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3 years ago

Describe a procedure to separate a mixture of sugar, black pepper, and pebbles.

1 answer:

8 0

1) As pebbles are solid compounds, pour it into filter, it would extract every particle of pebbles.

2) Then, with the use of filter, we need to extract pepper from the compound.

3) Now, Add water 'cause we need to dissolve salt with it.

Hope this helps!

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An exothermic reaction is what<br> energy.

leonid [27]

Answer:

An exothermic reaction releases energy. Endothermic takes in energy.

Explanation:

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3 years ago

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In a mixture of hydrogen and nitrogen gases, the mole fraction of nitrogen is 0.333. If the partial pressure of hydrogen in the

notka56 [123]

Answer:

$P_T=112.4torr$

Explanation:

Hello there!

In this case, since these problems about gas mixtures are based off Dalton's law in terms of mole fraction, partial pressure and total pressure, we can write the following for hydrogen, we are given its partial pressure:

$P_{H_2}=x_{H_2}*P_T$

And can be solved for the total pressure as follows:

$P_T=\frac{P_{H_2}}{x_{H_2}}$

However, we first calculate the mole fraction of hydrogen by subtracting that of nitrogen to 1 due to:

$x_{H_2}+x_{N_2}=1\\\\x_{H_2}=1-0.333=0.667$

Then, we can plug in to obtain the total pressure:

$P_T=\frac{75.0torr}{0.667}\\\\P_T=112.4torr$

Regards!

4 0

3 years ago

What is another name for the acid dissociation constant?

sveticcg [70]

A. Ionization constant

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3 years ago

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Each carbon atom of benzene is involved in two ________

coldgirl [10]

Answer:

Benzene is a combination of carbon and hydrogen atoms. The hybridization is sp2 type. During the hybridization of benzene, each carbon atom forms different bonds with two other similar carbon atoms instead of just one.

hope it helps!

please mark as the brainliest!

7 0

3 years ago

The density of ethanol, a colorless liquid that is commonly known as grain alcohol, is 0.798 g/mL Calculate the mass of 205 mL o

katovenus [111]

Answer:

Mass of 205 mL of the liquid is 164 g

Explanation:

We know, $density=\frac{mass}{volume}$