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

Author Question: The half-life of cobalt-60 is 5.20 yr. How many milligrams of a 2.000-mg sample remain after 9.50 ... (Read 75 times)

james0929

  • Hero Member
  • *****
  • Posts: 586
on: Aug 27, 2018
The half-life of cobalt-60 is 5.20 yr. How many milligrams of a 2.000-mg sample remain after 9.50 years?
 
  A) 0.565
  B) 7.03  10-22
  C) 7.076
  D) 1.095
  E) 1.435

Question 2

How many carbons are there in heptane?
 
  A. Five
   B. Six
   C. Seven
   D. Eight


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

bob

  • Sr. Member
  • ****
  • Posts: 343
Reply #1 on: Aug 27, 2018
Answer to Question 1

A

Answer to Question 2

C


james0929

  • Member
  • Posts: 586
Reply 2 on: Aug 27, 2018
YES! Correct, THANKS for helping me on my review

bitingbit

  • Member
  • Posts: 323
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Asthma cases in Americans are about 75% higher today than they were in 1980.

Did you know?

The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

Did you know?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

Did you know?

The Food and Drug Administration has approved Risperdal, an adult antipsychotic drug, for the symptomatic treatment of irritability in children and adolescents with autism. The approval is the first for the use of a drug to treat behaviors associated with autism in children. These behaviors are included under the general heading of irritability and include aggression, deliberate self-injury, and temper tantrums.

Did you know?

The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

DNA replication is the basis for the perpetuation of life through time DNA replication is the basis for the perpetuation of life through time
Ascomycetes Life Cycle Ascomycetes Life Cycle
French and U.S. presidential elections in 2012 illustrate the durability of political culture and ho French and U.S. presidential elections in 2012 illustrate the durability of political culture and ho
This cover of Life (1925) offered a stereotypical rendering of the new generation: a young couple .. This cover of Life (1925) offered a stereotypical rendering of the new generation: a young couple ..
Sample Exercise Program for Limited Older Adults (cont.) Sample Exercise Program for Limited Older Adults (cont.)
Sample prescriptions of antibiotics for dental infections. Sample prescriptions of antibiotics for dental infections.
Video: Glucose Evaluation Procedure

For a complete list of videos, visit our video library