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
Gre4nikov [31]
4 years ago
15

List 2 physical properties that can be used to differentiate between a Cu ( before 1982) penny and a Zn (after 1982) penny.

Chemistry
1 answer:
kipiarov [429]4 years ago
3 0

Answer -green

- and visibly more brittle

Explanation: Your penny would turn green from oxidation, and the more oxidation there is the more brittle and rubbed off the imprint will be.

You might be interested in
Write the net ionic equation for the reaction of aqueous copper(II) chloride with aqueous sodium phosphate. Remember to include
sergeinik [125]

Answer:

3 Cu²⁺(aq) + 2 PO₄³⁻(aq) ⇒ Cu₃(PO₄)₂(s)

Explanation:

Let's consider the molecular equation between aqueous copper(II) chloride and aqueous sodium phosphate.

3 CuCl₂(aq) + 2 Na₃PO₄(aq) ⇒ 6 NaCl(aq) + Cu₃(PO₄)₂(s)

The complete ionic equation includes all the ions and insoluble species.

3 Cu²⁺(aq) + 6 Cl⁻(aq) + 6 Na⁺(aq) + 2 PO₄³⁻(aq) ⇒ 6 Na⁺(aq) + 6 Cl⁻(aq) + Cu₃(PO₄)₂(s)

The net ionic equation includes only the ions that participate in the reaction (not spectator ions) and insoluble species.

3 Cu²⁺(aq) + 2 PO₄³⁻(aq) ⇒ Cu₃(PO₄)₂(s)

7 0
3 years ago
Suggest me some good korean or Thai or English movie
natali 33 [55]

Answer:

try to see THE PIXELS, AVENGERS, JOKER, CHARLIE'S ANGEL, JUSTICE LEAGUE,IT ,THE NUN ETC

8 0
3 years ago
Read 2 more answers
How much oxygen is typically required to complete a combustion reaction
DIA [1.3K]

Answer:

Mass of oxygen required = 19.5 moles × 16 g/mol = 312 g.

Explanation:

8 0
2 years ago
How many electrons in the same atom can share the quantum number n = 2?
melisa1 [442]
With the principle quantum number being 2, the maximum number that can share this is 8. You can use the general formula 2n^2 to calculate this number (n=quantum level), or you can use the concept of quantum numbers (n, l, m, s) to justify this answer.
3 0
3 years ago
How is carbon dioxide collected in laboratory​
olga2289 [7]

Answer:

Carbon dioxide is produced whenever an acid reacts with a carbonate. This makes carbon dioxide easy to make in the laboratory.

5 0
3 years ago
Other questions:
  • Identify the product of radioactive decay and classify the given nuclear reactions accordingly.
    6·2 answers
  • Calculation of Hydrogen Ion Concentration from pH What is the H1 concentration of a solution with pH of (a) 3.82; (b) 6.52; (c)
    6·1 answer
  • A mixture containing only FeCl3 and AlClz weighs 5.95 g . The chlorides are converted to the hydrous oxides and ignited to Fe2O3
    6·1 answer
  • Examine the unbalanced equation.
    5·2 answers
  • Will apatite scratch glass y or y not
    10·1 answer
  • Calculate the number of oxygen atoms in 29.34 g of sodium sulfate, na2so4 .
    8·2 answers
  • Please help asap! Brainliest to correct answer.
    10·1 answer
  • Can somebody please help me please?
    13·1 answer
  • Identify the physical properties of aluminum from the paragraph below.
    12·1 answer
  • What is the chemical formula for 8.6 mol of sulfur and 3.42 mol of phosphorus
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!