Question
How many milligrams of calcium chloride $\left(\mathrm{CaCl}_2\right.$, molecular weight $=$ $111 \mathrm{~g} / \mathrm{mol}$ ) are needed to prepare $3000 \mathrm{~mL}$ of solution containing $5 \mathrm{mEq} / \mathrm{L}$ of $\mathrm{C}^{+2}$ ?
Step 1
The molar mass of CaCl2 is 40.08 g/mol (for Ca) + 2(35.45 g/mol) = 110.98 g/mol. Show more…
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Emergency treatment of cardiac arrest victims sometimes involves injection of a calcium chloride solution directly into the heart muscle. How many grams of $\mathrm{CaCl}_{2}$ are administered in an injection of $5.0 \mathrm{~mL}$ of a $5.0 \%(\mathrm{~m} / \mathrm{v})$ solution? How many milliequivalents of $\mathrm{Ca}^{2+}$ ?
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