1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
abruzzese [7]
3 years ago
7

What elements are present in this formula? : C7H8N4O2, How many atoms of each element are in this molecule? what patterns do you

notice between these elements on the periodic table?
Chemistry
2 answers:
Anna11 [10]3 years ago
8 0

Answer:

1) 21 atoms are present: seven of carbon, eight of hydrogen, four of nitrogen and two of oxygen.

2) They all belong to different groups.

Explanation:

The following elements are present

carbon

hydrogen

oxygen

nitrogen.

The number of atoms of each element in the molecular formula is represented by the subscript.

The formula given is:C₇H₈N₄O₂

C₇ : It means seven atoms of carbon

H₈: It means eight atoms of hydrogen

N₄: It means four atoms of nitrogen

O₂: It means two atoms of oxygen.

The pattern is that all the elements belong to different groups in the periodic table.

Apart from hydrogen all other three elements are of same period also.

iragen [17]3 years ago
3 0

carbon, hydrogen, nitrogen, and oxygen. the number infront is how many of each element there are, they are increasing and decreasing

You might be interested in
What limitation is placed on electrons in the bohr model of the atom?
Olegator [25]
I thinking the limitation is that a shifting electron will always move from a more excited states to a less excited state. Electrons could not circle the nucleus because they would lose energy by emitting electromagnetic radiation and spiral into the nucleus. In addition Bohr was not able to explain electrons orbits of large atom w/many electrons.
4 0
3 years ago
Two positively charged objects (N pole) are separated by a large distance. One of the positively charged objects (N pole) is rep
Eddi Din [679]

Answer:

B

Explanation:

Applying law of electrostatic which states that like charges repel each other and unlike charges attract each other

N and S are unlike charges that turn and make the former repulsive force (due to two like charges N and N)to <em>reduce</em> and attractive force between N and S to <em>increa</em><em>se</em>

6 0
3 years ago
How many atoms of hydrogen-1 are in a 1.007-g sample?
Greeley [361]
I think it's 2 I tried looking it up because I was not sure.
8 0
3 years ago
Calculate the molar mass for each of the following compounds 7. PbSO
Simora [160]

Answer:

Fe3(PO4)2

Explanation:

calculate the molar mass for each of the following compounds 7. PbSO

8. Ca(OH)2

9. Na3PO4

10. (NH4)2CO3

11. C6H12O6

12. Fe3(PO4)2

13. (NH4)2S

14. Zn(C2H3O2)2

5 0
2 years ago
An object should float in a liquid if it is
Reptile [31]
Less dense than the liquid
6 0
2 years ago
Other questions:
  • A solution was prepared by dissolving 2.2 g of an unknown solute in 16.7 g of CCl4. A thermal analysis was performed for this so
    14·1 answer
  • Centigrams Conversion Calculator convert 15 og to milligrams
    15·1 answer
  • Is how much a material opposes electric current.
    15·1 answer
  • How many grams of sodium are in 10g. of aodium sulfate
    15·2 answers
  • How many oxygen atoms are present in 2.35 Mol of calcium phosphate?​
    8·1 answer
  • What kind of graph is this?
    6·2 answers
  • Help i dont know what im doing
    8·2 answers
  • What happens to the atoms during a chemical reaction
    14·1 answer
  • Determine the gram-formula mass of stearin acid C17H35COOH
    13·1 answer
  • A lone pair must reside in which orbital type(s) to participate in resonance/conjugation/delocalization?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!