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Fittoniya [83]
3 years ago
10

When a solution is diluted, what is the relationship of the number of moles of solute in the more concentrated initial volume of

solution to the number of moles of solute in the less concentrated final volume of solution? A. The ratio of the numbers is directly proportional to the two volumes. B. The ratio of the numbers is inversely proportional to the two volumes. C. The number of moles of solute in the more concentrated initial volume is always greater. D. The number of moles of solute in the less concentrated final volume is always greater. E. The number of moles of solute in both solutions is the same.
Chemistry
1 answer:
zhuklara [117]3 years ago
6 0

Answer:

E. The number of moles of solute in both solutions is the same.

Explanation:

The dilution of a solution consist in increase the volume of solution decreasing, thus, the concentration of the solution. The moles of solute doesn't change in a dilution process.

Thus, when a solution is diluted, the relationship of the number of moles of solute in the more concentrated initial volume of solution to the number of moles of solute in the less concentrated final volume of solution is that:

E. The number of moles of solute in both solutions is the same. TRUE.

I hope it helps!

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PlEASE HELP! 40!
podryga [215]

Answer:

moles Na = 0.1114 g / 22.9898 g/mol=0.004846

moles Tc = 0.4562g /98.9063 g/mol=0.004612

mass O = 0.8961 - ( 0.1114 + 0.4562)=03285 g

moles O = 0.3285 g/ 15.999 g/mol=0.02053

divide by the smallest

0.02053/ 0.004612 =4.45 => O

0.004846/ 0.004612 = 1.0 => Tc

to get whole numbers multiply by 2

Na2Tc2O 9

Explanation:

Hope it right hope it helps

5 0
3 years ago
PLEASE ANSWERRRRRRRRRR
Phantasy [73]
The answer for your question is D
6 0
3 years ago
Gasoline is a mixture of compounds. A gasoline sample was found to be 2.851% (by mass) octane (C₈H₁₈). 482.6 g of gasoline is co
Pani-rosa [81]

Answer:

See below.

Explanation:

The mass of octane in the sample of gasoline is 0.02851 * 482.6 =  13.759 g of octane.

The balanced equation is:

2C8H18(l)  +  25O2(g) ---->  16CO2(g)  +   18H2O(g)

From the equation, using  atomic masses:

228.29 g of  octane forms 704 g of CO2 and 324.3 g of H2O

So the mass of CO2 formed from the combustion of 13.759 g of octane = (704 * 13.759) / 228.29

= 42.43 g of CO2.

Amount of water = 324.3 * 13.759) / 228.29

= 19.55 g of H2O.

5 0
3 years ago
A substance with two or more different types of atoms chemically bonded together is called....
Slav-nsk [51]

Answer:

D

Explanation:

7 0
3 years ago
What is the name given to an ion that has lost electrons? someone help me please D:
marin [14]

The name given to an ion that has lost electrons is cation. Details about cations can be found below.

<h3>What is a cation?</h3>

A cation is a positively charged ion i.e. the one that would be attracted to the cathode in an electrolytic procedure.

Generally, an ion is an electrically charged atom. An ion can either be positively charged or negatively charged. The latter is called an anion while the former is called a cation.

A cation is formed when an atom loses electrons to become positively charged while an anion is formed when an atom accepts electrons to become negatively charged.

Therefore, it can be said that the name given to an ion that has lost electrons is cation.

Learn more about cation at: brainly.com/question/1488567

#SPJ1

7 0
2 years ago
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