules
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Which of the following statements best compares the pH value of H3PO4 and HCl?
wel

Answer:

Option B. Both have a pH less than 7, but H3PO4 has a lower pH than HCl

Explanation:

Those are acid, so the pH would be < 7.

H₃PO₄ is a weak acid with 3 dissociations

HCl is a strong acid.

pH depends on [H]⁺

H₃PO₄  →  3H⁺  +  PO₄⁻³

HCl →  H⁺  +  Cl⁻

If both acid, have the same concentration, [H⁺]H₃PO₄ > [H⁺]HCl, that's why the pH from the phosphoric will be lower.

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3 years ago
A container of gas is initially at 0.25 atm and 0 ˚C. What will the pressure be at 125 ˚C?
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Answer:

0.37atm

Explanation:

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Final temperature  = 125°C  = 125 + 273  = 398K

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Final pressure  = ?

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To solve this problem, we use a derivative of the combined gas law;

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3 years ago
The most negative electron affinity is most likely associated with which type of atoms?
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Explanation:

elements are based on electrical conductivity

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4 years ago
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Answer:

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Explanation:

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3 years ago
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