All categories

2 years ago

What is the molarity of a 3.0-liter solution that contains 0.45 moles of solute?

Chemistry

2 answers:

jolli1 [7]2 years ago

5 0

Molarity = moles / Volume in liters

M = 0.45 / 3.0

M = 0.15 mol/L

anyanavicka [17]2 years ago

3 0

Answer: 0.15 M

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.

$Molarity=\frac{moles}{\text {Volume in L}}$

Moles are calculated by dividing the given mass by molecular mass of that substance.

$Molarity=\frac{0.45moles}{\text {3.0 L}}$

$Molarity=0.15M$

You might be interested in

Need help balancing equations please.

densk [106]

Answer:

A, 4,3,2

B, 1,1,2

C, 1,1,1,2

3 0

2 years ago

At each step, a dichotomous key involves how many choices

kvasek [131]

Two, hope this helps

8 0

3 years ago

Read 2 more answers

The mass of the erlenmeyer flask alone is 88.000 grams. calculate the mass of the zinc and hcl after the addition of 25 grams of

arsen [322]

If concentration of HCl is 1 mol/dm³ :
m(<span>erlenmeyer flask) = 88,00 g.
m(Zn) = 25,0 g.
V(HCl) = 15 ml = 15 cm</span>³ = 0,015 dm³.
Chemical reaction: Zn + 2HCl → ZnCl₂ + H₂.
n(HCl) = c(HCl) · V(HCl).
n(HCl) = 1 mol/dm³ · 0,015 dm³ = 0,015 dm³.
n(Zn) = 25 g ÷ 65,4 g/mol = 0,38 mol.
n(H₂) = 0,015 mol ÷ 2 = 0,0075 mol.
m(H₂) = 0,0075 mol · 2g/mol = 0,015 g.

7 0

3 years ago

18.2 mL of a 0.156 M solution of lead(II) nitrate are added to 26.2 mL of a 0.274 M solution of potassium iodide.

kow [346]

The mass of the Pbl2 : 1308.87

<h3>Further explanation</h3>

Given

18.2 mL of a 0.156 M Pb(NO3)2

26.2 mL of a 0.274 M KI

Reaction

Pb(NO3)2 (aq) + 2 KI (aq) - Pbl2 (s) + 2 KNO3

Required

the mass of the Pbl2

Solution

mol Pb(NO3)2 = 18.2 x 0.156 = 2.8392 mlmol

mol KI = 26.2 x 0.274 =7.1788 mol

Limiting reactant Pb(NO3)2(smaller ratio of mol : reaction coeffiecient)

mol Pbl2 based on limiting reactant (Pb(NO3)2)

From equation, mol ratio of Pb(NO3)2 : Pbl2 = 1 : 1, so mol Pbl2=mol Pb(NO3)2=2.8392

Mass Pb(NO3)2 :

$\tt mass=mol\times MW\\\\mass=2.8392\times 461\\\\mass=1308.87~grams$

5 0

2 years ago

What is The definition of an organ

aleksandr82 [10.1K]

A part of organism that is typically self contained and have a specific vital

4 0

2 years ago