« previous next »

Author Question: What elements do the symbols H, O, C, and N stand for? a. hydrogen, ozone, carbon, nitrogen b. ... (Read 15 times)

Mr3Hunna

  • Hero Member
  • *****
  • Posts: 536
on: Jul 28, 2018
What elements do the symbols H, O, C, and N stand for?
 a. hydrogen, ozone, carbon, nitrogen
  b. hydrogen, oxygen, chlorine, nitrogen
  c. hydrogen, oxygen, carbon, natrium
  d. hydrogen, oxygen, carbon, nitrogen
  e. none of the above

Question 2

In the chemical formula for water, H2O, what does the 2 mean?
 a. There are two oxygen (O) atoms in a molecule of water.
  b. There are two hydrogen (H) atoms in a molecule of water.
  c. The hydrogen in water is actually deuterium.
  d. none of the above


vish98

  • Sr. Member
  • ****
  • Posts: 326
Reply #1 on: Jul 28, 2018
Answer to Question 1

D

Answer to Question 2

B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Did you know?

Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.

Did you know?

A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.

Did you know?

The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

Energy Level Diagram of Hydrogen Energy Level Diagram of Hydrogen
Common Abbreviations and Symbols Used by Massage Therapists Cont Common Abbreviations and Symbols Used by Massage Therapists Cont
Performance Elements in the Art of Massage Performance Elements in the Art of Massage
The WISER entry for hydrogen cyanide (bottom). Useful information includes detailed health ... The WISER entry for hydrogen cyanide (bottom). Useful information includes detailed health ...
The WISER entry for hydrogen cyanide (bottom). Useful information includes detailed health ... The WISER entry for hydrogen cyanide (bottom). Useful information includes detailed health ...
Core-promoter elements found in focused promoters Core-promoter elements found in focused promoters
Video: hGH, Thyroid hormones & Aldosterone

For a complete list of videos, visit our video library