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andrey2020 [161]
3 years ago
9

I need help with the first question

Chemistry
1 answer:
gregori [183]3 years ago
7 0
Zn⁰ ----> Zn⁺²   +   2e⁻ -  oxidation
Hg⁺² + 2e⁻ ----> Hg⁰ - reduction

Zn loses 2 moles of electrons , and Hg gains 2 mole of electrons.
So, number of moles of electrons gained and lost during reaction is equal.

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85g=kg?<br> Unit conversion.
Paraphin [41]

Answer:

0.085 kg

Explanation:

1 g=0.001 kg  OR 1 kg=1000 g

 so \frac{85}{1000}=0.085 kg

3 0
3 years ago
2. Calculate the concentration (in molarity) of a NaOH solution if 25.0 mL of the solution are needed to neutralize 17.4 mL of a
zimovet [89]

Answer:

0.217 M NaOH

Explanation:

M1V1 = M2V2

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V1 = 17.4 mL HCl

M2 = ?

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Solve for M2 --> M2 = M1V1/V2

M2 = (0.312 M)(17.4 mL) / (25.0 mL) = 0.217 M NaOH

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3 years ago
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Salsk061 [2.6K]

Answer:

Mainly It would start out on Jupiter, Then Saturn, Uranus, and finally Neptune. Maybe even the orginal planet that got ejected out of the solar system by Jupiter, Planet 9.

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8 0
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