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Sav [38]
2 years ago
14

Pls describe the water system in the southwest USA and current complications. describe two or three ways that everyone can conse

rve water.
Chemistry
1 answer:
crimeas [40]2 years ago
5 0

Answer:

It has become evident in recent years that established water policies, under the current laws and management regimes that have allowed a flourishing agriculture and economy in the Southwest, are not appropriate to the challenges facing water demand in the 21st century. Yet only limited institutional and policy steps have been taken to develop new tools and approaches addressing these challenges. The circumstances listed below illustrate some of the more important unsustainable aspects of water use in the Southwest.

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Amanda wants to paint the ceiling of her restaurant. The ceiling is in the shape of a square. Its side lengths are 39 feet. Supp
Delvig [45]

if da ceiling in a square that means it has four sides. If each side is 39 feet and there are four sides you would multiply 39 times 4 which equals 156. If one can of paint can cover 169 ft.² and the ceiling is only 156 ft.² then you would only need 1 CAN OF PAINT.

7 0
3 years ago
the solubility product Ag3PO4 is: Ksp = 2.8 x 10^-18. What is the solubility of Ag3PO4 in water, in moles per liter?
guapka [62]

Answer : The solubility of Ag_3PO_4 in water is, 1.8\times 10^{-5}mol/L

Explanation :

The solubility equilibrium reaction will be:

Ag_3PO_4\rightleftharpoons 3Ag^++PO_4^{3-}

Let the molar solubility be 's'.

The expression for solubility constant for this reaction will be,

K_{sp}=[Ag^{+}]^3[PO_4^{3-}]

K_{sp}=(3s)^3\times (s)

K_{sp}=27s^4

Given:

K_{sp} = 2.8\times 10^{-18}

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

K_{sp}=27s^4

2.8\times 10^{-18}=27s^4

s=1.8\times 10^{-5}M=1.8\times 10^{-5}mol/L

Therefore, the solubility of Ag_3PO_4 in water is, 1.8\times 10^{-5}mol/L

3 0
3 years ago
How much heat will a 45.00 g piece of glass require to change its temperature from 10 to 30 °C. The specific heat capacity is 0.
kolbaska11 [484]

Answer:

Q = 450 J

Explanation:

Given that,

Mass of a piece of glass, m = 45 g

The temperature changes from 10°C to 30°C.

The specific heat is 0.5 J/g°C

We need to find heat required to raise the temperature. The formula that is used to find it is given by :

Q=mc\Delta T\\\\Q=45\times 0.5\times (30-10)\\\\Q=450\ J

So, the required heat is 450 J. Hence, the correct option is (c).

6 0
2 years ago
How many total moles of KNO3 must be dissolved in water to make 1.5 liters of a 2.0 M solution?
Umnica [9.8K]
1.5 L KNO3 solution* (2.0 mol KNO3/ 1 L KNO3 solution)= 3.0 mol KNO3.

The correct answer is (3) 3.0 mol.

Hope this would help~
5 0
3 years ago
How many moles moles carbon dioxide gas are there in 11.2 of CO2 at STP?
serious [3.7K]

Answer:

0.5 moles

Explanation:

At STP,

<u><em>Every 22.4 L of carbon dioxide contains 1 mole of gas.</em></u>

<u><em /></u>

============================================================

Solving :

⇒ 22.4 L : 1 mole

⇒ 22.4 × 0.5 : 1 × 0.5

⇒ 11.2 L : 0.5 moles

3 0
1 year ago
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