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2 years ago

Why does the sand on a beach get so much warmer than the water on a sunny day?

1 answer:

5 0

It’s because sand is a poor conductor of heat so when the sun warms the sand, the heat is not disturbed evenly. Also the specific heat of sand is is lower than that of water.

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Please help me with this question it’s due in five minutes I’ll give brainliest

zysi [14]

I believe the correct answer is A) 6

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3 years ago

Look at the diagram below.

Kazeer [188]

Answer:

3rd statment

Explanation:

ray 1 and 2 are same vertical line

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3 years ago

Read 2 more answers

Here it was the picture to that

inessss [21]

Answer:

a. D

b. F

Explanation:

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3 years ago

An aqueous CsCl solution is 8.00 wt% CsCl and has a density of 1.0643 g/mL at 20°C. What is the boiling point of this solution?

umka2103 [35]

<u>Answer:</u> The boiling point of solution is 100.53

<u>Explanation:</u>

We are given:

8.00 wt % of CsCl

This means that 8.00 grams of CsCl is present in 100 grams of solution

Mass of solvent = (100 - 8) g = 92 grams

The equation used to calculate elevation in boiling point follows:

$\Delta T_b=\text{Boiling point of solution}-\text{Boiling point of pure solution}$

To calculate the elevation in boiling point, we use the equation:

$\Delta T_b=iK_bm$

Or,

$\text{Boiling point of solution}-\text{Boiling point of pure solution}=i\times K_b\times \frac{m_{solute}\times 1000}{M_{solute}\times W_{solvent}\text{ (in grams)}}$

where,

Boiling point of pure solution = 100°C

i = Vant hoff factor = 2 (For CsCl)

$K_b$ = molal boiling point elevation constant = 0.51°C/m

$m_{solute}$ = Given mass of solute (CsCl) = 8.00 g

$M_{solute}$ = Molar mass of solute (CsCl) = 168.4 g/mol

$W_{solvent}$ = Mass of solvent (water) = 92 g

Putting values in above equation, we get:

$\text{Boiling point of solution}-100=2\times 0.51^oC/m\times \frac{8.00\times 1000}{168.4g/mol\times 92}\\\\\text{Boiling point of solution}=100.53^oC$

Hence, the boiling point of solution is 100.53

6 0

3 years ago

What do all four of these types of molecules have in common?

nalin [4]

D. They all contain carbon as an important part of their structure.

3 0

3 years ago