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Oksi-84 [34.3K]
3 years ago
6

Why we add PH10 When we determine the zn ion​

Chemistry
1 answer:
KIM [24]3 years ago
8 0

Answer:

to make it basic from acidic

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The isotope chromium-51 has a half-life of 28 days. if the original sample had a mass of 28.0 grams, what mass of the chromium-5
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Check the attached file for the answer.

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4 years ago
Chemical equation of 2 atoms of potassium metal react with 2 molecules of liquid water to produce 2 molecules of Solid potassium
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2K + 2H2O -----> 2KOH + H2

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4 years ago
How many grams are in 9.97 moles of Be(NO3)2?<br> Use two digits past the decimal for all values.
Simora [160]

Answer:

1,869.97 grams of Be(NO3)2

Explanation:

Be(NO3)2 = Be  N2  O6

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therefore Be(NO3)2 gives you 187.56g in one mole

so 9.97 moles means there is 9.97 times more

9.97mole Be(NO3)2 * 187.56g Be(NO3)2/1mole Be(NO3)2 = 1,869.97g of Be(NO3)2

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3 years ago
When two or more refrigerants are mixed, what must be done with the mixture?
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