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

Author Question: The natural abundance of calcium in the earth's crust is 3.4% by mass. How many calcium atoms are ... (Read 98 times)

ec501234

  • Hero Member
  • *****
  • Posts: 573
on: Jul 8, 2021

Question 1

The mass number of an atom of 14C is:
◦ 6
◦ 20
◦ 8
◦ 14
◦ 10

Question 2

The natural abundance of calcium in the earth's crust is 3.4% by mass. How many calcium atoms are present in a 1.50 g sample of the earth's crust?
◦ 6.6 × 1023 atoms
◦ 3.1 × 1022 atoms
◦ 7.7 × 1020 atoms
◦ 7.7 × 1022 atoms
◦ 5.1 × 1020 atoms
General Chemistry: Principles and Modern Applications ¦ Petrucci, Herring, Madura, Bissonnette ¦ 11th Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by ec501234 on Jul 8, 2021

bitingbit

  • Sr. Member
  • ****
  • Posts: 323
Reply #1 on: Jul 8, 2021
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 29% of students answer this correctly


ec501234

  • Member
  • Posts: 573
Reply 2 on: Jul 8, 2021
Gracias!

deja

  • Member
  • Posts: 332
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.

Did you know?

The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

Did you know?

Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.

Did you know?

Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

The Mass-Luminosity Relation The Mass-Luminosity Relation
Normal depolarization of the motor end plate: (a) Depolarization: Ach causes calcium to be released ... Normal depolarization of the motor end plate: (a) Depolarization: Ach causes calcium to be released ...
Precession: Earth’s axis rotates, or “wobbles” Precession: Earth’s axis rotates, or “wobbles”
Functions of Vitamin D Vitamin D Helps Bone Health by Regulating Calcium and Phosphorus Functions of Vitamin D Vitamin D Helps Bone Health by Regulating Calcium and Phosphorus
Early Earth Early Earth
A Model of Natural Selection Favoring the Heterozygous Genotype A Model of Natural Selection Favoring the Heterozygous Genotype
Video: Phlebotomy

For a complete list of videos, visit our video library