« previous next »

Author Question: Which of the following formula(s) best represent(s) Graham's law? I. II. III. IV. a. 1 ... (Read 86 times)

lindiwe

  • Hero Member
  • *****
  • Posts: 577
on: Jul 16, 2018
Which of the following formula(s) best represent(s) Graham's law?
 
  I.
  II.
  III.
  IV.
 
  a. 1 c. 2 and 4
  b. 3 d. 3 and 4

Question 2

Which gas has the lowest specific gravity at 25 C and 760 mm Hg?
 
  a. Water vapor c. CO2
  b. Helium d. O2


Toya9913

  • Sr. Member
  • ****
  • Posts: 341
Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: C
Graham's law states that when two gases are placed under the same temperature and pressure conditions, the rates of diffusion of the two gases are inversely proportional to the square root of their masses, or , where r1 and r2 represent the diffusion rates of the respective gases, and M1 and M2 are the molar masses. If the mass of a gas is considered directly proportional to its density at a constant temperature and pressure, then 2, where d1 and d2 are the densities of the gases in ques-tion.

Answer to Question 2

ANS: B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Did you know?

Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

Did you know?

Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.

Did you know?

Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

The tarsier is a haplorhine, and may represent an evolutionary bridge between lower and higher prima The tarsier is a haplorhine, and may represent an evolutionary bridge between lower and higher prima
Although average brain size increases gradually though time in H. erectus, individuals with small br Although average brain size increases gradually though time in H. erectus, individuals with small br
How to calculate regular payments or deposits using the annuity formula (Question 2) How to calculate regular payments or deposits using the annuity formula (Question 2)
Infant formula is available in several forms and varies in cost and ingredients Infant formula is available in several forms and varies in cost and ingredients
Black-Scholes Formula Black-Scholes Formula
Slope Formula Slope Formula
Video: Anaphylaxis Animation

For a complete list of videos, visit our video library