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Kazeer [188]
3 years ago
6

How many moles of O2 are needed to react completely with 3 mol of H2S?

Chemistry
1 answer:
blondinia [14]3 years ago
5 0

i think there are three

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At a certain temperature, the vapor pressure of pure benzene ‍ is atm. A solution was prepared by dissolving g of a nondissociat
erastova [34]

Answer:

Molar mass of solute: 300g/mol

Explanation:

<em>Vapor pressure of pure benzene: 0.930 atm</em>

<em>Assuming you dissolve 10.0 g of the non-volatile solute in 78.11g of benzene and vapour pressure of solution was found to be 0.900atm</em>

<em />

It is possible to answer this question based on Raoult's law that states vapor pressure of an ideal solution is equal to mole fraction of the solvent multiplied to pressure of pure solvent:

P_{sln} = X_{solvent}P_{solvent}^0

Moles in 78.11g of benzene are:

78.11g benzene × (1mol / 78.11g) = <em>1 mol benzene</em>

Now, mole fraction replacing in Raoult's law is:

0.900atm / 0.930atm = <em>0.9677 = moles solvent / total moles</em>.

As mole of solvent is 1:

0.9677× total moles = 1 mole benzene.

Total moles:

1.033 total moles. Moles of solute are:

1.033 moles - 1.000 moles = <em>0.0333 moles</em>.

As molar mass is the mass of a substance in 1 mole. Molar mass of the solute is:

10.0g / 0.033moles = <em>300g/mol</em>

8 0
3 years ago
Consider the following reversible reaction.
Marina86 [1]

Answer:

B is the correct option

Explanation:

K= the ratio of product of concentration of products to the product of concentration of reactants raised to power equal to their cofficients.

7 0
3 years ago
Read 2 more answers
Please Help Me with this
Zina [86]

Answer:

compared to sodium, silicon has a higher ionization energy meaning it takes more energy to remove electrons.

Explanation:

hope this helps

<u>can u please give me and Brainlist</u>

5 0
2 years ago
An advertising sign gives off red and green light. a. Which light has higher energy? b. One of the colors has a wavelength of 68
alekssr [168]
A would be right sorry if wrong

4 0
3 years ago
How many protons are there in 20.02 mol of neon (Ne)?
Anettt [7]
In order to determine the number of protons in 20.02 mol of Ne, we use Avogadro's number to convert the number of moles to number of atoms, 1 mol = 6.022 x 10^23 atoms. From there, we must know the number of protons in a Neon atom, which is 10. Thus, the formula will be:
(20.02 mol Ne)x(6.022 x 10^23 atoms/mol)x(10 protons/1 atom Ne) = 1.2056 x 10^26 protons 


7 0
3 years ago
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