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 29 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?

Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.

Did you know?

Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.

Did you know?

Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

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.

Did you know?

Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

The nurse uses a noninvasive bladder ultrasound to measure the client’s bladder volume. The nurse uses a noninvasive bladder ultrasound to measure the client’s bladder volume.
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.
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. Its molar mass is ... 0.123 g of a gas occupy a volume of 124 mL at 120. °C and 760. torr. Its molar mass is ...
What volume of liquid would be dispensed by a P200 set to this volume? P200 Image 1.jpg What volume of liquid would be dispensed by a P200 set to this volume? P200 Image 1.jpg
Given that sodium chloride is 39.0% sodium by mass, how many grams of sodium chl Given that sodium chloride is 39.0% sodium by mass, how many grams of sodium chl
Video: Transcription - Introns and exons

For a complete list of videos, visit our video library