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2 years ago

According to Raoult's law, which statement is false?

Chemistry

1 answer:

irina1246 [14]2 years ago

4 0

Answer:

The answer is (A) Ionic solutes dissociate in solution causing an enhancement of all colligative properties.

Explanation:

When a solute dissociates in solution, it causes changes in colligative properties. In several properties an increase is produced (like in boiling point) whereas in others a decrease is produced (like in melting point and vapor pressure). Colligative properties are these that depend of the number of solute particles there are in a solution. Raoult's law is about vapor pressure of a solvent, and it says that the vapor pressure of a solvent decreases when a solute is added. As greater the number of solute particles in solution, lesser the vapor pressure of the solvent. That is due to the fact that solute particles interact with solvent molecules and avoid its escape to gas phase. So, there are less solute particles in gas phase and consequently its vapor pressure is less.

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PLEASE HELP ME I NEED HELP

Crazy boy [7]

Answer:

5 moles S x (36.02 g S/mole S) = 180.1 grams of S

Explanation:

The periodic table has mass units for every element that can be correlated with the number of atoms of that element. The relationship is known as Avogadro's Number. This number, 6.02x $10^{23}$ , is nicknamed the mole, which scientists found to be a lot more catchy, and easier to write than 6.02x $10^{23}$ . The mole is correlated to the atomic mass of that element. The atomic mass of sulfur, S, is 36.02 AMU, atomic mass units. But it can also be read as 36.02 grams/mole.

This means that 36.02 grams of S contains 1 mole (6.02x $10^{23}$ ) of S atoms.

This relationship holds for all the elements. Zinc, Zn, has an atomic mass of 65.38 AMU, so it has a "molar mass" of 65.38 grams/mole. ^5.38 grams of Zn contains 1 mole of Zn atoms.

And so on.

5.0 moles of Sulfur would therefore contain:

(5.0 moles S)*(36.02 grams/mole S) = 180.1 grams of S

Note how the units cancel to leaves just grams. The units are extremely helpful in mole calculations to insure the correct mathematical operation is done. To find the number of moles in 70 g of S, for example, we would write:

(70g S)/(36.02 grams S/mole S) = 1.94 moles of S. [Note how the units cancel to leave just moles]

4 0

1 year ago

Nah I'm gonna fail this quiz help please

Eva8 [605]

Answer:

It has 2 eyes

Explanation:

Quantitive observation means that it is facts based of numbers, therefore you can count how many eyes it has, but not that it has red eyes

4 0

2 years ago

A fusion reaction takes places between carbon and another element. Neutrons are realeased, and a different element is formed. Th

Ymorist [56]

Hydrogen is the new element

6 0

3 years ago

How many atoms in the pictured molecule can form hydrogen bonds with water molecules? there is a ball-and-stick model of nh2ch2c

MariettaO [177]

The correct answer would be the third option. There would be two atoms that can form hydrogen bonds with the water molecules from the molecule NH2CH2CH2OH. The atoms O and N could make hydrogen bonds with H. Hydrogen bond is an intermolecular force that is a dipole-dipole interaction between a hydrogen and an atom of O, F and N.

4 0

2 years ago

How many atoms are in 9.8 moles of NaCl?

k0ka [10]

Answer:

a lot but im pretty sure if u just take avogadros number and multiply it by 9.8 u get the answer

Explanation:

4 0

2 years ago