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Leokris [45]
4 years ago
7

When methane combines with oxygen, carbon dioxide and water are produced. How many methane molecules are needed to complete this

model and obey the law of conservation of matter? conservation of matter?
Physics
2 answers:
Black_prince [1.1K]4 years ago
8 0

<u>Answer:</u> Only 1 molecule of methane gas is required in the chemical equation.

<u>Explanation:</u>

Law of conservation of mass states that mass can neither be created nor be destroyed but it can only be transformed from one form to another form. This also means that total number of individual atoms on reactant side must be equal to the total number of individual atoms on the product side.

Every balanced chemical equation follows law of conservation of mass.

The chemical equation for the reaction of methane and oxygen gas follows:

CH_4+2O_2\rightarrow CO_2+2H_2O

By Stoichiometry of the reaction:

1 molecule of methane gas reacts with 2 molecules of oxygen gas to produce 1 molecule of carbon dioxide gas and 2 molecules of water.

Hence, only 1 molecule of methane gas is required in the chemical equation.

rosijanka [135]4 years ago
3 0

Answer:

C: one

Explanation: One .methane molecule should be added to the reactants side to balance the equation and obey the law of conservation of matter.

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Match each type of wave to the way it moves.
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Answer:

Transverse wave- Back and forth at right angles to the direction of the wave arrow.

longitudinal wave- bask and forth in the direction of the motion of the motion of the wave.

electromagnetic wave- two alternating waves moving at right angles to each other.

Explanation:

In a longitudinal wave, the particles vibrate at right angles in reference to the wave motion.

In a transverse wave, the particles vibrate parallel to the wave motion

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3 years ago
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5 0
3 years ago
A large ball of Play-Doh with a mass of 0.04kg is launched from a catapult with an initial
ryzh [129]

Answer:

  ≈ 6.68 m/s

Explanation:

A suitable formula is ...

  vf^2 -vi^2 = 2ad

where vi and vf are the initial and final velocities, a is the acceleration, and d is the distance covered.

We note that if the initial launch direction is upward, the velocity of the ball when it comes back to its initial position is the same speed, but in the downward direction. Hence the problem is no different than if the ball were initially launched downward.

Then ...

  vf = √(2ad +vi^2) = √(2·9.8 m/s^2·1.0 m+(5 m/s)^2) = √44.6 m/s

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The ball hits the ground with a speed of about 6.68 meters per second.

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We assume the launch direction is either up or down.

3 0
3 years ago
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solmaris [256]

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Explanation:

7 0
3 years ago
Two closed organ pipe gives 4 beats when sounded together at 5°C. Calculate the number of beats in 35°C​
Gre4nikov [31]

Answer:

The number of beats is 10.58 in 35°C.

Explanation:

The beat frequency is given by : f₁-f₂

At 5°C, f₁-f₂ = 4

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The frequency in a standing wave is proportional to \sqrt T.

So,

\dfrac{f_1-f_2}{f_1'-f_2'}=\dfrac{\sqrt {T}}{\sqrt{T'}}\\\\f_1'-f_2'=(f_1-f_2)\times \dfrac{\sqrt{T'}}{\sqrt{T}}\\\\f_1'-f_2'=4\times \dfrac{\sqrt{35}}{\sqrt{5}}\\\\f_1'-f_2'=10.58

So, the number of beats is 10.58 in 35°C.

7 0
3 years ago
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