Which solution is more concentrated show work and EXPLAIN your reasoning Solution A 2 L of water 135.75 g of MgO

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

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Mộc Miên 3 years 2021-08-23T15:43:17+00:00 1 Answers 4 views 0

Answers ( )

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    2021-08-23T15:44:40+00:00

    Answer:

    Solution A

    Explanation:

    Solution A

    1 mole of MgO = 24 + 16 = 40 g

    ? moles of MgO = 135.75g

    \frac{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

    \frac{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

    \frac{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

    \frac{1.584}{2}= 0.792moles/liter or 0.792M

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