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Sav [38]
3 years ago
9

Las Vegas, Nevada is in a desert. How does its rapid population growth affect the

Chemistry
1 answer:
Scrat [10]3 years ago
7 0

Answer:

Many areas of the United States experience explosive population growth. <u>The more people that reside someplace, the more demand there is for water there.</u> Often these urban-growth <u>expansions are unplanned and place extraordinary stress on the water supply system, mainly on the groundwater.</u> <u>The stress often depletes groundwater supply, thereby causing wells to dry up.</u> Then water must be brought from somewhere else to support the local population.

Such situations have occurred all over the United States. For example, increased population growth in the southwestern United States has significantly lowered the water table 50 to 200 feet (depending on the area) since the 1940s. Managing urban growth, efforts to reduce water demand, conservation of the resource, and attempts to increase the water supply all address the problem of exceeding water resource limits.

<u>Human activities affect groundwater quality.</u>

<u>Here are some sources </u>and possible solutions to groundwater pollution:

<u>Agriculture</u>—Reduce usage of pesticides and fertilizers.

<u>Landfills</u>—Monitor for leakage and repair linings.

<u>Underground storage tanks</u>—Remove damaged and unused tanks.

<u>Household wastes</u>—Properly dispose of household hazardous waste.

<u>Septic tank leaks</u>—Properly maintain and repair tanks.

Explanation:

This came from the K12 learning course read this and the answer will be there. I underlined the important parts for the answer.

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How much heat is required, in calories, to raise the temperature of 57.8 g of silver from
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Answer:

87.3 calories of heat is required.

Explanation:

Heat = mcΔT

m= mass, c = specific heat of silver, T = temperature

H= 57.8 g * 0.057 cal/g°C * ( 43.5 - 17 °C)

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H = 87.3069 cal.

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How many moles of SnF2 will be produced along with 48 grams of H2
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Answer:

24 moles

Explanation:

given data

H_2 = 48 grams

to find out

how many moles of SnF_2 will be produced

solution

we know that Stoichiometry is here as

Sn+2HF\rightarrow SnF_2+H_2      ......................1

so we get here mole of solute H_2 that is express as

mole = \frac{\text{given mass}}{\text{Molar Mass}}      ..........................2

put here value for H_2  

mole = \frac{48}{2}  

mole of H_2 = 24 mole

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we can say that here as per equation 1 that one mole of H_2  is go with one mole of SnF_2

so here H_2 24 mole is go with 24 moles mole of SnF_2  

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