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Tatiana [17]
3 years ago
11

Maria and Miquel were enjoying the fireworks when they got into a chemistry argument. Maria insisted that the fireworks were the

result of a chemical reaction. Miguel disagreed. What would you tell them to solve this argument? A) It is a change of state, solid to gas, due to the addition of energy. B) It was a physical reaction since the fuse was lit and heat was produced. C) The color changes and the release of energy indicate a chemical reaction. D) It is an endothermic reaction because energy was added; therefore it is a chemical reaction, Eliminate
Physics
2 answers:
mart [117]3 years ago
8 0

the answer is C, The color changes and the release of energy indicate a chemical reaction. hope that helps, :)

Tcecarenko [31]3 years ago
5 0
In this case, there is a chemical reaction where there is the burning of fuels that can vary between some within the periodic table, but when the fuel is burned a reaction occurs that gives the coloration the explosions of the fires.
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Newton
vodomira [7]

Given parameters:

Mass on earth  = 50kg

Unknown:

Mass on planet Xenon = ?

Weight on planet Xenon = ?

Mass is the amount of matter contained in a particular substance.

Weight is the force on a body and it is derived from the product of mass and acceleration due to gravity.

         Weight  = mass x acceleration due to gravity

Planet Xenon has half the gravitational force of Earth.

 This translated gives \frac{9.8}{2}   = 4.9m/s²

Now, mass is always the same every where if the amount of matter in a substance does not change.

In this problem, mass = 50kg on planet xenon.

Weight =  mass x acceleration due to gravity  = 50 x 4.9  = 245N

The weight on Xenon is 245N and the mass is 50kg

4 0
3 years ago
A freight train rolls along a track with considerable momentum. If it were to roll at the same speed but had twice as much mass,
fomenos

Answer:

The momentum would be doubled

Explanation:

The magnitude of the momentum of the freight train is given by:

p=mv

where

m is the mass of the train

v is its speed

In this problem, we have that the speed of the train is unchanged, while the mass of the train is doubled:

m'=2m

therefore, the new momentum is

p'=m'v=(2m)v=2(mv)=2p

so, the momentum has also doubled.

7 0
3 years ago
1. If 800 C of electric charge passed through a light bulb in 4 min; what is the mag
9966 [12]

The electric current passing through the bulb would be 3.3A

<u>Explanation:</u>

Given:

Electric charge, q = 800C

Time, t = 4 min

           = 4 X 60 sec

           = 240 sec

Electric current, I = ?

We know,

Current  = \frac{Charge}{Time}

On substituting the value we get:

I = \frac{800}{4 X 60} \\\\I = 3.3A

Thus, the electric current passing through the bulb would be 3.3A

5 0
3 years ago
where would information on the chemical and physical properties of a specific chemical be located in a laboratory or in the work
goldenfox [79]

Answer:

Both

Explanation:

8 0
3 years ago
What was the largest group in the colonies in the year leading up to the American revoulation
Degger [83]
Answer: The English origin was the largest

7 0
2 years ago
Read 2 more answers
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