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
Murljashka [212]
2 years ago
14

Which activity is an example of chemical change?

Chemistry
1 answer:
frutty [35]2 years ago
3 0
An old penny rusting, remember you can’t undo a chemical change
You might be interested in
What causes the Moon to revolve around Earth?
Mama L [17]

Answer:

A, Earth Gravity

Explanation:

7 0
2 years ago
Read 2 more answers
HELPP!!!!!!!!!!
muminat

1. Mg + CuSO4 —> MgSO4 + Cu

=> Single displacement reaction

2. 2HCI + Mg(OH)2 —> MgCI2 + H2O

=> Acid - base reaction

3.AgNO3 + NaCI —> AgCI + NaNO3

=> Double displacement reaction

8 0
2 years ago
The pot shown in the picture is made of two different metals. Why is the handle made of a different metal than the rest of the p
sertanlavr [38]
The rest of the bot needs to be able to heat up to cook ur food but the handles should be cooler so u can touch them
8 0
3 years ago
Read 2 more answers
Calculate the work (kJ) done during a reaction in which the internal volume expands from 20 L to 43 L against an outside pressur
Alenkinab [10]

Answer:

\large \boxed{\text{-10.0 kJ}}

Explanation:

1. Calculate the work

w = - pΔV = -4.3 atm × (43 L - 20 L) = -4.3 × 23 L·atm = -98.9 L·atm

2. Convert litre-atmospheres to joules

w = \text{-98.9 L\cdot$atm } \times \dfrac{\text{101.3 J}}{\text{1 L$\cdot$atm }} = \text{-10000 J} = \textbf{-10.0 kJ}\\\\\text{The work done is $\large \boxed{\textbf{-10.0 kJ}}$}

The negative sign indicates that the work was done against the surroundings.

4 0
3 years ago
NO LINKS!!!
Alex Ar [27]
Hey there!

Static electricity is a missing charge. When positive ions are formed (where an electron is missing), this imbalance is called static electricity.

7 0
2 years ago
Read 2 more answers
Other questions:
  • What is the value of [oh–] in a 0.820 m solution of sr(oh)2?
    11·1 answer
  • Separating a solid from a liquid by evaporating the liquid is called _____.
    8·1 answer
  • Why wasn't oxidation type chemical weathering common more than 2 billion years ago?
    15·1 answer
  • Polypeptides are synthesized from amino acid building blocks. The condensation reaction between the growing polypeptide chain an
    13·1 answer
  • 1. Heat transfer takes place when:
    8·1 answer
  • I need some information about greenhouse effect, please. Could you help me?
    5·2 answers
  • Which chemical equation below is balanced to follow the Law of Conservation of Mass?
    8·2 answers
  • Select the correct answer.
    6·1 answer
  • How many protons will there be if the atom has 3 electrons and a mass of 7 amu
    8·1 answer
  • Using the image below, describe in at least 2 paragraphs, what is happening with the arrows. Name and explain the processes and
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!