3.48 The empirical formula of a compound is CH . If the molar mass of this compound is about 78 g , what is its molecular formula?

Concentrated NaOH is 19.0 M . Determine the volume in mL of the concentrated solutio required to produce 1800 mL of 1.77 M NaOH

What mass in grams of \( \mathrm{NaHCO}_{3} \) is required to make 59.3 mL of 2.68 M solution?

Concentrated \( \mathrm{HC}_{2} \mathrm{H}_{3} \mathrm{O}_{2} \) is 17.0 M . Determine the volume in mL of the concentrated solution required to produce 2800 mL of \( 0.656 \mathrm{M} \mathrm{HC}_{2} \mathrm{H}_{3} \mathrm{O}_{2} \)

Identify the reaction type for the reaction shown below: \( \mathrm{Cr}+\mathrm{H}_{2} \mathrm{SO}_{4} \rightarrow \mathrm{Cr}_{2}\left(\mathrm{SO}_{4}\right)_{3}+\mathrm{H}_{2} \)

Identify the reaction type for the reaction shown below: \( \mathrm{NaHCO}_{3} \rightarrow \mathrm{NaCO}_{3}+\mathrm{H}_{2} \mathrm{O}+\mathrm{CO}_{2} \)