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ira [324]
3 years ago
10

A solution of h2so4(aq) with a molal concentration of 2.24 m has a density of 1.135 g/ml. what is the molar concentration of thi

s solution
Chemistry
1 answer:
OLga [1]3 years ago
7 0
This problem is simply converting the concentration from molality to molarity. Molality has units of mol solute/kg solvent, while molarity has units of mol solute/L solution.

2.24 mol H2SO4/kg H2O * (0.25806 kg H2SO4/mol H2SO4) = 0.578 kg H2SO4/kg H2O

That means the solution weighs a total of 1 kg + 0.578 kg = 1.578 kg. Then, convert it to liters using the density data:

1.578 kg * (1000g / 1kg) * (1 mL/1.135 g) = 1390 mL or 1.39 L.

Hence, the molarity is

2.24/1.39 = 1.61 M
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Explain how physical evidence is analyzed and presented in the courtroom by the forensic scientist. And HOW admissibility of evi
valentina_108 [34]

Answer:

known as reactions and metaphorically breaking the witness into telling the truth. I hope this helped:)

Explanation:

7 0
3 years ago
What is the pH of a solution within a solution with pH = 4.50? [H +] = 3.25×10-6 M?
Lisa [10]

Answer: 5.48

Explanation:

pH is the negative logarithm of hydrogen ion concentration in a solution.

Mathematically, pH = - log(H+)

where H+ represent the concentration of hydrogen ion

So, to get the pH of the solution with [H +] = 3.25×10-6 M:

Apply, pH = -log(H+)

pH = - log (3.25×10-6 M)

pH = - ( -5.48)

(Note that the minus signs will cancel out each other)

Therefore pH = 5.48

Now we know that the pH of the solution with hydrogen ion concentration of 3.25×10-6 M is 5.48 (i.e slightly acidic)

Thus, we can finally say 5.48 is the pH of the solution within a solution with pH = 4.50

6 0
3 years ago
What elements are in nickel oxide
shepuryov [24]

nickel oxide is the chemical compound with a formula called NiO.

what are the elements in nickel oxide?

there is <span><span>a silver looking white crystalline metal that takes place in meteors also combined with other elements in ores.</span>
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4 0
4 years ago
Read 2 more answers
What is the total pressure in atmosphere (atm) of a gas mixture containing argon gas at 0.28 atm, helium gas at 760 mm Hg, and n
siniylev [52]

Answer:

I dont know, sorry!

4 0
3 years ago
Please help fast
Vilka [71]

Moles of Oxygen they took in : C. 2.42

<h3>Further explanation</h3>

The gas equation can be written  

\large{\boxed{\bold{PV=nRT}}}

where  

P = pressure, atm  

V = volume, liter  

n = number of moles  

R = gas constant = 0.08205 l.atm / mol K  

T = temperature, Kelvin  

P=1000 kPa

V = 6 L

T = 298 K

moles of Oxygen :

\tt n=\dfrac{PV}{RT}\\\\n=\dfrac{1000\times 6}{8.31\times 298}\\\\n=2.42~moles

5 0
3 years ago
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