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

Author Question: A chemist is given an unknown sample. Which of her observations is not a physical property? A) ... (Read 21 times)

bclement10

  • Hero Member
  • *****
  • Posts: 560
on: Aug 27, 2018
A chemist is given an unknown sample. Which of her observations is not a physical property?
 
  A) The sample is a colorless liquid.
  B) The sample has an odor similar to gasoline.
  C) The sample is flammable.
  D) The sample size is 55 mL.
  E) The density of the liquid is 0.789 g/mL.

Question 2

Why does the rate of effusion increase with a decrease in the molar mass?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Ksanderson1296

  • Sr. Member
  • ****
  • Posts: 339
Reply #1 on: Aug 27, 2018
Answer to Question 1

C

Answer to Question 2

The rate of effusion depends on the speed of the gas particles. As the molar mass decreases at a given temperature, the average speed of the particles increases, increasing the rate of effusion.


bclement10

  • Hero Member
  • *****
  • Posts: 560
Reply #2 on: Aug 27, 2018
Thanks


Ksanderson1296

  • Sr. Member
  • ****
  • Posts: 339
Reply #3 on: Aug 27, 2018
Welcome :)


« previous next »
 

Did you know?

Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

Did you know?

Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

Did you know?

Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.

Did you know?

Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.

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 Teaching Plan for Hypertension Cont. Sample Teaching Plan for Hypertension Cont.
Sample prescriptions of drugs for oral herpes infection. Sample prescriptions of drugs for oral herpes infection.
If the density of an unknown gas is 2.59 g/L at STP, what is its molar mass? If the density of an unknown gas is 2.59 g/L at STP, what is its molar mass?
An unknown gas occupies a volume of 1.50 L at 21 °C and 0.950 atm. If the mass i An unknown gas occupies a volume of 1.50 L at 21 °C and 0.950 atm. If the mass i
The relationship between recombination frequency and physical distance between genes The relationship between recombination frequency and physical distance between genes
Video: Epidural Hematoma

For a complete list of videos, visit our video library