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3 years ago

Please help with this!!! Im in a hurry!!

Chemistry

1 answer:

In-s [12.5K]3 years ago

3 0

Answer:

baseball 0.150

pineapple 1.600

full can of... 0.390

inflated balloon 0.003

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How many valence electrons do transition metals have?

alukav5142 [94]

The group/family number is the same number of valance electrons.

4 0

3 years ago

A solution is made by mixing equal masses of methanol, CH4O, and ethanol, C2H6O. Determine the mole fraction of each component t

Serggg [28]

Answer: mole fraction of methanol = 0.590

mole fraction of ethanol = 0.410

Explanation:

We are given:

Equal masses of methanol $CH_4O$ and ethanol $C_2H_6O$ are mixed.

let the mass be x g.

Calculating the moles of methanol in the solution, by using the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}=\frac{xg}{32.04g/mol}$

Calculating the moles of ethanol in the solution, by using the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}=\frac{xg}{46.07g/mol}$

To calculate the mole fraction of methanol, we use the equation:

$\chi_{methanol}=\frac{n_{methanol}}{n_{methaol}+n_{ethanol}}$

$\chi_{methanol}=\frac{\frac{xg}{32.04g/mol}}{\frac{xg}{32.04g/mol}+\frac{xg}{46.07g/mol}}=0.590$

To calculate the mole fraction of ethanol, we use the equation:

$\chi_{ethanol}=\frac{n_{ethanol}}{n_{methaol}+n_{ethanol}}$

$\chi_{ethanol}=\frac{\frac{xg}{46.07g/mol}}{\frac{xg}{32.04g/mol}+\frac{xg}{46.07g/mol}}=0.410$

Thus mole fraction of methanol is 0.590 and mole fraction of ethanol 0.410 in three significant figures.

5 0

2 years ago

Can u give me them please

rewona [7]

Idk duno sowwy OK sorry

8 0

3 years ago

Please help me with this or I may get an F in chemistry :(

umka21 [38]

Answer:

Subconscious - psychic activity just below the level of awareness

Election - the act of electing someone

Explanation:

I hope this helped enough, good luck in chemistry!

8 0

3 years ago

Some students were investigating the

nordsb [41]

Answer:

I am a grade six student but I am very interested in chemistry

Explanation:

I sorry but this is NOT chemistry

5 0

3 years ago

Read 2 more answers