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
Lemur [1.5K]
3 years ago
7

How does the law of conservation of mass apply to this reaction: C2H4 + O2 → H2O + CO2?

Physics
2 answers:
zhannawk [14.2K]3 years ago
7 0

The correct answer is D. The law of conservation of mass states that in a system matter can neither be created or destroyed, hence atoms of each element on reactant side should equal atoms of each element on product side. In the unbalanced equation:

C_2H_4 + O_2 ==> H_2O + CO_2, the are 2 carbon atoms on reactant side as opposed to 1 carbon atom on product side,  there are 4 hydrogen atoms on reactant side as opposed to 2 hydrogen atoms on product side, and there are 2 oxygen atoms on reactant side as opposed to 3 atoms of oxygen on product side. To balance the equation we add a coefficient of 3 on O_2 and on the product side we put a coefficient of 2 on both water H_2O and carbon dioxide CO_2.

C_2H_4 + 3O_2 ==> 2H_2O + 2CO_2.

kicyunya [14]3 years ago
4 0

The answer is a

the equation needs to be balanced. There are fewer oxygen atoms in the equation than hydrogen or a carbon

You might be interested in
In order to transmit information via radio waves, the waves need to be changed somehow. For car radios this can happen in two wa
laila [671]

Answer: amplitude

Explanation: This describes the maximum amount of the displacement of a particle from it rest position. Usually, it is measured in metres

Since we are considering AM which is amplitude modulation, a technique used in electronic communication, most commonly for broadcasting information through a radio carrier wave. In amplitude modulation, the amplitude (signal strength) of the carrier wave is diversified in proportion to that of the message signal being broadcasted.

7 0
4 years ago
Jayden was given a marshmallow and a syringe in class to experiment with. She placed the marshmallow in the syringe and sealed t
Tju [1.3M]
<h2>Answer:</h2>

The correct option is A.

A) The increased pressure, pushed the molecules closer together, and caused the marshmallow to shrink.

<h2>Explanation:</h2>

Jayden experimented, she placed the marshmallow in the syringe and sealed the end. When she depressed the plunger of the syringe, the pressure increased and pushed the molecules closer together and causes the marshmallow to shrink.

<h2 />
3 0
3 years ago
A pendulum oscillates 12 times in 4 seconds. what is the length of the pendulum?
seraphim [82]

Answer:

L = 2.8 cm

Explanation:

Period T = 4 / 12 = 1/3 s

T = 2π√(L/g)

L = (T/2π)²g

L = ((1/3)/2π)²9.8 = 0.02758... ≈ 2.8 cm

6 0
3 years ago
The current in the circuit shown is 2.0 A.
andrezito [222]

The value of R3 is A) 10 Ω

8 0
3 years ago
Read 2 more answers
How does medium affect the level/amplitude of sound?
Romashka-Z-Leto [24]
Stop drunk drive fast go
7 0
3 years ago
Other questions:
  • A brick falls from a wall to the ground 3.42 m below. How much time will it take to
    9·1 answer
  • Average distance of 160.0 cm. Its average time was 5.74 seconds. What is its average speed?
    6·1 answer
  • Why might a scientist want to use a model to study the solar system? O A. Its extreme simplicity makes it difficult to see patte
    15·2 answers
  • a police car drives with a constant speed of 24 miles per hour .how long will it take to travela distance of 72 miles​
    13·1 answer
  • What is the period of a satellite in a circular orbit just above the surface of the Moon? The Moon’s mass is 7.36 × 1022 kilogra
    10·2 answers
  • What is the correct displacement for the following vectors: 4 km south, 2 km north, 5 km south, and 5 km north? 2 km south 16 km
    7·1 answer
  • Does anyone know how to solve this??
    6·1 answer
  • Explain why air is not used as a<br>brake fluid ​
    10·1 answer
  • When you push on a stationary object on a horizontal surface and it doesn't move, what kind of force is most likely opposing you
    15·1 answer
  • How are velocity and acceleration related
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!