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
AlexFokin [52]
3 years ago
7

Which of the following is a balanced equation?Select one:a. Ab. Bc. Cd. D​

Chemistry
2 answers:
Nadusha1986 [10]3 years ago
6 0

Answer:

so A

Explanation:

balanced chemical equation occurs when the number of the different atoms of elements in the reactants side is equal to that of the products side. Balancing chemical equations is a process of trial and error

podryga [215]3 years ago
5 0

Answer:

D

Explanation:

KClO3 ==> KCl + O2

         1  K  1

         1  Cl  1

         3  O  2

There are a different amount of oxygen atoms so this equation is not balanced

KClO3 ==> 3KCl + O2

        1  K  3

        1  Cl 3

         3 O 2

None of the elements have the same number of atoms on either side of the equation therefore this equation is not balanced.

2KClO3 ==> KCl + 3O2

          2  K   1

          2  Cl  1

          6  O   6

The number of potassium atoms and chlorine atoms is different on both sides of the equation therefore this equation is not balanced.

2KClO3 ==> 2KCl + 3O2

          2  K   2

          2  Cl  2

          6  O   6

The number of atoms of each element are the same on both sides therefore this equation is balanced.

You might be interested in
11. Why is HCl a strong acid and HClO a weak acid?
ankoles [38]
Strong acid:dissolves and dissociates 1005 to produce protons (H+) 1. seven
strong acids: HCI, HBr, HI, HNO3, H2SO4, and HCIO3. ...
weak acid: dissolves but less than 100% dissociates to produce protons (H+) 1.
3 0
3 years ago
what do Mars, Mercury, and Venus have in common? A. They have a gas surface composition and a thick atmosphere. b They have many
mario62 [17]

Answer:

the best guess would have to be C

3 0
3 years ago
2CO + O2 → 2002
Reika [66]

Answer:

B: Increasing the volume inside the reaction chamber

Explanation:

5 0
3 years ago
Helppppppppppppppppppppppppp
bezimeni [28]
The awnser would be c i got you fam
7 0
3 years ago
Read 2 more answers
A 2. 75-l container filled with co2 gas at 25°c and 225 kpa pressure springs a leak. When the container is re-sealed, the pressu
Serjik [45]

The number of moles of gas lost is  0.0213 mol. It can be solved with the help of Ideal gas law.

<h3>What is Ideal law ?</h3>

According to this law, "the volume of a given amount of gas is directly proportional to the number on moles of gas, directly proportional to the temperature and inversely proportional to the pressure. i.e.

PV = nRT.

Where,

  • p = pressure
  • V = volume (1.75 L = 1.75 x 10⁻³ m³)
  • T =  absolute temperature
  • n = number of moles
  • R =  gas constant, 8.314 J*(mol-K)

Therefore, the number of moles is

n = PV / RT

State 1 :

  • T₁ = (25⁰ C = 25+273 = 298 K)
  • p₁ = 225 kPa = 225 x 10³ N/m²

State 2 :

  • T₂ = 10 C = 283 K
  • p₂ = 185 kPa = 185 x 10³ N/m²

The loss in moles of gas from state 1 to state 2 is

Δn = V/R (P₁/T₁ - P₂/T₂ )

V/R = (1.75 x 10⁻³ m³)/(8.314 (N-m)/(mol-K) = 2.1049 x 10⁻⁴ (mol-m²-K)/N

p₁/T₁ = (225 x 10³)/298 = 755.0336 N/(m²-K)

p₂/T₂ = (185 x 10³)/283 = 653.7102 N/(m²-K)

Therefore,

Δn = (2.1049 x 10⁻⁴ (mol-m²-K)/N)*(755.0336 - 653.7102 N/(m²-K))

    = 0.0213 mol

Hence, The number of moles of gas lost is 0.0213 mol.

Learn more about ideal gas here ;

https://brainly.in/question/641453

#SPJ1

3 0
2 years ago
Other questions:
  • How much of a 1.00 mg sample of americium remains after 3 half-lives?
    13·2 answers
  • 2) According to the Bronsted-Lowry theory, what does H2O act as in the
    12·1 answer
  • Coffee is decaffeinated industrially using supercritical (sc) CO2. One advantage to using scCO2 is that the polarity of the supe
    12·1 answer
  • A hot lump of 30.5 g of iron at an initial temperature of 52.7 °C is placed in 50.0 mL H2O initially at 25.0 °C and allowed to r
    7·1 answer
  • Explain why the catalyst is used as a very fine powder and larger pieces of iron are not used.
    7·1 answer
  • What is the difference between a polar and a nonpolar bond?And how can i figure out if its polar or nonpolar in a bond question?
    9·2 answers
  • Which of the following uses electrical energy?
    6·2 answers
  • 3. True or False: White light is a mixture of all colors of the visible
    8·2 answers
  • Describe how water contributes to the fitness of the environment to support life.
    10·1 answer
  • The energy of the ground state in the bohr model is -13. 6 ev. the energy of the n = 2 is:_______
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!