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belka [17]
3 years ago
5

At night, the Moon appears bright. Which of the following explains this?

Chemistry
2 answers:
Lady bird [3.3K]3 years ago
6 0
The answer is
<span>a. The Moon reflects the light produced by the Sun.</span>
vivado [14]3 years ago
6 0

When the surface of moon reflects light from the sun, it results in shining of moon and regardless the fact that sometimes moon seems to shine brightly, the moon reflects between 3 to 12 percent of the sunlight which hits it. The moon brightness depends upon the position of the moon in orbit around the planet from the earth.

Hence, the correct option is A that is the Moon reflects the light produced by the Sun.

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An upright cylindrical tank with radius 6 m is being filled with water at a rate of 2 m3/min. how fast is the height of the wate
irina1246 [14]
<span>Volume = pir^2h = 36pih Derivative = 36pi dh/dt v' = 2 m^3/min 2 = 36pi dh/dt dh/dt = 0.0177 m/min.</span>
5 0
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A sample of helium gas has a volume of 900. milliliters and a pressure of 2.50 atm at 298 K. What is the new pressure when the t
Sergio039 [100]

<span>The combined Boyle's and Charles' gas law says P1V1/T1 = P2V2/T2 </span>

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3 years ago
What is a key element found in CO2 and glucose?
hram777 [196]
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8 0
3 years ago
Read 2 more answers
Using only the groups of the periodic table, choose one element that is chemically similar to each of the following elements.
zhenek [66]
Elements that are in the same columns (vertical) are chemically similar.

Carbon- Si
Cesium- Na
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Al- try Boron
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These are just the ones I picked but it could be any in the same column
4 0
3 years ago
Carbon tetrachloride can be produced by the following reaction: Suppose 1.20 mol of and 3.60 mol of were placed in a 1.00-L flas
hjlf

The given question is incomplete. The complete question is :

Carbon tetrachloride can be produced by the following reaction:

CS_2(g)+3Cl_2(g)\rightleftharpoons S_2Cl_2(g)+CCl_4(g)

Suppose 1.20 mol CS_2(g) of and 3.60 mol of Cl_2(g)  were placed in a 1.00-L flask at an unknown temperature. After equilibrium has been achieved, the mixture contains 0.72 mol  of CCl_4. Calculate equilibrium constant at the unknown temperature.

Answer: The equilibrium constant at unknown temperature is 0.36

Explanation:

Moles of  CS_2 = 1.20 mole

Moles of  Cl_2 = 3.60 mole

Volume of solution = 1.00  L

Initial concentration of CS_2 = \frac{moles}{volume}=\frac{1.20mol}{1L}=1.20M

Initial concentration of Cl_2 = \frac{moles}{volume}=\frac{3.60mol}{1L}=3.60M

The given balanced equilibrium reaction is,

                 CS_2(g)+3Cl_2(g)\rightleftharpoons S_2Cl_2(g)+CCl_4(g)

Initial conc.         1.20 M        3.60 M                  0                  0

At eqm. conc.     (1.20-x) M   (3.60-3x) M   (x) M        (x) M

The expression for equilibrium constant for this reaction will be,

K_c=\frac{[S_2Cl_2]\times [CCl_4]}{[Cl_2]^3[CS_2]}

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

K_c=\frac{(x)\times (x)}{(3.60-3x)^3\times (1.20-x)}

Given :Equilibrium concentration of CCl_4 , x = \frac{moles}{volume}=\frac{0.72mol}{1L}=0.72M

K_c=\frac{(0.72)\times (0.72)}{(3.60-3\times 0.72)^3\times (1.20-0.72)}

K_c=0.36

Thus equilibrium constant at unknown temperature is 0.36

4 0
3 years ago
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