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Furkat [3]
3 years ago
13

What is the percent of Cr in Cr2O3

Chemistry
2 answers:
IgorLugansk [536]3 years ago
5 0
The percentage of Chromium in Chromium Oxide is calculated as follow,

Step 1:
           Calculate Molar mass of Cr₂O₃,
Cr = 51.99 u
O = 16 u
So,
     2(51.99) + 3(16) = 103.98 + 48 = 151.98 u

Step 2:
          Secondly divide molar mass of only chromium with total mass of Cr₂O₃ and multiply with 100.
i.e.
                   = \frac{103.98}{151.98} × 100
                   
                   = 68.41 %
So, the %age composition of chromium in chromium oxide is 68.41 %.
lys-0071 [83]3 years ago
4 0

Answer:

68.41

Explanation:

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3 years ago
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Explanation:

4 0
3 years ago
Which of the following molecules is polar?
alexandr1967 [171]

Answer

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5 0
3 years ago
In water, Vanillin, C8H8O3, has a solubility of 0.070 moles of vanillin per liter of solution at 25C. What will be produced if 5
Rufina [12.5K]

Answer:

The full amount (5.00 g) will be dissolved in 1 L of water at 25°C.

Explanation:

The molecular weight (MW) of Vanillin (C₈H₈O₃) is calculated from the chemical formula as follows:

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7 0
3 years ago
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3) no substitutions

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Therefore, the name is pentane.
4 0
4 years ago
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