You are running a lemonade stand with your friend. you prepared 10 liters of 0.7 molarity lemonade, but your friend did online research and found that people prefer 0.4 molarity lemonade. how can you fix the lemonade you made so that it is 0.4 molarity without starting over?

add 7.5L of water

Explanation:

M1×V1=M2×V2

M is molarity, V is volume

0.7 × 10 = 0.4 × V2

V2= 17.5L

vol. of water to add= 17.5 - 10 = 7.5L

the correct option is c.

isotopes refers to different forms of the same element with the same atomic number but different mass number as a result of difference in their neutron numbers. isotopes have different relative atomic mass but share the same chemical properties.

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