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
Which structure is responsible for bringing in the amino acids? (Points : 1)
Rainbow [258]
Well the answer to number 1 is definitely B
 
number 2 is B

number 3 is D

Number 4 is C

Hope this helps:)



5 0
3 years ago
Read 2 more answers
What is the mass in grams of 0.687 moles of NH three
stepan [7]
NH3 = 14 +3*1=17 g/mol
Mass = mol * molar mass = 0.687 * 17= 11.679 g
Can u mark it brainliest?
3 0
3 years ago
Name the functional group in the<br> following molecule:
Anna71 [15]

Answer:

B. Aromatic

Explanation:

Functional groups are groups that differentiate a specific organic compound from others. A functional group determines the chemical property of the compound that possesses it.

For example, just like alkene and alcohol functional groups have characteristics double bond (=) and hydroxyl (OH) group respectively, the image in the attachment of this question has a BENZENE RING at the core of its structure, hence, the organic compound can be regarded to have an AROMATIC FUNCTIONAL GROUP.

4 0
3 years ago
The chemical equation shows the production of magnesium chloride.
Norma-Jean [14]

Answer:

1 gram of H2 will be produced from 12 grams of Mg.

Explanation:

According to Stoichiometry, 0.5 moles of Mg are present. 1 mole of Mg produces 1 mole of H2, so 0.5 moles of Mg will produce 0.5 moles of H2. Multiplying molar mass of H2 i.e. 2 gram/mole with 0.5 moles, we can find the mass of H2 in grams which is 1 gram.

3 0
3 years ago
The equilibrium concentrations of the reactants and products are [ HA ] = 0.260 M [HA]=0.260 M , [ H + ] = 2.00 × 10 − 4 M [H+]=
ValentinkaMS [17]

Answer:

pKa of the acid HA with given equilibrium concentrations is 6.8

Explanation:

The dissolution reaction is:

HA ⇔ H⁺ + A⁻

So at equilibrium, Ka is calculated as below

Ka = [H⁺] x [A⁻] / [HA] = 2.00 x 10⁻⁴ x 2.00 x 10⁻⁴ / 0.260

    = 15.38 x 10⁻⁸

Hence, by definition,

pKa = -log(Ka) = - log(15.38 x 10⁻⁸) = 6.813

7 0
3 years ago
Other questions:
  • Which of the following statements is true regarding bacteria and animal cells?
    10·1 answer
  • Which is true for every atom of an element?
    7·1 answer
  • 1 atm is equal to: <br> A. 1 mmHg <br> B. 14.7 mmHg <br> C. 76 mmHg <br> D. 760 mmHg
    11·2 answers
  • Electrophiles for the electrophilic aromatic substitution reactions have to be very strong to react with the stable aromatic rin
    5·1 answer
  • Propene is called an unsaturated hydrocarbon, why
    11·1 answer
  • Latitude plays a major role in determining the climate, or long-term weather patterns, of an area. Because of differences in the
    14·1 answer
  • How many protons does Tin have?<br>A. 50<br>B. 68<br>C. 118​
    10·1 answer
  • I NEED HELP ASAP ILL GIVE 10 POINTS​
    8·1 answer
  • What occurs along a convergent plate boundary
    15·1 answer
  • The provided balanced equation applies to the reaction that takes place between lithium hydroxide and sulfuric acid. 2LIOH + H,S
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!