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Arte-miy333 [17]
3 years ago
15

How many mL of solution are required to make a 0.270M solution of sodium chloride if you have 2.18g of sodium chloride?

Chemistry
1 answer:
dem82 [27]3 years ago
3 0

Answer:

138mL are required to make the solution

Explanation:

A solution of 0.270M contains 0.270 moles of solute (NaCl in this case), per liter of solution.

To solve this problem we need to determine the moles of NaCl in 2.18g. With these moles and molarity we can find the volume required to prepare the solution:

<em>Moles NaCl -Molar mass: 58.44g/mol-:</em>

2.18g * (1mol / 58.44g) = 0.0373moles NaCl

<em>Volume of solution:</em>

0.0373moles NaCl * (1L / 0.270moles) = 0.138L

<h3>138mL are required to make the solution</h3>

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<h3>Hope this helps</h3>
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3 years ago
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Answer:
            KNO₃ is an electrolyte.

Explanation:
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What do dipole-dipole forces do?
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How many grams of argon would it take to fill a large light bulb with a volume of 0.745 L at STP?
EastWind [94]

Answer:

Mass = 1.33 g

Explanation:

Given data:

Mass of argon required = ?

Volume of bulb = 0.745 L

Temperature and pressure = standard

Solution:

We will calculate the number of moles of argon first.

Formula:

PV = nRT

R = general gas constant = 0.0821 atm.L/mol.K

By putting values,

1 atm ×0.745 L = n × 0.0821 atm.L/mol.K× 273.15 K

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n = 0.745 atm. L / 22.43 atm.L/mol

n = 0.0332 mol

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Mass = number of moles × molar mass

Mass = 0.0332 mol × 39.95 g/mol

Mass = 1.33 g

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3 years ago
Carbon (C): 1s(H)2s(I)2p(J)<br> What is H, I, and J equal?
Artemon [7]

Answer:

H =2; I = 2; J = 2  

Explanation:

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Start at element 1 (H) and count from left to right until you reach element 6 (C).

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