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
attashe74 [19]
2 years ago
15

Science edpuzzle All of the following describe a chemical change, EXCEPT…

Chemistry
1 answer:
Dmitry_Shevchenko [17]2 years ago
7 0

Answer:

B

Explanation:

You might want to pick "A sound is created" No that answer is just fine. If you listen when sitting around a campfire, you might hear the crackling of what is burning. Burning is an excellent example of a chemical change. Wood becomes ash.

The answer is a change in the state of matter. (B). That need not indicate a chemical change. In fact, most of the time, a change in matter is a physical change.

Answer: B

You might be interested in
The chemical equation below summarizes cellular respiration. 6O2 + C6H12O6 à 6CO2 + 6H2O + energy The energy that is released by
Kay [80]
Chemical energy is released from the breaking down of glucose.
4 0
3 years ago
Read 2 more answers
the volume of a gas is 250mL at 340.0kPa pressure. what will the volume be when the pressure is reduced to 50.0kPa assuming the
ki77a [65]

Clearly volume will INCREASE almost sevenfold, as we would expect if we reduce the pressure. ... Assuming this is an ideal gas, and that the number of molecules *n* of this gas remains constant, and given that the temperature is also ... That is, in these conditions, pressure times volume is constant :


6 0
3 years ago
¿la densidad de una solución es mayor o menor al agregar agua?
andreev551 [17]

Answer:

La densidad experimenta una disminución

Explanation:

Hola!

En este caso, debemos recordar que la adición de agua incrementa el volumen donde se encuentra un soluto disuelto, el cual posee una cantidad de materia constante. De este modo, sabiendo que la densidad es:

\rho =\frac{m}{V}

Al incrementar el denominador (volumen), la densidad experimenta una disminución, al estar en relación inversamente proporcional.

Muchos saludos!

5 0
3 years ago
What is the mass of ca(oh)2 in 110. mL of 1.244 M ca(oh)2 solution
stealth61 [152]
<em>V= 110mL = 110cm³ = 0,11dm³</em>
<em>C = 1,244 mol/L = 1,244 mol/dm³</em>


C = n/V
n = 1,244×0,11
<u>n = 0,13684 moles</u>

<em>mCa(OH)₂ = 74 g/mol</em>


1 mole Ca(OH)₂ ------------ 74g
0,13684 ---------------------- X
X = 74×0,13684
<u>X = 10,12616g</u>

:)
7 0
3 years ago
Bio-chemisty of protain​
sergejj [24]

Answer:

Protein biochemistry is the study of proteins. Protein biochemistry is a scientific field dedicated to the study of proteins, complex chains of amino acids which make up the building blocks of all living organisms.

Explanation:

I hope that helped

Copy and Pasted!

7 0
3 years ago
Other questions:
  • Balance the chemical equation by indicating the number of each species in the appropriate blanks. For this exercise, indicate co
    12·1 answer
  • The polyatomic ion with the formula CN- is called
    13·2 answers
  • Identify the base in this acid-base reaction:
    15·1 answer
  • Which term refers to the speed at which sound waves? <br>A) Volume<br>B) Amplitude<br>C) Frequency​
    15·1 answer
  • When glaciers are growing larger, the concentration of the heavier oxygen isotope in sea water increases?
    13·2 answers
  • Which of the following are major influences on weather and climate?
    8·1 answer
  • Osmosis is a type of diffusion
    11·2 answers
  • This isn’t really a school related question. but can you workout with a belly piercing?
    8·2 answers
  • Help me out ? I'm not sure of my answer.<br>​
    13·1 answer
  • At room temperature (208C) and pressure, the density of air is 1.189 g/L. An object will float in air if its density is less tha
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!