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masya89 [10]
3 years ago
15

Concentration of Cl ion of 72.24g NaCl in .862 L solution

Chemistry
1 answer:
Nady [450]3 years ago
7 0

Answer:

Molarity_{Cl^-}=1.434\ M

Explanation:

Moles of NaCl :

Given, Mass of NaCl = 72.24 g

Molar mass of NaCl = 58.44 g/mol

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus,

Moles= \frac{72.24\ g}{58.44\ g/mol}

Moles\ of\ NaCl= 1.2361\ mol

NaCl is a strong salt. So, moles of chloride ion = 1.2361 moles

Volume = 0.862 L

Molarity=\frac{Moles\ of\ solute}{Volume\ of\ the\ solution}

Molarity_{Cl^-}=\frac{1.2361}{0.862}

Molarity_{Cl^-}=1.434\ M

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What is the mole fraction of solute in a 3.19 m aqueous solution?
Bumek [7]
Molality= mol/ Kg

if we assume that we have 1 kg of water, we have 3.19 moles of solute. 

the formula for mole fraction --> mole fraction= mol of solule/ mol of solution

1) if we have 1 kg of water which is same as 1000 grams of water. 

2) we need to convert grams to moles using the molar mass of water 

molar mass of H₂O= (2 x 1.01) + 16.0 = 18.02 g/mol

1000 g (1 mol/ 18.02 grams)= 55.5 mol

3) mole of solution= 55.5 moles + 3.19 moles= 58.7 moles of solution

4) mole fraction= 3.19 / 58.7= 0.0543 
4 0
3 years ago
To which factor can the principles of Nicholas Steno be applied?
Tcecarenko [31]

Answer:

the rock layers of the Grand Canyon

Explanation:

Steno's law are laws that applied to sedimentary rocks. These laws helps in understanding sedimentary sequences.

Sedimentary rocks are derived from the deposition of pre-existing rocks in basins. In order to understand some important relationships between these rock layers, Steno's  law offer a good insight.

Steno's law are often applied when we want to do relative dating of rock layers. Some of the laws are:

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These laws helps to interpret sedimentary rock sequences better.

7 0
4 years ago
Read 2 more answers
A water bottling company is looking to achieve maximum production from the following reversible reaction. If the reaction has re
dybincka [34]

Answer:

Remove the already produced water and allow the reaction to reach equilibrium again.

Explanation:

<em>According to Le Chatelier principle, when a reaction is in equilibrium and one of the factors that influence the rate of reaction is altered, the equilibrium will shift so as to annul the effects of the change.</em>

If the product is continuously being removed from a reaction that is in equilibrium, more product will continued to be formed in another to annul the effect of reduction in the concentration of product.

Hence, in order to maximize production of water in the reaction, the product (water) needs to be removed and the reaction allowed to reach equilibrium again.

7 0
4 years ago
Two chemicals a and b are combined to form a chemical
dedylja [7]
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-dB/B^2 = 2kdt
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1/45 - 1/50 = 2(k)(10)
k = 1.11 x 10^-4
Then substituting this value of k with t = 40:
1/B - 1/50 = 2(1.11 x 10^-4)(40)
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5 0
3 years ago
1s22s22p63823p64523d104p5s24d105p5<br> What is the name of the element?
Temka [501]

Answer:

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  This give atom has 53 electrons and we can assume it to have an atomic number of 53.

The element is IODINE

8 0
3 years ago
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