This topic contains a solution. Click here to go to the answer

Author Question: How many moles are there in 2.00 kg of copper? The atomic weight of copper is 63.5 g/mol and its ... (Read 310 times)

kaid0807

  • Hero Member
  • *****
  • Posts: 515
How many moles are there in 2.00 kg of copper? The atomic weight of copper is 63.5 g/mol and its density is 8.90 g/cm3.
 
  A) 31.5 B) 15.3 C) 53.1 D) 51.3

Question 2

A pion is an unstable particle that has a mean lifetime of 2.55  10-8 s.
 
  This is the time interval between its creation in a nuclear process and its extinction into decay products, as measured in a frame of reference at rest with respect to the pion. An average pion is traveling at 0.230c relative to Earth. How far does it travel in its lifetime, relative to Earth?
  A) 2.23 m B) 3.50 m C) 2.07 m D) 1.81 m E) 3.22 m



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Expo

  • Sr. Member
  • ****
  • Posts: 351
Answer to Question 1

A

Answer to Question 2

D




kaid0807

  • Member
  • Posts: 515
Reply 2 on: Jul 29, 2018
YES! Correct, THANKS for helping me on my review


pangili4

  • Member
  • Posts: 346
Reply 3 on: Yesterday
Great answer, keep it coming :)

 

Did you know?

Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

Did you know?

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

Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Did you know?

Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

Did you know?

Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

For a complete list of videos, visit our video library