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Gemiola [76]
2 years ago
12

What is the volume of a 56g sample with a density of 2.5 g/ml?

Chemistry
1 answer:
Citrus2011 [14]2 years ago
6 0

Answer:

<h3>The answer is 22.4 mL</h3>

Explanation:

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

volume =  \frac{mass}{density}  \\

From the question we have

volume =  \frac{56}{2.5}  \\

We have the final answer as

<h3>22.4 mL</h3>

Hope this helps you

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Calculate the number of moles present in 9.50g of co2
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Answer:

0.4318 mol

Explanation:

Moles= mass/ mollar mass

Moles= 9.50/22

Moles= 0.4318 mol

3 0
3 years ago
At 100 degrees Celsius, the ion product for pure water is Kw= 51.3*10^-14. What is the pOH of water at this temperature? A) 7.00
Levart [38]

7.86 is the pOH of water at this temperature of 100 degrees celsius.

Option E is the right answer.

Explanation:

Data given:

Kw = 51.3 x 10^{-14}

pOH = ?

we know that pure water is neutral and will have pH pf 7.

The equation for relation between Kw and H+ and OH- ion is given by:

Kw = [H+] [OH-}

here the concentration of H+ ion and OH- ion is equal

so, [H+]= [OH-]

Putting the values in the equation of Kw

pKw = -log[Kw]

pKw = -log [51.3 x 10^{-14}]

pKw = 12.28

since H+ ion OH ion concentration is equal the pH of water is half i.e. 6.14

Now, pOH is calculated by using the equation:

14 = pOH + pH

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pOH = 7.86

8 0
3 years ago
Write molecular, complete ionic, and net ionic equations for the reactions that occur, if any, when solutions of the following s
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<span>The molecular formula that describes the problem is
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The net equation is written as follows:
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canceling out spectator ions
2H+ (aq) + Ca(OH)2 (s) ---> Ca2+ (aq) + 2 H2O (l)</span>
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The red light is refracted least. The violet light is refracted most.

Explanation:

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