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3 years ago

Which aqueous solution has the highest boiling point?

Chemistry

1 answer:

MissTica3 years ago

7 0

Answer:

All three solutions have the same boiling point.

Explanation:

Elevation in boiling point is a colligative property. A colligative property depends upon the number of solute molecules irrespective of nature or molecular weight etc.

As all the given solutes (in all the three solutions) are non ionic (will not dissociate into ions) so with same molality (moles per unit Kg) they will have same number of molecules. And thus all the three aqueous solutions will have same boiling point.

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How many atoms of calcium, Ca would be equal to 5.472 X 104 moles Ca?

Montano1993 [528]

Answer:
3.29 × 10²⁸ Atoms

Solution:
Moles and Number of atoms are related to each other as,

Moles = Number of Atoms / 6.022 × 10²³ ------- (1)

Data Given;
Moles = 5.472 ×10⁴

Number of Atoms = ?

Solving eq. 1 for Number of Atoms,

Number of Atoms = Moles × 6.022 × 10²³

Putting values,

Number of Atoms = 5.472 ×10⁴ mol × 6.022 × 10²³ atoms.mol⁻¹

Number of Atoms = 3.29 × 10²⁸ Atoms

5 0

3 years ago

Which of the following species cannot act as a Lewis base?

gayaneshka [121]

Answer:

NH4+

Explanation:

A Lewis base is a substance with the ability to share or give pairs of electrons.

The NH4 + ammonium ion donates a proton, therefore the ammonium ion is a Lewis acid.

6 0

3 years ago

In a chemical reaction, the mass of the products is equal to __. 11

Deffense [45]

The answer for that is 16, math right?

7 0

3 years ago

If the copper cube had a mass of 28.7 grams and a volume of 3.2 mL, what would its density be?

Otrada [13]

Answer:

ρ=m÷v

=28.7÷3.2

≈8.97 g/m³

3 0

3 years ago

In the following reaction, how many grams of silver can be produced from 49.1 g copper?

notsponge [240]

166.4 g Ag grams of silver can be produced from 49.1 g of copper.

A mole is a very important unit of measurement that chemists use. A mole of something means you have 602,214,076,000,000,000,000,000 of that thing, like how having a dozen eggs means you have twelve eggs.

$1 mol Cu + 2 mol AgNO_3$ → $2 mol Ag + 1 mol Cu(NO3)2$

63.55 g Cu —> 2 x 107.688 g Ag

63.55 g Cu gives 215.376 g of Ag

So, 49.1 g Cu —> $\frac{215.376 g X 49.1 g}{63.55 g}$

= 166.4 g Ag

Hence, 166.4 g Ag grams of silver can be produced from 49.1 g of copper.

Learn more about moles here:

brainly.com/question/26416088

#SPJ1

5 0

2 years ago