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lubasha [3.4K]
3 years ago
8

PLZ HELP IM GIVING 50 FRICKING POINTS. NO WRONG ANSWERS PLZ

Chemistry
1 answer:
Liula [17]3 years ago
3 0

Answer:

I think it's B

Explanation:

I dont have much experience with the periodic table, but I just think its B.

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Use the balanced equation given below to solve the following problem; Calculate the volume in liters of CO produced by the react
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Answer: 40.3 L

Explanation:

To calculate the moles :

\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}

\text{Moles of} Sb_2O_3=\frac{175g}{291.5g/mol}=0.600moles

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According to stoichiometry :

1 moles of Sb_2O_3 produces = 3 moles of CO

Thus 0.600 moles of Sb_2O_3 will produce=\frac{3}{1}\times 0.600=1.80moles  of CO

Volume of CO=moles\times {\text {Molar volume}}=1.80moles\times 22.4L/mol=40.3L

Thus 40.3 L of CO is produced.

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What is the vapor pressure of an aqueous solution that has a solute mole fraction of 0.1000? The vapor pressure of water is 25.7
mafiozo [28]

Answer:

χsolvent = 1.0000 - 0.1000 = 0.9000

Use Raoult's Law:

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x = (0.900) (25.756)

x = 23.18 mmHg (to four sig figs)

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What is the specific heat of a substance if 1450 calories are required to raise the temperature of a 240g sample by 20℃?
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specific heat= 0.240×1450×20= 6960 J/kg°C

hope it helps!

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