Answered

For a science experiment Marcia dissolved 1.0 kilogram of salt in 3.0 liters of water. For a different experiment,bobby dissolved 2.0 pounds of salt in 7.0 pints of water. Which person made a more concentrated salt solution? Explain. Use 1L=2.11 pints. Round your answer to the nearest hundredth

Verified Answer :

taskmasters

Marcia dissolved 1 kg of salt in 3 litres of water


Bobby dissolved 2 pounds of salt in 7 pints of water


We know that
1 litre = 2.11 pints


We also know that
1 pound = 0.4535 kg


Now if we take the case of Bobby, and convert the pound to
kg then


1 pound = 0.4535 kg


2 pounds = (0.4535 * 2) kg
                  =
0.907 kg

               
                 = 0.91
kg


Bobby dissolved the salt in 7 pints of water


We know


2.11 pints = 1 litre


Then


7 pints = (7/2.11) litre
             = 3.32
litres


So we now see that Bobby has dissolved 0.91 kg of salt in
3.32 litres of water


Marcia dissolved 1 kg of salt in 3 litres of water.


So Marcia has made a more concentrated solution since she
has dissolved more salt in less amount of water whereas Bobby has dissolved
less amount of salt in more water.





Related Questions