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
brilliants [131]
3 years ago
10

WHICH CHEMICAL EQUATION IS BALANCED? A.H2O--->H2+202 B.2H20--->2H2+02 C.2H20---->H2+202 D.H20--->2H2+202

Chemistry
2 answers:
NeX [460]3 years ago
7 0
A.
the left side - 2 atoms of hydrogen, 1 atom of oxygen
the right side - 2 atoms of hydrogen, 4 atoms of oxygen
not balanced

B.
the left side - 4 atoms of hydrogen, 2 atoms of oxygen
the right side - 4 atoms of hydrogen, 2 atoms of oxygen
balanced

C.
the left side - 4 atoms of hydrogen, 2 atoms of oxygen
the right side - 2 atoms of hydrogen, 4 atoms of oxygen
not balanced

D.
the left side - 2 atoms of hydrogen, 1 atom of oxygen
the right side - 4 atoms of hydrogen, 4 atoms of oxygen
not balanced

The answer is B.
Alchen [17]3 years ago
3 0

Answer:

answer B

Explanation:

You might be interested in
Is obsidian a rock? Does it contain minerals? Help please!!
Aloiza [94]

Answer:Obsidian is a rock and it does include minerals.

Explanation:

3 0
2 years ago
Read 2 more answers
The state of California experiences periodic occurrences of severe drought conditions. Which weather phenomenon most likely caus
e-lub [12.9K]
I would say that La Nina is responsible for dry conditions in California and typically it is the year after La Nina that the dryness turns often to severe drought. Drought can be bad for agriculture requiring a lot more irrigation and posing a drain on water resources which decrease also during a drought,
8 0
3 years ago
What is the percent composition of the u.s quarter, which has the mass of 5.670g
Vitek1552 [10]
The percent composition of each element can be calculated as follows:
% composition = (mass of element / total mass) * 100

The total mass of the quarter is given to be 5.670 grams
Mass of Cu = 5.198 grams
Mass of Ni = 0.472 grams

Substitute in the above equation to get the mass percentage of each element as follows:
% of Cu = (5.198/5.670) * 100 = 91.675%
% of Ni = (0.472/5.670) * 100 = 8.325%
6 0
3 years ago
The melting points and boiling points of 4 substances are shown.
Serggg [28]

Answer:

it's

C. with melting point 11° C and boiling point 181° C

Explanation:

i hope you got it

4 0
2 years ago
A student observed a sample of water in three states of matter. The student should describe the liquid water as a state of matte
hodyreva [135]

Answer:

i say B

Explanation:

tell me if it is the right one

4 0
3 years ago
Other questions:
  • What is the vapor pressure of a 45.0 % solution of glucose, c6h12o6, at 90.0°c, given that the vapor pressure of pure water at t
    13·1 answer
  • Why is water not a good extraction solvent for trimyristin?
    5·1 answer
  • Drawing inferences from givens common core geometry homework answer key
    12·1 answer
  • Someone please help me
    8·1 answer
  • Which of the following was originally a tenet of Dalton's atomic theory, but had to be revised about a century ago?
    14·1 answer
  • 11. How did the solubility product constant Ksp of KHT in pure water compare to its solubility product constant Ksp of KHT in KC
    6·1 answer
  • Someone please ASAP<br> the options are <br> 1. BF.<br> 2.B4<br> 3.B2F2<br> 3.BF3
    13·1 answer
  • As a stove heats a pot, particles in the hot pot bump into particles of water 1 point
    12·1 answer
  • Describe what happens to the electrons when sodium and chlorine combine to make NaCl.
    9·1 answer
  • 2NH3+2O2- N2o+3H2O
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!