« previous next »

Author Question: A sample of gas (1.9 mol) is in a flask at 21 C and 697 mm Hg. The flask is opened and more gas is ... (Read 115 times)

Deast7027

  • Hero Member
  • *****
  • Posts: 538
on: Aug 27, 2018
A sample of gas (1.9 mol) is in a flask at 21 C and 697 mm Hg. The flask is opened and more gas is added to the flask. The new pressure is 841 mm Hg and the temperature is now 26 C. There are now ________ mol of gas in the flask.
 
  A) 1.6
  B) 2.3
  C) 2.9
  D) 3.5
  E) 0.28

Question 2

Combustion analysis of an unknown compound containing only carbon and hydrogen produced 4.554 g of CO2 and 2.322 g of H2O. What is the empirical formula of the compound?
 
  A) CH2
  B) C2H5
  C) C4H10
  D) C5H2
Chemistry: The Central Science ¦ Brown, LeMay, Bursten ¦ 14th Edition
Buy Test-Bank


dawsa925

  • Sr. Member
  • ****
  • Posts: 326
Reply #1 on: Aug 27, 2018
Answer to Question 1

B

Answer to Question 2

B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

There are immediate benefits of chiropractic adjustments that are visible via magnetic resonance imaging (MRI). It shows that spinal manipulation therapy is effective in decreasing pain and increasing the gaps between the vertebrae, reducing pressure that leads to pain.

Did you know?

Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.

Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

Did you know?

Carbamazepine can interfere with the results of home pregnancy tests. If you are taking carbamazepine, do not try to test for pregnancy at home.

Did you know?

The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.

Ethnic Differences in Financial Support for College Based on a sample of 304 emerging adults aged 2 Ethnic Differences in Financial Support for College Based on a sample of 304 emerging adults aged 2
Sample Program for Changing Daily Caloric Intake (cont.) Sample Program for Changing Daily Caloric Intake (cont.)
ABO and Rh grouping using gelatin centrifugation. The blood sample above is AB negative as indicated ... ABO and Rh grouping using gelatin centrifugation. The blood sample above is AB negative as indicated ...
Sample prescriptions of drugs for oral fungal infections. Sample prescriptions of drugs for oral fungal infections.
Sample time management planning chart for a massage student. Sample time management planning chart for a massage student.
Sample Inclusion for Various s Sample Inclusion for Various s
Video: Stomach peristalsis - Movement of Food Through the Small Intestine

For a complete list of videos, visit our video library