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2 years ago

The electrical conductivity of an aqueous solution depends on the concentration

1 answer:

6 0

<em>The concentration, mobility, and valence state of the ionized species in a solution, as well as the temperature at which the measurement is done, all have a role. The conductivity of water increases with the concentration of ions in it.</em>

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Amit is going to guess on all 20 questions of his multiple-choice test. Each question on the test has 4 answer options, and only

mr_godi [17]

Answer:

B. Close to 5 but not exactly 5 questions is the correct answer.

Explanation:

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3 years ago

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If $535 is invested at an interest rate of 6% per year and is compounded continuously, how much will the investment be worth in

Norma-Jean [14]

The Amount of investment equals $974.83.

The continuous compound interest helps to calculate an investment that are reinvested into the balance over a infinite number of periods.

The formula for continuous compound interest is A=P^e^(r*t)

Amount of investment = $535 * e^(6%*10)

Amount of investment = $535 * 1.82211880039

Amount of investment = $974.833558209

Amount of investment = $974.83

Therefore, the Option B is correct since the Amount of investment equals $974.83.

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2 years ago

How many grams of sodium chloride must be added to make 400. ml of a 0. 600 m sodium chloride

raketka [301]

Taking into account the definition of molarity, 14.028 grams of sodium chloride must be added to make 400 mL of a 0.600 M sodium chloride.

<h3>Definition of molarity</h3>

Molar concentration or molarity is a measure of the concentration of a solute in a solution and indicates the number of moles of solute that are dissolved in a given volume.

The molarity of a solution is calculated by dividing the moles of solute by the volume of the solution:

$Molarity=\frac{number of moles}{volume}$

Molarity is expressed in units $\frac{moles}{liter}$ .

<h3>Moles of sodium chloride</h3>

In this case, you know:

Molarity= 0.600 M
number of moles= ?
volume= 400 mL= 0.400 L (being 1000 mL= 1 L)

Replacing in the definition of molarity:

$0.600 M=\frac{number of moles}{0.400 L}$

Solving:

number of moles= 0.600 M× 0.400 L

number of moles= 0.24 moles

<h3>Mass of sodium chloride</h3>

Being the molar mass of sodium chloride 58.45 $\frac{g}{mole}$ , that is the amount of mass that a substance contains in one mole, the mass of sodium chloride can be calculated as:

0.24 moles×58.45 $\frac{g}{mole}$ = 14.028 grams

Finally, 14.028 grams of sodium chloride must be added to make 400 mL of a 0.600 M sodium chloride.

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2 years ago

Building relationships during your career exploration is called ?

Lilit [14]

Networking is the answer.

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4 years ago

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Consider what you have learned about american history during the period of 1860 to the early 1900s.

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There is a lot to learn concerning American history. American history during the period of 1820 to 1864 was said to be;

A time where People were expressing their love for people and nature.
It is known as an era for romantic stories and poems.
This was an Age of Reformation period.
A time of westward expansion.

<h3>American history during the period of 1820-1864</h3>

In this period, People through the joy in their heart created poems and stories of love and an Age of Reformation period.

The development here was known as a time of westward expansion. Here there was the growth of a nationalist spirit, and with the rapid spread of cities.

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Consider what you have learned about American history during the period of 1820 to 1864. How do the stories in this unit reflect what was going on in the country then?

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3 years ago