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Gwar [14]
3 years ago
15

Pls I need help give away 11 points

Chemistry
1 answer:
Maru [420]3 years ago
7 0

Answer:

The charge is +2

Explanation:

Protons are positive, electrons are negative. 10-8=2.

+2 :)

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Answer:

D, E and F

Explanation:

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About hexa aqua cobalt complexes, the following facts have been observed  

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3 years ago
When 167.2 joules of heat is added to 4.00 grams of water at 10c the resulting temperature is what
Katena32 [7]
Q=mc \Delta T \\\\
Q=168,2J\\
m=4g\\
c=4.184\frac{J}{g^{o}C}\\\\
\Delta T=\frac{Q}{mc}=\frac{167,2J}{4g*4,184\frac{J}{g^{o}C}}=9,99^{o}C\\\\
\Delta T = T_{f}-T_{i}\\\\
9,99^{o}C=T_{f}-10^{o}C\\\\
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So that NaCl is the right answer.

3 0
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