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rodikova [14]
2 years ago
6

How many moles of oxygen atoms are present in 0.4 moles of oxygen gas​

Chemistry
2 answers:
Kitty [74]2 years ago
8 0

Answer:

Explanation:

Each molecule of O2 is made up of 2 oxygen atoms. So 1 mole of O2 molecules is made up of 2 moles of oxygen atoms. Therefore 1 mole of oxygen gas contains 2 moles of oxygen atoms. And 0.4 moles of oxygen gas contains 0.8 moles of oxygen atoms.

Agata [3.3K]2 years ago
4 0

Answer:

Each molecule of O2 is made up of 2 oxygen atoms. So 1 mole of O2 molecules is made up of 2 moles of oxygen atoms. Therefore 1 mole of oxygen gas contains 2 moles of oxygen atoms. And 0.4 moles of oxygen gas contains 0.8 moles of oxygen atoms.

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What is the pH of a 75.0 mL solution that is 0.045 M in weak base and 0.053 M in the conjugate weak acid
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Answer:

7.07

Explanation:

HA = weak acid = 0.053

A+ = conjugate base = 0.045

Ka = 7.2x10^-8

Ka = [H+][A-]/HA

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[H+] = 7.2x10^-8 x 0.053/0.045

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PH = -[login.48 + log10^-8]

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Answer:

Explanation:

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