« 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 39 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?

Anti-aging claims should not ever be believed. There is no supplement, medication, or any other substance that has been proven to slow or stop the aging process.

Did you know?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

Did you know?

Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.

Did you know?

The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

Did you know?

In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.

Population genetics sample question Population genetics sample question
Sample tiered drug formulary for antibiotics. Sample tiered drug formulary for antibiotics.
Sample of an insurance card. Sample of an insurance card.
Sample Medicare identification card. Sample Medicare identification card.
In a multiair engine design, the exhaust valves are opened by the exhaust camshaft lobes. Intake ... In a multiair engine design, the exhaust valves are opened by the exhaust camshaft lobes. Intake ...
An archaeological sample contains 0.700 g of lead-206 and 2.144 g of uranium-238. Assume that ... An archaeological sample contains 0.700 g of lead-206 and 2.144 g of uranium-238. Assume that ...
Video: Introduction to Sleep Apnea

For a complete list of videos, visit our video library