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Yakvenalex [24]
4 years ago
7

*Class work* .

Chemistry
1 answer:
qwelly [4]4 years ago
8 0
1) 12m x 200N=2400J (J) is the unit for workdone

2) 120 x 3 = 360W
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Calculate the mass percent of titanium in the mineral ilmenite, FeTiO3. What mass of ilmenite (in grams) is required if you wish
muminat
We are given the mineral ilmenite with a molecular formula of FeTiO3. The molar mass of the compound is equal to 151.72 g/mol. The percent titanium thus is 31.55 percent.when 750 grams of titanium is present, the mass of ilmenite is equal to 2377.18 grams
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How does the periodic table tell me if a element is solid, liquid, gas, or man made?
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Explanation:

i really hope this helps:)

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3 years ago
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A mixture of two compounds, A and B, was separated by extraction. After the compounds were dried, their masses were found to be:
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The percent recovery from re crystallization for both compounds A and B is 69.745 and 81.44 % respectively.

Explanation:

Mass of compound A in a mixture  = 119 mg

Mass of compound A after re-crystallization = 83 mg

Percent recovery from re-crystallization :

\frac{\text{Mass after re-crystallization}}{\text{Mass before re-crystallization}}\times 100

Percent recovery of compound A:

\frac{83 mg}{119 mg}\times 100=69.74\%

Mass of compound B in a mixture  = 97 mg

Mass of compound B after re-crystallization = 79 mg

Percent recovery of compound B:

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