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serg [7]
3 years ago
6

There are many methods used to obtain energy for use in our our daily lives. Some of these methods have possible environmental c

onsequences to rivers, groundwater, and organisms. Which types of energy sources have very few or no negative environmental consequences?
A) wind and solar
B) solar and nuclear
C) coal and petroleum
D) petroleum and nuclear
Chemistry
1 answer:
Len [333]3 years ago
8 0
(A)wind and solar should be the answer

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Part 1: What is the final volume in milliliters when 0.730 L of a 44.8 % (m/v) solution is diluted to 23.3 % (m/v)?
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part 1 : the final volume : 1.404 L

part 2 : the initial concentration : 4.06 M

<h3>Further explanation </h3>

Dilution is the process of adding a solvent to get a more dilute solution.

The moles(n) before and after dilution are the same.

Can be formulated :

M₁V₁=M₂V₂

M₁ = Molarity of the solution before dilution  

V₁ = volume of the solution before dilution  

M₂ = Molarity of the solution after dilution  

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\tt V_2=\dfrac{M_1.V_1}{M_2}\\\\V_2=\dfrac{44.8\times 0.73}{23.3}\\\\V_2=1.404~L

part 2 :

V₁=739 ml=0.739 L

V₂=1.5 L

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\tt M_1=\dfrac{M_2.V_2}{V_1}\\\\M_1=\dfrac{2\times 1.5}{0.739}\\\\M_1=4.06

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