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3 years ago

Ummmm i don’t need help on the question i just need help on how i drag tools with my chrome book i’m stuck i tried everything

Chemistry

1 answer:

Illusion [34]3 years ago

8 0

Answer:

Try using the touch screen and make sure you have not right clicked on anything.

Explanation:

Hope this helps!

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How many molecules of CH4 are in 48.2 g of this compound? A) 2.00 x 1023 B) 5.00 x 10-24 C)1.81 x 1024 D) 4.00 E) 4.64 x 1026 10

Tasya [4]

<u>Answer:</u> The correct answer is Option C.

<u>Explanation:</u>

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Given mass of methane = 48.2 g

Molar mass of methane = 16 g/mol

Putting values in above equation, we get:

$\text{Moles of }CH_4=\frac{48.2g}{16g/mol}=3.0125mol$

According to mole concept:

1 mole of compound contains $6.022\times 10^{23}$ number of molecules.

So, 3.0125 moles of methane will contain = $3.0125\times 6.022\times 10^{23}18.141\times 10^{23}=1.81\times 10^{24}$ number of molecules.

Hence, the correct answer is Option C.

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3 years ago

How many grams is 10 moles of H2O?

Elan Coil [88]

Answer:

So, 10 mole of water will weigh (18x10) = 180g.

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3 years ago

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3 years ago

Jamal was riding his bike home at a speed of 12 mph. On his trip out, he had traveled 8 miles away from his house. He has been t

NikAS [45]

Jamal is 2 miles away from his home.

Option B.

<h3><u>Explanation:</u></h3>

The initial distance of Jamal from his home is 8 miles. He needs to return home from his trip.

The speed that Jamal kept was constant for 30minutes and he drove at a speed for 12 miles per hour.

Speed of Jamal = 12 mph.

Time of travel = 30minutes =0.5 hours.

So distance traveled by Jamal = $12 \times0.5$ miles. = 6miles.

Initial distance of Jamal = 8 miles.

So final distance = $8-6$ miles = 2miles.

So Jamal is 2 miles away from his home.

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3 years ago

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When swimmers get out of the pool and sit in the sun, their wet skin dries quickly. What happens to the water?

I am Lyosha [343]

Answer:

It evaporates and moves into the air.

Explanation:

When water is left out for a while, it evaporates into the air! :)

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3 years ago

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