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

Author Question: A lungful of air (500 mL) contains 4.1 CO2 by volume. How many grams of KO2(s) is needed to remove ... (Read 38 times)

jjjetplane

  • Hero Member
  • *****
  • Posts: 556
on: Aug 27, 2018
A lungful of air (500 mL) contains 4.1 CO2 by volume. How many grams of KO2(s) is needed to remove the CO2 from a lungful of air at STP according to the following reaction?
 
  4 KO2(s) + 2 CO2(g)  2 K2CO3(s) + 3 O2(g)
  A) 0.065 g
  B) 0.13 g
  C) 0.26 g
  D) 1.2 g

Question 2

What is the term for an investigation that entails performing an experiment, proposing a
  hypothesis, testing the hypothesis, and stating a theory or law?
 
  A) alchemy
  B) chemistry
  C) science
  D) scientific method
  E) none of the above


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Dunkey

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

B

Answer to Question 2

D)


jjjetplane

  • Hero Member
  • *****
  • Posts: 556
Reply #2 on: Aug 27, 2018
Thanks


Dunkey

  • Sr. Member
  • ****
  • Posts: 333
Reply #3 on: Aug 27, 2018
Welcome :)


« previous next »
 

Did you know?

The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

Did you know?

In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

Did you know?

Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.

Did you know?

In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Rutherford's gold foil experiment demonstrating that most of the volume of an atom is empty spa Rutherford's gold foil experiment demonstrating that most of the volume of an atom is empty spa
Compression ratio is the ratio of the total cylinder volume (when the piston is at the bottom of ... Compression ratio is the ratio of the total cylinder volume (when the piston is at the bottom of ...
Use a grinder or a file to remove the mushroom material on the end of a punch or chisel. Use a grinder or a file to remove the mushroom material on the end of a punch or chisel.
Remove all of the spark plugs. Be sure to mark the spark plug wires so that they can be reinstalled ... Remove all of the spark plugs. Be sure to mark the spark plug wires so that they can be reinstalled ...
Two areas of reduced cortical volume and one area of increased cortical volume observed in people ... Two areas of reduced cortical volume and one area of increased cortical volume observed in people ...
A solution is 2.25% by weight NaHCO3. How many grams of NaHCO3 are in 250.0 g of solution? A solution is 2.25% by weight NaHCO3. How many grams of NaHCO3 are in 250.0 g of solution?
Video: Major Elements in Biological Molecules: Nucleic acids

For a complete list of videos, visit our video library