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earnstyle [38]
3 years ago
15

Question 1 (1 point)

Chemistry
1 answer:
Aneli [31]3 years ago
6 0

Answer:

Question 1. Solubility

Question 2. 18%

Question 3. 60%

Explanation:

Question 1.

Molarity and mass percent are both, sort of concentrations for solutions.

They involve the amount of solute respect to the solution.

Solubility is the ability of a substance to dissolve in another. This capacity can be expressed in moles per liter.

Question 2.

Percent concentration which is also the same as mass percent, shows the mass of solute in 100 g of solution.

In this case, for 18 g of salt which are contained in 100 g of solution, the percent concentration is 18%

Question 3.

Solute: 45 g of sugar

Solvent: 30 g of water

Solution: 75 g of solution

Percent sugar in the solution → (45 g / 75g) . 100 = 60%

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Answer:

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The element antimony has two stable isotopes, antimony-121 with a mass of 120.90 amu and antimony-123 with a mass of 122.90 amu.
NARA [144]

Answer:

antimony-121 has the highest percent natural abundance

Explanation:

percent natural abundance;

121.76 = 120.90 x + 122.90 (1 - x)

121.76 = 120.90 x + 122.90 - 122.90x

121.76 = -2x + 122.90

121.76 - 122.90 = -2x

x= 121.76 - 122.90/ -2

x= 0.57

Where x and 1 - x refers to the relative abundance of each of the isotopes

Percent natural abundance of antimony-121 = 57 %

Percent natural abundance of antimony-123 = (1 - 0.57) = 43%

Let us remember that isotopy refers to a phenomenon in which atoms of the same element have the same atomic number but different mass numbers. This results from differences in the number of neutrons in atoms of the same element.

We can clearly see that antimony-121 has the highest percent natural abundance.

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The process of fermentation involves chemical reactions that convert solid glucose (C6H12O6) into aqueous ethanol and carbon dio
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There are 6 atoms of C on the left side and 5 atoms on the right side. It can be balance by putting 2 in front of CO2 as shown below:

C6H12O6 —> 2C2H5OH + 2CO2

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