3 years ago

WILL GiVe bRaInLiEsT, 5 sTaR, AnD tHaNkS!!!!

Chemistry

1 answer:

Nataliya [291]3 years ago

5 0

The answer is more protons than electrons.

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How many moles are equal to 7.62 x 1025 molecules lithium hydroxide

ycow [4]

No of moles:-

$\\ \tt\longmapsto \dfrac{No\:of\:atoms}{Avagadro's\; number}$

$\\ \tt\longmapsto \dfrac{7.62(10^{25})}{6.022(10^{23})}$

$\\ \tt\longmapsto 126.5mol$

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3 years ago

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ICE Princess25 [194]

Answer:

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In a mixture of 2 ideal gases, A and B, PA = 0.2PB, what is the mole fraction of A?

Alborosie

Answer:

0.1667

Explanation:

Hello,

Dalton's law defines:

$y_i=\frac{P_i}{P_T}$

A total pressure is:

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So, for A (solving for $P_A$ in the previous equation, we get:

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Since $P_A=0.2P_B$ , we obtain:

$y_A=\frac{P_A}{P_A+P_A/0.2}\\y_A=\frac{1}{6}\\y_A=0.1667$ }

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