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stepladder [879]
3 years ago
7

HELP ASAPP PLZZZ I WILL GIVE YOU 50 POINTS

Chemistry
2 answers:
Sedaia [141]3 years ago
8 0

Answer:

Explanation:

I would not classify it as acid rain because an acidic pH is anything lower than 7. The question says the pH is 7.2 which is close to a neutral pH and also typical acid rain has a pH value of 4.0 so your sample probably isn't acid rain.

As far as environment, acid rain removes minerals and nutrients from the soil that trees need to grow, therefore dying plants or trees are common in areas where acid rain is frequent.

As far as human health, things that make acid rain such as sulfur dioxides and nitrogen oxides tend to have an enormous effect on our respiratory and cardiovascular health. These particles that make acid rain can cause heart attacks resulting in death for people with increased heart disease risk, and effects on lung function, such as breathing difficulties for people with asthma.

Karolina [17]3 years ago
7 0

Explanation:

nahh.. the rain is not an acid rain.. acidic rain/water etc Ph level is below 7.. 7.2 is still considered normal.. as for the effect for the human health, it do not cause direct effect as it is not acidic enough. as for the environment, it may cause harm to the ecosystem. for example, the declination of a species of fish etc

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4 years ago
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Suppose a gas starts with a volume of 4.52L, temperature of 23 C, and pressure of 102,00 Pa. If the volume changes to 4.83L and
ivanzaharov [21]

Answer:

The answer to your question is     P2 = 84.16 kPa

Explanation:

Data

Volume 1 = V1 = 4.52 L            Volume 2 = V2 = 4.83 l

Pressure 1 = P1 = 102 kPa        Pressure 2 = P2 = ?

Temperature 1 = T1 = 23°C      Temperature 2 = T2 = -12°C

Process

1.- Convert the temperature to °K

Temperature 1 = 23 + 273 = 296°K

Temperature 2 = -12 + 273 = 261°K

2.- Use the Combined Gas law to solve this problem

                  P1V1/T1 = P2V2/T2

-Solve for P2

                  P2 = P1V1T2 / T1V2

-Substitution

                  P2 = (102)(4.52)(261) / (296)(4.83)

-Simplification

                  P2 = 120331.44 / 1429.68

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8 0
3 years ago
Arrange the following H atom electron transitions in order of increasing frequency of the photon absorbed or emitted:
Setler [38]

The order of frequency is d < a < c < b

E_{n} = 13.6 * z^{2} / n^{2} eV

where z = atomic mass number

n = energy level

For hydrogen z = 1

Therefore, Energy for n = 1

E_{n} = 13.6 * 1^{2} / 1^{2} eV

     = -13.6 eV

for n = 2

E_{n} = 13.6 * 1^{2} / 2^{2} eV

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for n = 3

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for n = 4

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for n = 5

 E_{n} = 13.6 * 1^{2} / 5^{2} eV

      = -0.544 eV

n = 2 to n = 4 (absorption)

ΔE = E4 - E2   = -0.85 - (-3.40) = 2.55 eV

n = 2 to n = 1 (emission)

ΔE =  E1 - E2  = -13.6 - (-3.40) = -10.2eV

The negative sign indicates that emission will take place.

n = 2 to n = 5 (absorption)

ΔE = E5 - E2 = -0.544 - (-3.40) = 2.856 eV

n = 4 to n = 3 (emission)

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We know that

E = h * υ

Therefore, Energy is proportional to frequency.

So increasing the order of energy is

E4  < E1  < E3  <  E2

order of frequency is

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For more information click on the link below:

brainly.com/question/17058029

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