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alissalhenry
31.10.2020 •
Chemistry
Can someone help me please
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Ответ:
Strange question. All the answers are D
Explanation:
I don't exactly know how you should answer this. I can find the charge on Chromium. The only hope is that they are all the same.
[Cr(OH)_-6]^-3
x - 6 = -3 Add 6
x = -3 + 6
x = 3
CrO4 ^-2
x - 4*2 = - 2 add 8
x = -2 + 8
x = 6
Water has no effect on the charge. The chromium has a charge of +2
Ответ:
Explanation:
clinical laboratory test results are a very important parameter in diagnosis, monitoring and screening. 70-80 ... it is possible to determine whether you can interpret the test result as being ...