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4 years ago

14

Why is salt (NaCl) put on icy roads and sidewalks in the winter?

2 answers:

lana66690 [7]4 years ago

8 0

Answer: a) It is ionic and lowers the freezing point of water.

Freezing point depression is the process of the decrease in the freezing point of a solvent by addition of a non-volatile solute such as salt. The salt is added to the icy roads so as to lower down the freezing point of water and preventing the formation of the ice on the road this phenomena is called as freezing point depression. The ionic components of the salt split apart like Na⁺ and Cl⁻ and interacts with the water molecules which combines to form the solid state ice. Thereby, ions of salt interrupting in the formation of the solid structure that is ice.

Kipish [7]4 years ago

4 0

Why is sodium chloride (NaCl) put on icy roads and sidewalks in the winter?

<span> Your answer would be </span>

<span> a) It is ionic and lowers the freezing point of water.</span>

Explanation:

<span>to lower the freezing point so people don't slip</span>

Hope this helps.

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If(√14/√7-2)-(√14/√7+2)=a√7+b√2 find the values of a and b where a and b are rational numbers

seraphim [82]

Answer:

a = 4/3 and b = 0

============================

<h2>Given expression:</h2>

$\dfrac{\sqrt{14} }{\sqrt{7}-2} -\dfrac{\sqrt{14} }{\sqrt{7}+2}$

<h2>Simplify it in steps:</h2>

<h3>Step 1</h3>

Bring both fractions into common denominator:

$\dfrac{\sqrt{14} (\sqrt{7}+2)}{(\sqrt{7}-2)(\sqrt{7}+2)} - \dfrac{\sqrt{14} (\sqrt{7}-2)}{(\sqrt{7}-2)(\sqrt{7}+2)}$

<h3>Step 2</h3>

Simplify:

$\dfrac{\sqrt{14} ((\sqrt{7}+2) - (\sqrt{7}-2))}{(\sqrt{7}-2)(\sqrt{7}+2)} =$

$\dfrac{\sqrt{14} (\sqrt{7}+2 - \sqrt{7}+2)}{(\sqrt{7}-2)(\sqrt{7}+2)} =$

$\dfrac{4\sqrt{14} }{(\sqrt{7}-2)(\sqrt{7}+2)} =$

$\dfrac{4\sqrt{14} }{(\sqrt{7})^2-2^2} =$

$\dfrac{4\sqrt{14} }{7-4} =$

$\dfrac{4}{3} \sqrt{14} }$

<h3>Step 3</h3>

Compare the result with given expression to get:

a = 4/3 and b = 0

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2 years ago

What is the LCD of 8/9 and 7/8

Stels [109]

Answer:

72 I think

Step-by-step explanation:

I'm not 100% sure but I think its 72

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3 years ago

Read 2 more answers

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yawa3891 [41]

Answer:

False

Step-by-step explanation:

The answer is in its name. Its a property of equality meaning it makes sure that both sides are equal to each other

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2 years ago

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BigorU [14]

Step-by-step explanation:

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To conduct simulation, let's assume experiment is to be done 10 times

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2. We get a random sample and get the size of people who support an against smoking with kids in the car.

3. We repeat this process after drawing sample and also get the number of those in support of ban.

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2 years ago

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Answer:

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2 years ago