10 Essay 5 points Please identify the following components for the element Selenium: 1 Chemical Symbol 2. Atomic Number 3. Family \# 4. Valence Electrons 5. Category Edit View Insert Format Tools Table

Identify the reaction type for the reaction shown below: \( \mathrm{Na}+\mathrm{H}_{2} \mathrm{O} \rightarrow \mathrm{NaOH}+\mathrm{H}_{2} \)

Identify the reaction type for the reaction shown below: \( \mathrm{Cr}+\mathrm{H}_{2} \mathrm{SO}_{4} \rightarrow \mathrm{Cr}_{2}\left(\mathrm{SO}_{4}\right)_{3}+\mathrm{H}_{2} \) Single Displacement. Precipitation Neutralization Synthesis/Combination Decomposition

Concentrated HCl is 12.0 M . Determine the volume in mL of the concentrated solution required to produce 5500 mL of 0.250 M HCl .

Identify the reaction type for the reaction shown below: \( \mathrm{Na}+\mathrm{Br}_{2} \rightarrow \mathrm{NaBr} \)

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