total pressure = ( 705 torr + 231.525torr) = 936.525torr
Answer:
10437calories
Explanation:
The following data were obtained from the question given:
M = 347.9g
C = 4.2J/g°C
T1 = 25°C
T2 = 55°C
ΔT = 55 — 25 = 30°C
Q =?
Q = MCΔT
Q = 347.9 x 4.2 x 30
Q = 43835.4J
Converting this to calories, we obtained the following:
4.2J = 1 calorie
43835.4J = 43835.4/ 4.2 = 10437calories
Answer:
One urea molecule can make hydrogen bonding with 8 water molecules
Explanation:
- Hydrogen bonding takes place between lone pair of electronegative atoms (O,N and F) and H atom attached with those electronegative atoms.
- Draw the lewis structure of urea and determine how many lone pairs and H atoms are available for hydrogen bonding formation.
- Theoretically one urea can make hydrogen bonding with 8 water molecules.
- Representation of hydrogen bonding has been given below.