All categories

3 years ago

calculate the molarity of a solution that contains 2 moles of NaOH dissolve in 0.5 liter of the solution

Chemistry

1 answer:

Anon25 [30]3 years ago

8 0

Use the equation to find Molarity of M = n/V

n being the moles and V being the volume, in this case, the liters. With that, you take 2 and divide that by .5 to get the molarity of 4M.

Hope this helps!

You might be interested in

Potassium carbonate dissolves as follows:

lara [203]

The 0.25 volume in liters of 1.0 M $K_{2}CO_{3}$ solution is required to provide 0.5 moles of $K$ (aq).

Calculation,

The Potassium carbonate dissolves as follows:

$K_{2}CO_{3}(s)$ → $2K(aq) +$ $CO_{3}^{-2} (aq)$

The mole ratio is 1: 2

It means, the 1 mole $K_{2}CO_{3}$ required to form 2 mole of $K$ (aq).

To provide 0.5 mole of $K$ (aq) = 1 mole ×0.5 mole /2 mole required by $K_{2}CO_{3}$ .

To provide 0.5 mole of $K$ (aq) ,0.25 mole required by $K_{2}CO_{3}$ .

The morality of $K_{2}CO_{3}$ = 1 M = number of moles / volume in lit

The morality of $K_{2}CO_{3}$ = 1 M = 0.25 mole/ volume in lit

Volume in lit = 0.25 mole / 1 M = 0.25 mole/mole/lit = 0.25 lit

learn about moles

brainly.com/question/26416088

#SPJ4

5 0

2 years ago

How many grams of fluorine are contained in 8 molecules of boron trifluoride?

Lelu [443]

<h3>Answer:</h3>

7.57 × 10⁻²² g of F

<h3>Solution:</h3>

Data Given:

Number of Molecules = 8

M.Mass of BF₃ = 67.82 g.mol⁻¹

Mass of Fluorine atoms = ?

Step 1: Calculate Moles of BF₃

Moles = Number of Molecules ÷ 6.022 × 10²³ Molecules.mol⁻¹

Putting value,

Moles = 8 Molecules ÷ 6.022 × 10²³ Molecules.mol⁻¹

Moles = 1.33 × 10⁻²³ mol

Step 2: Calculate Mass of BF₃:

Moles = Mass ÷ M.Mass

Solving for Mass,

Mass = Moles × M.Mass

Putting values,

Mass = 1.33 × 10⁻²³ mol × 67.82 g.mol⁻¹

Mass = 9.0 × 10⁻²² g

Step 3: Calculate Mass of Fluorine Atoms:

As,

67.82 g BF₃ contains = 57 g of F

So,

9.0 × 10⁻²² g will contain = X g of F

Solving for X,

X = (9.0 × 10⁻²² g × 57 g) ÷ 67.82 g

X = 7.57 × 10⁻²² g of F

4 0

3 years ago

Read 2 more answers

What is the random mixing of gas molecules called?

const2013 [10]

I think it’s (D) pressure

7 0

3 years ago

Read 2 more answers

Which term names the group of organisms able to interbreed and produce fertile offspring?

vladimir2022 [97]

Answer:

Species

Explanation:

Species is the group of organisms able to interbreed and produce fertile offspring.

Let's break down each word in the question:

"Organisms" means living thing. It can be a plant or animal like we usually think of, but it also includes the really small single-celled living things like some bacteria.

"Interbreed" means to mate with each other.

"Fertile" means that the living thing can also have babies.

"Offspring" means the children that are born.

"Fertile offspring" means that the children that are made must be able to have babies of their own. For example, if a frog and a bird could interbreed, they might produce offspring (children). But, if those frog-birds cannot also have children, then frog-bird is not a species.

7 0

3 years ago

How are the three isotopes of carbon the same ?

kondor19780726 [428]

Answer:

I'm srry

Explanation:

PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE don't yell at me I don't know

8 0

3 years ago