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1. What makes network solids unique compared to other solids?
2. What is the importance of network solids in modern times? Explain your answer.
Study carefully each of the item and do what is
asked.
1. List the types of intermolecular forces that exist between molecules in each of
the following species: (a) benzene (C6H6), (b) CH3Cl, (c) PF3, (d) NaCl, (e) CS2.
2. Which of the following can form hydrogen bonds with water? CH3OCH3, CH4,
F,HCOOH, Na+
3. Which of the following species are capable of hydrogen-bonding among
themselves? (a) C2H6, (b) HI, (c) KF, (d) BeH2, (e) CH3COOH
4. Arrange the following in order of increasing boiling point: RbF, CO2, CH3OH,
CH3Br.
5. Which member of each of the following pairs of substances would you expect
to have a higher boiling point? (a) O2 and Cl2, (b) SO2 and CO2, (c) HF and HI
At 50°C, the vapor pressure of ethanol is 0.30 atm, acetic acid
is 0.08 atm, water is 0.12 atm, and acetone is 0.84 atm. Arrange these substances in
order of increasing manner:
1. rates of evaporation.
2. boiling point temperature.
3. vapor pressure.
4. viscosity.
5. intermolecular forces.
Using conversion method. Calculate the molality and molarity of aqueous phosphoric acid solution 1.88 g/ml containing 20% by mass of H3PO4
CH4+O2=CO2+H2O
using conversion method, calculate the molality and molarity of aqueous phosphoric acid solution 1.88 gram/ml containing 20% by mass of h3 po4? h=1 p=31,o=16
using conversion method, calculate the molality and molarity of aqueous phosphoric acid solution 1.88 gram/ml containing 20% by mass of h3 po4? h=1 p=31,o=16
Calculate the percentage abundance of Br-80 and the average atomic weight of bromine in a brine sample that contains 50.54% Br-79 (78.918 amu) and Br-80 (80.916 amu). Express percent abundance up to 2 decimal places
When 50.1 g
g iron(III) oxide reacts with carbon monoxide, 31.7 g
g iron is produced. What is the percent yield of the reaction?Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g)
How many grams of Fe2O3 forma 200 grams of Fe?
#339914 on Dec 2023