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
Vitek1552 [10]
2 years ago
12

Select the correct answer. Which of the following is a correctly balanced equation? A. NaClO3 → NaCl + 3O2 B. 2HgO → 2Hg + O2 C.

2ZnS + O2 → 2ZnO + 2SO2 D. 4CO + Fe3O4 → 4CO2 + Fe E. 2Fe + 2Cl2 → 2FeCl3
Biology
1 answer:
Nikitich [7]2 years ago
3 0

The right answer is 2HgO → 2Hg + O2

Balancing a balance equation consists of finding the right stoichiometric coefficients. These coefficients (placed in front of each molecule) balance the number of each of the different atoms involved during a chemical reaction.

In this reaction, we find on both sides the same number of atoms: two oxygen atoms and two atoms of mercury.

You might be interested in
Does DNA undergoes translation to produce proteins . RNA undergoes mutation to produce cell walls
Alexandra [31]

Answer:

No

2. Yes

Explanation:

This is because DNA undergo transcription to produce RNA and RNA undergo translation to produce protein. Translation is the process where mRNA molecule is used as a template to produce protein.

RNA undergo mutation more than DNA and this is because the enzymes found in RNA viruses and participate in copying viral genomes is why it occur so. These enzymes does not have the abilities to recognize DNA damage that enzymes in most organisms have.

8 0
3 years ago
What is the density of a substance that weighs 4.2g and takes up a volume of 18cm3?
wlad13 [49]

The density would be 14.567 lb/cu ft

7 0
3 years ago
Read 2 more answers
Responsible for the flow of<br> ___, and other ______, and<br> hormones to and from.
egoroff_w [7]

Answer:

kidney

Explanation:

pancreas to regulate salt

6 0
2 years ago
The figure shows a negatively charged sphere and a balloon that has been rubbed with dry human hair. If the two are brought clos
nignag [31]
I am sure the answer is repel because human hair carries negative charges which mean they will repel because like things repel
4 0
3 years ago
Read 2 more answers
Which of the following results from a mark-recapture study done on mice would reflect a larger population size? When taking the
Lubov Fominskaja [6]

Answer:

Option (3).

Explanation:

Mark recapture method is used for the estimation of population size of an area. The individuals are identified by  some mark on them. The formula of mark recapture method is

N = M * C/ R

Here, N is the number of the individuals, M is the individuals are marked and captured, C is the individual captured again with mark or non mark and R is recaptured marked individual.

The individual with 200 population, 20 are marked for the first time represent the large population size.

Thus, the correct answer is option (3).

6 0
3 years ago
Other questions:
  • Which characteristic is common to all prokaryotes and eukaryotes
    13·1 answer
  • Adding sodium to chlorine gas will produce table salt. The formation of a new substance shows that __________ change occurred. A
    9·2 answers
  • In_____ both species benefit from the interaction.
    12·1 answer
  • Marge Simpson decided to start a new garden in her backyard. She heard that plants compete for space and decided to test this id
    6·2 answers
  • (85 POINTS!) A nerve signal is like a wave. How does this work?
    7·1 answer
  • Where does the first stage of cellular respiration, glycolosis, occur?
    15·2 answers
  • What albedo has to do with arctic sea Ice melt in you own explanation ​
    11·1 answer
  • EXPLAIN how plants allow all organisms on Earth to survive? (3-4 reasons required)
    7·1 answer
  • Which <br> of the following waves would u expect to have the most energy
    7·1 answer
  • Monosaccharides are the products of the chemical digestion of lipids. True or false?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!