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
lora16 [44]
3 years ago
9

If you examined the human body on a chemical composition basis, which of the following combinations of elements would be most co

mmon?
A) O, C, N, Na
B) C, H, Ca, Cl
C) O, C, H, N
D) C, N, Ca, S
E) O, C, P, S
Chemistry
1 answer:
atroni [7]3 years ago
3 0

Answer:

C) O, C, H, N

Explanation:

Roughly 96% of the mass of the human body is made up of the four elements which are carbon, oxygen, hydrogen and nitrogen.

The elements, oxygen and hydrogen are found predominantly in water, which makes up 60% of body's weight approximately. Element carbon is synonymous with life. The central role of the element, carbon is due to the fact that the carbon has 4 bonding sites which allow the element for the building of long and the complex chains of molecules. Nitrogen is found in the organic molecules, including the amino acids which make up proteins, and nucleic acids which make up DNA.

You might be interested in
Identify balance chemical equation from the following
Furkat [3]

Answer:

C+O2=CO2

Explanation:

no.of atoms on reactant side= no.of atoms on product side

5 0
3 years ago
What are the correct coefficients when this equation is balanced?
larisa86 [58]

4, 3, 1

Explanation:

Sb has four on the right, so it needs four on the left. It's all alone, so <u>4</u>.

O2 comes in pairs, so you only need <u>3</u> of those to get six oxygens.

And 1 is the place holder for the right side since we got the left to match perfectly.

6 0
3 years ago
What is the name of the ionic compound RbCI
lorasvet [3.4K]
It would be Rubidium chloride.
6 0
4 years ago
The palmetto landfill in greer, sc supplies over 50% of the energy for the bmw plant there. this reduces carbon dioxide emission
Verdich [7]
Hello there!

The answer is 92000 tons per year

The palmetto landfill supplies methane (CH₄) for the BMW plant there. The gas is used to operate the turbines used to power the BMW campus. It reduces carbon dioxide emissions because the combustion of methane produces fewer CO₂ than the combustion of other gases like propane or butane, which are commonly used for powering turbines. 
4 0
3 years ago
In the decomposition of water, why is twice as much hydrogen as oxygen formed?(1 point)
Ugo [173]

Answer:

1. Which statement correctly describes the classification of chemical reactions into different categories?

-Not all reactions fit into a category, and some reactions can fit into more than one category.

2. In a synthesis reaction, two atoms of sodium (Na) combine with one molecule of chlorine gas (Cl2) to produce sodium chloride (NaCl). How many molecules of sodium chloride are produced?

-Two

3. In the decomposition of water, why is twice as much hydrogen as oxygen formed?

- There are two atoms of hydrogen and one atom of oxygen in a water molecule.

4. Which component is transferred between substances in an oxygen-reduction reaction?

-Electrons

5. In a chemical reaction, substance A transfers electrons to substance B. Which statement is correct?

-Substance B is reduced and acts as the oxidizing agent.

5 0
2 years ago
Other questions:
  • How many grams of O2(g) are needed to completely burn 46.0 g C3H8(g)?
    13·1 answer
  • How do you make life essence on little alchemy?<br> FIRST ONE to ANSWER gets BRAINLEST
    5·2 answers
  • What is the molar mass for Mn3O4?
    9·1 answer
  • Sarah heated some orange coloured crystals in a test tube. The crystals turned green and fizzed. After the fizzing stopped, the
    7·1 answer
  • What happens to water particles at boiling point
    8·2 answers
  • The Society of Automotive Engineers has established an accepted numerical scale to measure the viscosity of motor oil. For examp
    12·2 answers
  • Please Help!!!!! Need by 11:30
    6·1 answer
  • 0.15 grams of Mg is combined with HCl to
    13·1 answer
  • Many objects that conduct electricity or heat are made from this material
    14·1 answer
  • How many litres of hydrogen is present in 12 grams of hydrogen​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!