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kati45 [8]
3 years ago
5

Which reflects more sunlight-dark soil or white sand?

Chemistry
2 answers:
alukav5142 [94]3 years ago
8 0
White sand since darker colors reflect the least amount of light, and absorb it instead. However, lighter colors such as white reflect the most light. Hope this helped.
Gnesinka [82]3 years ago
4 0
I think the answer is white sand (sorry if i am wrong) 
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You are given a solution that is 518 mM lactose. You need to make up 4.5 L of 16.7 mM solution. What volume do you need to trans
OLga [1]

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The volume you need to transfer from the stock solution is 0.145 l

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Since the number of moles of lactose in the volume of stock solution that you transfer will be the same as the number of moles of lactose in the final solution, you can use this expression:

number of moles in volume to transfer = number of moles in the final solution

Since number of moles = concentration * volume (if the concentration is expressed in molarity), then:

Ci * Vi = Cf * Vf

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Then, replacing with the data:

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Vi = 16.7 mM * 4.5 l / 518 mM

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