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Varvara68 [4.7K]
3 years ago
15

The concentration of urea in a solution prepared by dissolving 16 g of urea in 20 g of H2OH2O is ________% by mass. The molar ma

ss of urea is 60.0 g/mol. The concentration of urea in a solution prepared by dissolving 16 g of urea in 20 g of is ________% by mass. The molar mass of urea is 60.0 g/mol. 44 80 0.80 0.48 0.44
Chemistry
1 answer:
Arada [10]3 years ago
4 0

Answer:

44

Explanation:

Given that :

Mass of solute = Mass of urea = 16g

Mass of water = 20g

Mass of solution = (mass of solute + mass of solvent) = (mass of urea + mass of water) = (16g + 20g) = 36g

Percentage Mass = (mass of solute / mass of solution) * 100%

Percentage Mass = (16 / 36) * 100%

Percentage Mass = 0.4444444 x 100%

Percentage Mass = 44.44%

Percentage Mass = 44%

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3 years ago
What is the maximum most that can be extracted from 76 g og Cr2O3.
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Answer:

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Explanation:

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3 years ago
5. _______ with the largest atoms and the smallest number of valence electrons and _______ with the smallest atoms and the great
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7 0
3 years ago
Read 2 more answers
The electronic configuration of an element is given below.
Amiraneli [1.4K]

 The statement  which  is true  about  the reactivity  of  element  with          1S²2S²2P⁶3S¹   is

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<u><em>Explanation</em></u>

  • <u><em> </em></u>Element  with     1S²2S²2P⁶3S¹  electron configuration  is    a sodium  metal.
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3 years ago
Calculate the volume of a balloon filled with 0.0940 grams of helium, given the fact that the density of helium is 0.179 g/L
yanalaym [24]

Answer:

Answer: 1.027 x 10^6 g= 1027kg

In this question, you are given the volume of the blimp (2.027×10^5 ft^3) and the density of the gas(0.179g/L). To answer this question, you need to convert the volume unit into liter. The calculation would be: 2.027×10^5 ft^3 x 28.3168L/ft3= 57.398 x 10^5L= 5.74x10^6L

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Explanation:

i hope it helps

6 0
3 years ago
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