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4 years ago

Determine the empirical formula for the compound represented by each molecular formula. c2h4

Chemistry

1 answer:

dybincka [34]4 years ago

6 0

Carbon and hydrogen and the number next to is the number of moles

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What occurs at transform boundary faults and can cause tremendous devastation

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Earthquakes happen at Transform boundaries

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4 years ago

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Below are 5 sets of potential solutes for you to compare. Both members of each pair are very soluble in water. If you had equal

miss Akunina [59]

Answer:

CaCl2, Li2S, AlCl3, AlCl3, K2S

Explanation:

When figuring out which is a better conductor of electricity you want to look at which has the largest yield of dissociated ions.

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4 years ago

A 25.0 liter rigid container has a mixture of 32.00 grams of oxygen gas and 1 point

Ksivusya [100]

Answer:

$P_{T}$ = 2.94 atm

Explanation:

The total pressure ( $P_{T}$ ) in the container is given by:

$P_{T} = P_{O_{2}} + P_{He}$

The pressure of the oxygen ( $P_{O_{2}}$ ) and the pressure of the helium ( $P_{He}$ ) can be calculated using the ideal gas law:

$PV = nRT$

<u>Where</u>:

V: is the volume = 25.0 L

n: is the number of moles of the gases

R: is the gas constant = 0.082 Latm/(Kmol)

T: is the temperature = 298 K

First, we need to find the number of moles of the oxygen and the helium:

$n_{O_{2}} = \frac{m}{M}$

Where m is the mass of the gas and M is the molar mass

$n_{O_{2}} = \frac{32.00 g}{31.998 g/mol} = 1.00 moles$

And the number of moles of helium is:

$n_{He} = \frac{8.00 g}{4.0026 g/mol} = 2.00 moles$

Now, we can find the pressure of the oxygen and the pressure of the helium:

$P_{O_{2}} = \frac{nRT}{V} = \frac{1.00 moles*0.082 Latm/(Kmol)*298 K}{25.0 L} = 0.98 atm$

$P_{He} = \frac{nRT}{V} = \frac{2.00 moles*0.082 Latm/(Kmol)*298 K}{25.0 L} = 1.96 atm$

Finally, the total pressure in the container is:

$P_{T} = P_{O_{2}} + P_{He} = 0.98 atm + 1.96 atm = 2.94 atm$

Therefore, the total pressure in the container is 2.94 atm.

I hope it helps you!

6 0

4 years ago

Which of the following best describes an alkali?

julia-pushkina [17]

Answer:

A. Any substance with a pH above 7.

Explanation:

On the pH scale substances whose value is greater than 7 and less than 14 are termed alkali.

Acids have a pH of less than 7 whereas neutral compounds such as water has pH of 7.

An alkali is any substance that produces excess hydroxyl ion in solutions.
Water soluble bases are known as alkali.
They are usually certain metallic oxides, metallic hydroxides and aqueous ammonia.

7 0

3 years ago

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Which of the following statements is true of an aqueous solution of sodium chloride?

Ilya [14]

Answer:

What are the statements please

Explanation:

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3 years ago