A. How many millimoles of magnesium chloride are there in 4 liters of 0.2 M MgCl2...

Question

Question

A. How many millimoles of magnesium chloride are there in 4 liters of 0.2 M M_gCl₂

a. How many nanomoles are in 2.3 x 10^-1 μmoles?

Answer 1

Answer #1

A)

4 liters of 0.2 M MgCl2 = volume of solution in L * molarity = 4.0 L * 0.2 mole / L = 0.8 mole.

we know,

1 mole = 1000 mmole.

thus

0.8 mole = 0.8 * 1000 = 800 mmole (answer)

a)

we know,

1 μmole = 1000 nanomoles

thus

2.3 x 10^-1 μmoles = 2.3 x 10^-1 * 1000 = 230 nanomoles (answer)

Answer 2

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