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 14 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?

Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

Did you know?

The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

Did you know?

Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.

Cystoscopy. In this procedure, a specialized endoscope with a rigid tube, known as a cystoscope, is Cystoscopy. In this procedure, a specialized endoscope with a rigid tube, known as a cystoscope, is
Choose the telephone unit that offers the features needed in your office. Choose the telephone unit that offers the features needed in your office.
Bolts and screws have many different heads. The head determines what tool is needed. Bolts and screws have many different heads. The head determines what tool is needed.
A whistle stop used to find top dead center. Remove the spark plug and install the whistle stop, ... A whistle stop used to find top dead center. Remove the spark plug and install the whistle stop, ...
Water (Its Volume Expansion Upon Freezing) Water (Its Volume Expansion Upon Freezing)
0.123 g of a gas occupy a volume of 124 mL at 120. °C and 760. torr. The possible formula of ... 0.123 g of a gas occupy a volume of 124 mL at 120. °C and 760. torr. The possible formula of ...
Video: Gastrin (protein digestion)

For a complete list of videos, visit our video library