This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A sample of oxygen gas that contains one-half of Avogadro's number of molecules has a mass of ... (Read 58 times)

meagbuch

  • Hero Member
  • *****
  • Posts: 568
on: Aug 27, 2018
A sample of oxygen gas that contains one-half of Avogadro's number of molecules has a mass of ________.
 
  A) 8.0 g
  B) 16.0 g
  C) 32.0 g
  D) 64.0 g

Question 2

Equal numbers of moles for A and B are added to the reaction vessel and equilibrium established. At that point ________.
 
  A + 3B = 2C
  A) A < B
  B) A > B
  C) A = B
  D) One cannot say unless the equilibrium constant value is known.

Question 3

________ was the first person to propose a consistent modern atomic theory.
 
  A) Dalton
  B) Democritus
  C) Proust
  D) Lavoisier


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

bigcheese9

  • Sr. Member
  • ****
  • Posts: 333
Reply #1 on: Aug 27, 2018
Answer to Question 1

B

Answer to Question 2

B

Answer to Question 3

A


meagbuch

  • Member
  • Posts: 568
Reply 2 on: Aug 27, 2018
Gracias!

parshano

  • Member
  • Posts: 333
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.

Did you know?

Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Avogadro's number calculation Avogadro's number calculation
Factors affecting determination of pulse oxygen saturation Factors affecting determination of pulse oxygen saturation
Properties of some naturally occurring RNA molecules Properties of some naturally occurring RNA molecules
Half Leg of Lamb Half Leg of Lamb
The mole fraction of oxygen in dry air near sea level is 0.20948, where the molar mass of ... The mole fraction of oxygen in dry air near sea level is 0.20948, where the molar mass of ...
The effect of disruptive selection on bristle number in Drosophila The effect of disruptive selection on bristle number in Drosophila
Video: Random alignment at Metaphase I Animation

For a complete list of videos, visit our video library