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

Author Question: Approximately how many elements occur naturally on Earth? A) 20 B) 60 C) 90 D) ... (Read 143 times)

waynest

  • Hero Member
  • *****
  • Posts: 553
on: Aug 27, 2018
Approximately how many elements occur naturally on Earth?
 
  A) 20
  B) 60
  C) 90
  D) 115

Question 2

What is the mass in grams of 1.000 mole of P2O5?
 
  A) 239.03 g
  B) 61.96 g
  C) 142.0 g
  D) 46.98 g


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Li Jun

  • Sr. Member
  • ****
  • Posts: 335
Reply #1 on: Aug 27, 2018
Answer to Question 1

C

Answer to Question 2

C


waynest

  • Hero Member
  • *****
  • Posts: 553
Reply #2 on: Aug 27, 2018
TY


Li Jun

  • Sr. Member
  • ****
  • Posts: 335
Reply #3 on: Aug 27, 2018
You're welcome


« previous next »
 

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Did you know?

Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

Did you know?

All adverse reactions are commonly charted in red ink in the patient's record and usually are noted on the front of the chart. Failure to follow correct documentation procedures may result in malpractice lawsuits.

Did you know?

The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.

Did you know?

Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

teach their children to care for the earth in hopes of passing on a better world to future generatio teach their children to care for the earth in hopes of passing on a better world to future generatio
Friction significantly influences airflow near Earth’s surface, but its effect is negligible at ... Friction significantly influences airflow near Earth’s surface, but its effect is negligible at ...
Diverticula Diverticula are small pouches that can occur along your colon Diverticula Diverticula are small pouches that can occur along your colon
Tardigrade wasn't correct, nor was Gastrotricha. What on earth is this asking me. Tardigrade wasn't correct, nor was Gastrotricha. What on earth is this asking me.
Elements of a phylogenetic tree Elements of a phylogenetic tree
Mutations in cis-regulatory elements of Ultrabithorax cause homeotic transformations Mutations in cis-regulatory elements of Ultrabithorax cause homeotic transformations
Video: Blood Test Basics

For a complete list of videos, visit our video library