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
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.
You might be interested in
Density=2g/mL and volume=20mL what is mass
leva [86]

Answer:

40g

Explanation:

Mass = density x volume

= 2 x 20

= 40g

8 0
3 years ago
Read 2 more answers
A cylindrical tungsten filament 14.0 cmcm long with a diameter of 1.00 mmmm is to be used in a machine for which the temperature
Advocard [28]

Answer:

Resistivity ρ=1.12 x 10^-4 Ωm

Explanation:

ρ= RA/l, where R is resistance, A is cross sectional area and l is length

A=πr^2

Note Current is given R is proportion to temperature and inversely proportional to Current R=(20+273)/14*10^-2 =2000Ω

⇒ρ=R*πr^2/l all length in metre.

8 0
3 years ago
Which undergoes greater acceleration: an airplane that goes from 1000 km/h to 1005 km/h in 10 seconds or a skateboard that
Alex_Xolod [135]

Answer:

Skateboard

Explanation:

Acceleration is change in velocity over time.

a = Δv / Δt

The airplane's acceleration is:

a = (1005 km/h − 1000 km/h) / 10 s

a = 0.5 km/h/s

The skateboard's acceleration is:

a = (5 km/h − 0 km/h) / 1 s

a = 5 km/h/s

6 0
3 years ago
The planet earth consists of land formations, large masses of water, gases in the atmosphere, and living organisms.
andrew-mc [135]
A. 
The planet contains matter and energy so it is a system.
8 0
3 years ago
Explain why it is important to create measurable goals.
ANTONII [103]

Answer:

it is important to create measurable goals bc :

  • To determine the point at which the goal has been achieved.
  • It can also help improve motivation allowing an individual to track the progress towards the goal.

hope it helps!

3 0
3 years ago
Read 2 more answers
Other questions:
  • `
    12·2 answers
  • What is a structure that organizes motion of chromosomes
    13·2 answers
  • On the planet Gizmo, the inhabitants travel by high speed trains that run on air tracks much like the air track you used in lab.
    9·1 answer
  • A student whirls a rubber stopper attached to a string in a horizontal circle above her head. If the radius of the stopper in ci
    12·1 answer
  • Is weight included in free body diagram
    7·2 answers
  • Label the parts of a concave lens.
    5·2 answers
  • Two objects, X and Y, are held at rest on a horizontal frictionless surface and a spring is compressed between them. The mass of
    8·1 answer
  • An airplane accelerates down a runway at 3 m/s2 for 32 s until is finally lifts off the ground. Determine the distance traveled
    7·1 answer
  • There are three naturally occurring isotopes
    13·1 answer
  • If the loop the car is currently on has a radius of 26.0 m , find the minimum height h so that the car will not fall off the tra
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!