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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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The complete combustion of copper(I) sulphide is according to the following equation:
MaRussiya [10]

Answer:

a) 7.94 x 10²³ molecules, b) 5.62 g SO2, c) 1.97 L

Explanation:

a) We need to first convert Cu2S to moles. Since molar mass of Cu2S is 159.14 g/mol, 14.0 g = 0.0880 mol. Using molar ratios (3 mol O2/2 mol Cu2S, 0.0880 mol of Cu2S = 0.132 mol O2. Since 1 mol contains 6.02 x 10²³ molecules, 0.132 mol O2 = 7.94 x 10²² molecules O2.

b) Since the molar ratios of Cu2S to SO2 is 1:1, 0.0880 mol of Cu2S produces 0.0880 mol SO2. To convert mol to grams, we use the molar mass of SO2 (64.06 g/mol) to figure out that 0.0880 mol SO2 = 5.63 g SO2.

c) At STP, 1 mol occupies 22.4 liters. 0.0880 mol SO2 x 22.4 L/1 mol = 1.97 L

If you would like more tutoring in chemistry or other subjects for FREE, check out growthinyouth.org.

5 0
3 years ago
a model of an atom shows eight electrons in rings that represent different energy levels. how many electrons are in each energy
vlada-n [284]

Answer:

1. four in the first energy level, four in the second energy level

2. eight in the first energy level, zero in the second energy level

3. zero in the first energy level, eight in the second energy level

4. two in the first energy level, six in the second energy level *

Explanation:

1. four in the first energy level, four in the second energy level

2. eight in the first energy level, zero in the second energy level

3. zero in the first energy level, eight in the second energy level

4. two in the first energy level, six in the second energy level *

4 0
3 years ago
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Elina [12.6K]

Answer:

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4 years ago
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