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astra-53 [7]
2 years ago
7

I’m taking a test!! Please help!!

Chemistry
2 answers:
777dan777 [17]2 years ago
8 0

Answer:

I am not really sure, but I think Fr.

Explanation:

jekas [21]2 years ago
8 0
Pretty sure Fluorine is the right one
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What volume of a 2.5 M stock solution of acetic acid (HC2H3O2) is required to prepare
Schach [20]

<span> </span>

Answer is: volume is 20 mL.<span>
c</span>₁(CH₃COOH) = 2,5 M.<span>
c</span>₂(CH₃COOH) = 0,5 M.<span>
V</span>₂(CH₃COOH) = 100 mL.<span>
V</span>₁(CH₃COOH) = ?<span>
c</span>₁(CH₃COOH) · V₁(CH₃COOH) = c₂(CH₃COOH) · V₂(CH₃COOH).<span>
2,5 M · V</span>₁(CH₃COOH) = 0,5 M · 100 mL.<span>
V</span>₁(CH₃COOH) = 0,5 M · 100 mL ÷ 2,5 M.<span>
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8 0
2 years ago
Please i need your help asap!
denis23 [38]

Answer:

Density is mass over volume.

Explanation:

6 0
2 years ago
If 23.5 g of ammonia (NH3) is dissolved in 1.0 L of solution, what is the molarity?
r-ruslan [8.4K]

Answer:

1.38 M

Explanation:

Need to use the Molarity equation M=n/L

23.5g/ 17.031g/mol NH3 = 1.38 moles

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4 0
2 years ago
A(n)____ is a ripened ovary
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A(n) fruit is a ripened ovary
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2 years ago
What is the molality of a solution containing 3. 0 moles of nacl and 100. 0 moles of water?
Mama L [17]

The molality of a solution containing 3. 0 moles of NaCl and 100. 0 moles of water is 30 mol/kg.

The number of moles of solute in a solution equal to 1 kg or 1000 g of solvent is referred to as its molality. Mole per kilogram of solvent is the SI unit for molality.

Given:

3.0 moles of NaCl in 100 moles of water.

To find:

The molality of the solution

The moles of solute (NaCl) = 3.0 moles

The mass of solvent (water) = 100 moles (0.1 kg/mol)

Molality of a solution = Number of Moles of solute/ Mass of solvent(kg)

                                 = 3.0 moles/0.1 kg/mol

                                 = 30 mol/kg

To know more about Molality refer:

brainly.com/question/20354433

#SPJ4

                                           

4 0
1 year ago
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