Example: Compound formula: MgCl_(2) Element: Mg If of Atoms: 1 Element: CI if of Atoms: 2 gram formula weight (g): 95.21 Compound Formula: HCI Element: H If of Atoms: square Element: CI II of Atoms: square : gram formula weight (g) square

To fill in the blanks for the compound formula \( \text{HCl} \):<br /><br />1. **Element: H**<br /> - Number of Atoms: \( 1 \)<br /><br />2. **Element: Cl**<br /> - Number of Atoms: \( 1 \)<br /><br />3. **Gram Formula Weight (g):**<br /><br /> To calculate the gram formula weight of \( \text{HCl} \), we need to add the atomic weights of hydrogen (H) and chlorine (Cl).<br /><br /> - Atomic weight of H = 1.01 g/mol<br /> - Atomic weight of Cl = 35.45 g/mol<br /><br /> Therefore, the gram formula weight of \( \text{HCl} \) is:<br /><br /> \[<br /> 1.01 \, \text{g/mol} + 35.45 \, \text{g/mol} = 36.46 \, \text{g/mol}<br /> \]<br /><br />So, the completed information for \( \text{HCl} \) is:<br /><br />- Element: H<br /> - Number of Atoms: \( 1 \)<br />- Element: Cl<br /> - Number of Atoms: \( 1 \)<br />- Gram Formula Weight (g): \( 36.46 \)