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3 years ago

Please help me with this! I'd appreciate it. Thanks so much! :D

Chemistry

1 answer:

Setler [38]3 years ago

3 0

Answer:

It is the second option.

Explanation:

The conversion factor is:

I kPa = 7.50062 Torr.

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Determine the freezing point of a water solution of fructose (C6H12O6) made by dissolving 92.0 g of fructose in 202 g of water.

Naya [18.7K]

Answer:

THE FREEZING POINT OF A WATER SOLUTION OF FRUCTOSE MADE BY DISSOLVING 92 g OF FRUCTOSE IN 202g OF WATER IS -4.70 ◦C

Explanation:

To calculate the freezing point of a water solution of fructose,

1. calculate the molar mass of Fructose

( 12 * 6 + 1*12 + 16*6) =72 + 12 +96 = 180 g/mol

2. calculate the number of moles of fructose in the solution

number of moles = mass / molar mass

n = 92 g / 180 g/mol

n = 0.511 moles.

3. calculate the molarity of the solution

molarity = moles / mass of water in kg

molarity = 0.5111 / 202 g /1000 g

molarity = 0.5111 / 0.202

molarity = 2.529 M

4. calculate the change in the freezing point of pure solvent and solution ΔTf

ΔTf = Kf * molarity of the solute

Kf = 1.86 ◦C/m for water

ΔTf = 1.86 * 2.529

ΔTf = 4.70 C

5. the freezing point is therefore

0.00 ◦C - 4.70 ◦C = -4.70 ◦C

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3 years ago

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When you live in a cold place and you're planning a vacation for February, are you interested in a location's weather or climate

Dahasolnce [82]

Answer:

It depends on what type of environment you are looking for. If you are looking for a warmer climate, warm weather and temperature is important. If you are looking for a cooler climate, you should look for colder weather and temperature. Humidity, geographical location, plant growth and foliage and elevation are also important when looking for a place to vacation.

Explanation:

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3 years ago

Wie geht diese Aufgabe?

bogdanovich [222]

Answer:

1u1u2j2jj and her family

Explanation:

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3 years ago

A sample of Element X is found to contain 67.25% of isotope type 1 (85.91) and 32.75% of isotope type 2 (87.91). Calculate the a

KengaRu [80]

Answer:

The average atomic mass is 86.565

Explanation:

An element's average atomic mass is the sum of the products of the masses of the isotopes of the element and their percentage abundance divided by 100

The average atomic mass of the Element X is given as follows;

Isotope type 1 (85.91) ×

Isotope ${}$ Abundance (%) Mass /100 Portion of average mass

Type 1 ${}$ 67.25 × 85.91 ÷ 100 57.774475

Type 2 ${}$ 32.75 × 87.91 ÷ 100 28.790525

${}$ Average atomic mass = 86.565

The average atomic mass = 86.565.

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3 years ago

Do metals dissolve in water

Nady [450]

yes

include sodium and potassium, dissolve instantly and dramatically in plain water — no stronger acid is needed. The metals react violently with water, releasing and igniting hydrogen gas and causing an explosion.

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3 years ago

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