Question 7 (1 point) 3
A 225 mL gas syringe was at a pressure of 99.3 kPa at 15.0 °C. On the following day,
the temperature increased to 25.9 °C and the new volume was 221.2 mL. What was
the atmospheric pressure on this day?

Work for the question above:

When determining the shape of a molecule, it is important to draw a lewis dot structure first in order to see the total number a. electrons within the moleculeb. bonding and unshared pairs around central atomc. unshared pair within the molecule( i really need it )

8.98 dm3 of hydrogen gas is collected at 38.8 °c. find the volume the gas will occupy at -39.9 °c if the pressure remains constant.

Which of the following units is not an official si unit