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2 years ago

Which answer choice is a way to speed up how fast a solute can dissolve in a solvent? A: heat

Chemistry

1 answer:

Lyrx [107]2 years ago

6 0

A heat is the answer I think

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What is the barycenter of the moon and the earth

kirill [66]

Answer:

The barycenter is the point in space around which two objects orbit. For the Moon and Earth, that point is about 1000 miles (1700 km) beneath your feet, or about three-quarters of the way from the Earth's center to its surface.

Explanation:

6 0

2 years ago

A 1.450 g sample of an unknown organic compound , X, is dissolved in 15.0 g of toluene

muminat

Answer:

Molecular weight of the compound = 372.13 g/mol

Explanation:

Depression in freezing point is related with molality of the solution as:

$\Delta T_f = K_f \times m$

Where,

$\Delta T_f$ = Depression in freezing point

$K_f$ = Molal depression constant

m = Molality

$\Delta T_f = K_f \times m$

$1.33 = 5.12 \times m$

m = 0.26

Molality = $\frac{Moles\ of\ solute}{Mass\ of\ solvent\ in\ kg}$

Mass of solvent (toluene) = 15.0 g = 0.015 kg

$0.26 = \frac{Mole\ of\ compound}{0.015}$

Moles of compound = 0.015 × 0.26 = 0.00389 mol

$Mol = \frac{Mass\ in\ g}{Molecular\ weight}$

Mass of the compound = 1.450 g

$Molecular\ weight = \frac{Mass\ in\ g}{Moles}$

Molecular weight = $\frac{1.450}{0.00389} = 372.13\ g/mol$

4 0

2 years ago

Select three of the hard skills that a social worker needs.

vladimir1956 [14]

Answer:

active listening

compassion

understanding resources

Explanation:

from my own opinion

8 0

2 years ago

What would happen to the rate of a reaction with rate law rate = k [NO]2[Hz] if

leonid [27]

The rate of a reaction with this rate law would increase by a factor of 4 if NO concentration were doubled.

8 0

2 years ago

How do you think a redox reaction works?

11Alexandr11 [23.1K]

Any chemical reaction in which the oxidation number of an atom,molecule,or ion changes by gaining or losing an electron

3 0

2 years ago