b. A sample of 50 g of ethanol, increases in temperature from \( 0^{\circ} \mathrm{C} \) to \( 25^{\circ} \mathrm{C} \). What is the amount of energy absorbed? Specific heat of ethanol is \( 2.42^{\circ / g^{\circ} \mathrm{C}} \) \[ q=(25)(50)(2.42)=3,025 \mathrm{~J}-0^{\circ}-\mathrm{C}=25^{\circ} \]

Please select polar molecule(s) from the following. \( \square \mathrm{CCl} 4 \) \( \square \mathrm{CHCl} 3 \) \( \square \mathrm{CO} 3 \) CO 2

Please select polar molecule(s) from the following. NH3 BF3 PF5 PF3

Please select the molecule(s) that 1) its molecular shape is different from its electron group shape, and/or 2) the central bonds are not identical. NH3 BF3 PFF PF3

Based on your worksheet results, please match the following: The electron group geometry of NH 3 is The electron group geometry of BF 3 is [Choose ] The electron group geometry of \( \mathrm{PF5} \) is [Choose ] [Choose ] electron group geometry of SF4 is geometry of PF 3 is [Choose ]

Please select the molecule(s) with resonance structures from the following. CCl 4 CHCl 3 SO 3 H 2 O None