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Tems11 [23]
2 years ago
7

You have 47.0 mL of a 2.00 M concentrated or "stock" solution that must be diluted to 0.500 M. How much water should you add?

Chemistry
1 answer:
Inessa [10]2 years ago
6 0

The required volume of water to make the dilute solution of 0.5 M is 188 mL.

<h3>How do we calculate the required volume?</h3>

Required volume of water to dilute the stock solution will be calculated by using the below equation as:

M₁V₁ = M₂V₂, where

  • M₁ & V₁ are the molarity and volume of stock solution.
  • M₂ & V₂ are the molarity and volume of dilute solution.

On putting values from the question to the above equation, we get

V₂ = (2)(47) / (0.5) = 188mL

Hence required volume of water is 188 mL.

To know more about volume & concentration, visit the below link:
brainly.com/question/7208546

#SPJ1

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Rom4ik [11]

Answer:

D. 18.7 grams

Explanation:

The coefficients are the key.

Create a proportion with them, and the molar mass, and then solve for x:

\frac{2}{3}  =  \frac{x}{28}  \\ 3x = 2(28) \\ 3x = 56 \\ x = 18.666... = 18.7

7 0
4 years ago
How long can a sunflower grow? Hypothesis
Ghella [55]

Answer:

Up to 80 - 120 days.

Explanation:

The flower will probably stay six to twelve days or so.

I'm not sure what's your hypothesis going to be, but I'll give you an example.

" <em>If</em>  I __________, <em>then</em> the sunflower will grow up to 80 to 120 days."

In the blank space, you can write what you're going to do to your sunflower during the experiment.

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3 years ago
!!!10 POINTS!!! Which of these is an example of an engineering solution?
lutik1710 [3]

Answer:

A

Explanation:

Because it will not cause much harm to the environment.

I hope it's right (best of luck).

8 0
3 years ago
How is homogeneous and heterogeneous alike ?
tankabanditka [31]

Answer:

A homogeneous mixture has the same uniform appearance and composition throughout. Many homogeneous mixtures are commonly referred to as solutions. A heterogeneous mixture consists of visibly different substances or phases. The three phases or states of matter are gas, liquid, and solid.

Explanation:

4 0
3 years ago
Density of iron is 7.8 g/cc. How much would 10 cc of iron weigh?
Elena-2011 [213]

Answer:

<h3>The answer is 78 g</h3>

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

<h3>mass = Density × volume</h3>

From the question

volume = 10 cc

density = 7.8 g/cc

So we have

mass = 7.8 × 10

We have the final answer as

<h3>78 g</h3>

Hope this helps you

4 0
3 years ago
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