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4 years ago

Which of the following is not harmed by acid rain?

Chemistry

2 answers:

Paul [167]4 years ago

7 0

B) Glass Windows..... Hope it helps :)

DiKsa [7]4 years ago

5 0

Answer: glass windows

Explanation:

An acid rain is appears when the sulfur oxide and nitrous oxide present in the atmosphere get mixed with the water vapors forms sulphuric acid and nitric acid in the atmosphere which comes down in the biosphere in the form of precipitation called as acid rain. The acid rain is capable of causing damage to the building materials such as concrete, marble, cement also capable of causing corrosion of the iron.

The acid rain has no effect over the glass windows because of the fact that glass is a solid hard material which cannot be damaged by the any kind of chemical such as acids or alkalies.

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Assuming the boiling point increased by 2 Â°C, what is the approximate molality of NaCl when the video ends? Kbp(water) = 0.512

makkiz [27]

Answer : The molality of NaCl is, 1.95 mol/kg

Explanation :

Formula used for Elevation in boiling point :

$\Delta T_b=i\times k_b\times m$

where,

$\Delta T_b$ = change in boiling point = $2^oC$

$k_b$ = boiling point constant for water = $0.512^oC/m$

m = molality

i = Van't Hoff factor = 2 (for electrolyte)

The dissociation $NaCl$ will be,

$NaCl\rightarrow Na^++Cl^{-}$

So, Van't Hoff factor = Number of solute particles = $Na^++Cl^{-}$ = 1 + 1 = 2

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

$2^oC=2\times (0.512^oC/m)\times m$

$m=1.95mol/kg$

Therefore, the molality of NaCl is, 1.95 mol/kg

6 0

3 years ago

A sample of sulfur hexafluoride gas occupies a volume of 9.10 L at 198ÁC. Assuming that the pressure remains constant, what temp

alexandr1967 [171]

As we know that
<span>V1/T1 = V2/T2
V1 = 9.10 L
T1 = 471 K
V2 = 2.50 L
T2 = 2.5 x 471 / 9.10 = 129.3 K
T2 = 129.3 - 273 =
-143.6 deg Celsiu
hope it helps</span>

5 0

4 years ago

Read 2 more answers

When an electron move from a high energy level to a low energy, it ______ energy.

hjlf

Answer:

released often as light.

7 0

3 years ago

How is a cation different from a anion

masya89 [10]

Cation means a positively charged ion. Anion is a negative one