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suter [353]
3 years ago
15

What is full octet composed of?​

Chemistry
1 answer:
Tems11 [23]3 years ago
6 0
Answer : Eight electrons
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Abel and his family are going on a road trip from Rhode Island to Alabama. The drive will take 18 hours. If they leave Rohde Isl
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Which of the following would you predict to have a positive value for º ?
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Can someone please help 7-10 with some work shown a bit , pleaseeeeeee
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3 years ago
What are alkali metals
jeyben [28]

Answer:

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7 0
3 years ago
Read 2 more answers
In the laboratory, a student combines 28.3 mL of a 0.489 M manganese(II) acetate solution with 12.5 mL of a 0.339 M manganese(II
Eddi Din [679]

Answer:

M = 0.441 M

Explanation:

In this case, we have two solutions that involves the Manganese II cation;

We have Mn(CH₃COOH)₂ and MnSO₄

In both cases, the moles of Mn are the same in reaction as we can see here:

Mn(CH₃COO)₂ <-------> Mn²⁺ + 2CH₃COO⁻

MnSO₄ <------> Mn²⁺ + SO₄²⁻

Therefore, all we have to do is calculate the moles of Mn in both solutions, do the sum and then, calculate the concentration with the new volume:

moles of MnAce = 0.489 * 0.0283 = 0.0138 moles

moles MnSulf = 0.339 * 0.0125 = 0.0042 moles

the total moles are:

moles of Mn²⁺ = 0.0138 + 0.0042 = 0.018 moles

Finally the concentration: 12.5 + 28.3 = 40.8 mL or 0.0408 L

M = 0.018 / 0.0408

M = 0.441 M

This would be the final concentration of the manganese after the mixing of the two solutions

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4 years ago
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