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Ugo [173]
3 years ago
8

How many moles of carbon dioxide gas occupy a volume of

Chemistry
2 answers:
Nat2105 [25]3 years ago
7 0

Answer: 5.42 mol CO2

Explanation: Uses idea gas law

zalisa [80]3 years ago
5 0

Answer:

5.42

Explanation:

I used a calculator

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How would you prepare 1 liter of .030 m copper 2 sulfate pentahydrate?
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Answer is: dissolve 74,9 grams CuSO₄·5H₂O in one liter volumetric flask.
V(CuSO₄·5H₂O) = 1 L.
c(CuSO₄·5H₂O) = 0,30 mol/L.
n(CuSO₄·5H₂O)  = V(CuSO₄·5H₂O) · c(CuSO₄·5H₂O) .
n(CuSO₄·5H₂O) = 1 L · 0,3 mol/L.
n(CuSO₄·5H₂O) = 0,3 mol.
m(CuSO₄·5H₂O) = n(CuSO₄·5H₂O) · M(CuSO₄·5H₂O).
m(CuSO₄·5H₂O) = 0,3 mol · 249,7 g/mol.
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5 0
3 years ago
If 8.87 grams of phosphorus react with 11.43 grams of oxygen, what is the empirical fr pound formed?
777dan777 [17]

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Oxygen 1656.42=3.5 2.5

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When 2.50 g of an unknown weak acid (ha) with a molar mass of 85.0 g/mol is dissolved in 250.0 g of water, the freezing point of
baherus [9]
When dT = Kf * molality * i
                = Kf*m*i
and when molality = (no of moles of solute) / Kg of solvent
                               = 2.5g /250g x 1 mol /85 g x1000g/kg
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by substitution 
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∴ i = 1.166
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∴K = Ca^2/(1-a)
     = (0.1176 * 0.359)^2 / (1-0.359)
     = 2.8x10^-3



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