An intravenous solution contains 2.5 mEq/L of magnesium ions. How many moles of magnesium are in 750 mL of this solution?

.9375 x 10⁻³ moles .

Explanation:

2.5 mEq / L of Magnesium ion

2.5 x 10⁻³ Eq / L

= 2.5 x 10⁻³ / 2 mole / L    [  1 mole = 2 Eq ]

= 1.25 x 10⁻³ mole / L

1 L contains 1.25 x 10⁻³ mole

750 mL = .75 x 1.25 x 10⁻³ mole

= .9375 x 10⁻³ mole .

So 750 mL contains .9375 x 10⁻³ moles .

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explanation:

covalent bonds

consist of pairs of electrons shared by two atoms, and bind the atoms to fixed orientation and requre high energies to break them

ionic bonds

when two atoms differ considerably in their electronegativity, then one of the atoms will lose its electron to the other atom. this results in a positively charged ion(cation) and a negatively charged ion (anion)

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