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PtichkaEL [24]
2 years ago
14

What is the molarity of a solution that contains 0.500 mole of kno3 dissolved in 0.500-liter of solution?

Chemistry
1 answer:
belka [17]2 years ago
7 0

Answer : The molarity of solution is, 1.00 M

Explanation : Given,

Moles of KNO_3 = 0.500 mol

Volume of solution = 0.500 L

Molarity : It is defined as the number of moles of solute present in one liter of volume of solution.

Formula used :

\text{Molarity}=\frac{\text{Moles of }KNO_3}{\text{Volume of solution (in L)}}

Now put all the given values in this formula, we get:

\text{Molarity}=\frac{0.500mol}{0.500L}=1.00mole/L=1.00M

Therefore, the molarity of solution is, 1.00 M

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Given the reaction _K(s) +_ Cl2(g) → _KCl(s) what is the amount of K, in grams, needed to completely react with 2 moles of Cl2(g
damaskus [11]

Answer:

156.4g K

Explanation:

I'm not sure if it is correct but I think it should be this

What do we know so far?: 2K + 1Cl2 -> 2KCl, 2 mol of Cl2

What are we looking for?: #g of K

What is the ratio of K to Cl2?: 2:1

Set up equation: 2molCl2 x \frac{2mol K}{1 mol Cl2}

Cancel unwanted units: 2 x \frac{2mol K}{1}

Answer we got: 2 x 2mol K = 4mol K

Converting moles to grams: 4 x 39.1 (molar mass of K) = 156.4g K

3 0
2 years ago
Solid carbon reacts with oxygen gas to form carbon dioxide gas . Write a balanced chemical equation for this reaction
Nikitich [7]

Solid carbon reacts with oxygen gas to form carbon dioxide gas.

The balanced chemical equation for this reaction:

C (s) + O_{2}(g) ---> CO_{2}(g)

7 0
3 years ago
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betty drew the life cycle of a butterfly for a science exhibition. the cycle showed the various stages of growth before the eggs
jasenka [17]

Answer:

Conceptual.

Explanation:

Conceptual method includes a diagrammatic representation of biological life cycle. It helps in better understanding of the life cycle of an organism. Betty is also using conceptual method to illustrate the life cycle of butterfly. The diagrams show various stages of growth of butterfly in a picture form. This enables the students to easily understand the phenomena.

6 0
3 years ago
5. How many grams of potassium bromide will dissolve in 450g of water at 80°C?
Shtirlitz [24]
Hi mate. I think the answer is 100
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2 years ago
Find the discriminant and the number of real roots for this equation.<br> x2 + 2x+8 = 0
adell [148]

Answer:

<em>Option 'D' is correct.</em>

Step-by-step explanation:

Since we have given that

We will first find the "Discrimination":

Since discriminant is less than 0 i.e. D<0.

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Hence, D = -28 and there is no real roots.

Therefore, Option 'D' is correct.

Explanation:

3 0
3 years ago
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