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Lyrx [107]
2 years ago
11

A mixture of C3H8C3H8 and C2H2C2H2 has a mass of 2.8 gg . It is burned in excess O2O2 to form a mixture of water and carbon diox

ide that contains 1.4 times as many moles of CO2CO2 as of water.
Find the mass of C2H2C2H2 in the original mixture.

Express your answer to two significant figures and include the appropriate units.
Chemistry
1 answer:
julsineya [31]2 years ago
8 0

Answer:

gghhgyuhuyyugffygcggyy

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Phosphorus has a low melting point because the intramolecular forces holding it together is London Dispersion Forces.

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If a sample of HF gas at 694.9 mmHg has a volume of 3.463 Land the volume is changed to 5.887 L, then what will be the new press
VARVARA [1.3K]

Answer:

\large \boxed{\text{381.7 mmHg}}

Explanation:

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Calculation:

\begin{array}{rcl}p_{1}V_{1} & = & p_{2}V_{2}\\\text{648.9 mmHg} \times \text{3.463 L} & = & p_{2} \times\text{5.887 L}\\\text{2247.1 mmHg} & = & 5.887p_{2}\\p_{2} & = & \dfrac{\text{2247.1 mmHg}}{5.887}\\\\& = &\textbf{381.7 mmHg}\\\end{array}\\\text{The new pressure of the gas is $\large \boxed{\textbf{381.7 mmHg}}$}

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