Question

Which solution is more concentrated show work and EXPLAIN your reasoning

Solution A
2 L of water
135.75 g of MgO

or

Solution B
2 L of water
119.6 g of CaCl2

Answer 1

Solution A

Step-by-step explanation:

Solution A

1 mole of MgO = 24 + 16 = 40 g

? moles of MgO = 135.75g

`(135.75)/(75)` = 1.81 moles

1.81 moles of MgO is in 2 liters of water

? moles of MgO is in 1 liter of water

`(1.584)/(2)` = 0.905moles/liter or 0.905M

Solution B

1 mole of CaCl₂ = 40 + 35.5 = 75.5 g

? moles of CaCl₂ = 119.6g

`(119.6)/(75.5)` = 1.584moles

1.584 moles of MgO is in 2 liters of water

? moles of MgO is in 1 liter of water

`(1.584)/(2)`= 0.792moles/liter or 0.792M