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
tiny-mole [99]
3 years ago
5

What type of machine is a CD player?

Chemistry
2 answers:
Liula [17]3 years ago
4 0
It is a compound machine i think, tell me if its right!

xenn [34]3 years ago
3 0

Answer:

C. compound machine.

Explanation:

i just took the test and got it correct!

Please say thanks by liking it, so i know i helped you :)

You might be interested in
If I initially have a gas at a pressure of 12 kPa, a volume of 23 liters, and a temperature of 200 K, and then I raise the press
sertanlavr [38]

Answer:

The new volume of gas would be 30 L.

Explanation:

This is an example of a Combined Gas Laws problem.

5 0
3 years ago
What is the first stroke of a 4 stroke cycle?
lisabon 2012 [21]

Answer:

A

Explanation:

its a because that is the first thing you do

8 0
3 years ago
Read 2 more answers
Complete the acid–base equation for the dissolution of the following compound into liquid HF solvent. The relevant pKa values ar
LenKa [72]

Answer:

The balanced chemical equation: NH₃ + 2 HF → NH₄⁺ + HF₂⁻

Explanation:

According to the Brønsted–Lowry acid–base theory, the acid- base reaction is a type of chemical reaction between the acid and base to give a conjugate acid and a conjugate base.

In this reaction, a Brønsted–Lowry acid loses a proton to form a conjugate base. Whereas, a Brønsted–Lowry base accepts a proton to form a conjugate acid.

Acid + Base ⇌ Conjugate Base + Conjugate Acid

The acid dissociation constant (Kₐ) <em>signifies the acidic strength of a chemical species.</em>

∵ pKₐ = - log Kₐ

Thus for a strong acid, Kₐ value is large and pKₐ value is small.

pKₐ (HF) = 3.2 → strong acid

pKₐ (NH₃) = 38 → weak acid

<u>The chemical reaction involved in the dissolution process:</u>

NH₃ + 2 HF → NH₄⁺ + HF₂⁻

In this acid-base reaction, the acid HF reacts with NH₃ base to give the conjugate base HF₂⁻ and conjugate acid NH₄⁺.

<u>HF (acid) donates a proton to form the conjugate base, HF₂⁻ ion. NH₃ (base) accepts a proton to form the conjugate acid. </u>

7 0
3 years ago
Activity In this activity, you’ll draw and count atoms to understand how nitrogen and hydrogen react to make ammonia. Begin by s
vredina [299]

Answer:

Explanation:

3 0
2 years ago
Please help with this lab !
vekshin1
To get out the iron filings put everything in to a container and then put the magnet to the side to attract them. Pull them out of the container. Then, I don’t know how to separate the sand and salt. Maybe evaporate the salt? I joke you can figure it out. Best of luck! :)
4 0
3 years ago
Other questions:
  • Consider the following equilibrium:
    8·2 answers
  • Drag each tile to the correct location on the image.
    15·2 answers
  • What is an aqueous solution compound
    8·1 answer
  • Cuántos gramos de cloruro de magnesio se pueden obtener si se hacen reaccionar 354,9g de cloruro de titanio (IV) y 285g de magne
    5·1 answer
  • Why ions move and in which direction they move in the presence of an electric field created between two electrodes having opposi
    7·1 answer
  • Natural vs. Synthetic
    5·2 answers
  • HELP I DON'T HAVE LONG LEFT AND I'M STRUGGLING SO BAD PLEASE I BEG U TO HELP
    8·1 answer
  • Where did they start water conservation in tamil nadu . short answer
    9·1 answer
  • Explain the properties of acids
    5·1 answer
  • Oxygen is not a large part of the air used by organisms in respiration therefore it is not an important element.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!