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
dezoksy [38]
2 years ago
15

Which one is a chemical reaction? Why?

Chemistry
1 answer:
Alex17521 [72]2 years ago
3 0

Answer:

Copper turns green on exposure to air

Explanation:

Liquid water freezes to form ice: Physical change

Reason: Water can melt back when it becomes ice.

Copper turns green on exposure to air: Chemical change

Reason: The copper can not change back from the green state when it turns green.

You might be interested in
Which diagram represents an electrolytic solution
PtichkaEL [24]

Answer:

Image

Explanation:

An electrolytic solution is a solution that has the ability of conducting electricity. Electrolytic solutions contain ions in which it conducts electricity from those ions. Ions are charged atoms. This solution (refer to image) has ions, as represented by the + and - symbols.

4 0
1 year ago
How many moles of Ag will be produced from 16.0 g of Cu, assuming AgNO3 is available in excess
madreJ [45]

Answer:0.504

Explanation:

4 0
3 years ago
Question 2
sasho [114]
I’m pretty sure the answer would be

24.6078
Hopefully that helps
5 0
3 years ago
What is the name of the following compound? A line-angle formula shows a ring with six vertices and a circle inscribed. A Cl ato
ozzi

Answer: Option C. p-dichlorobenzene and 1,4-dichlorobenzene.

Explanation:

A line-angle formula with six vertices and a circle inscribed corresponds to the compound known as benzene.

Further, according to the IUPAC standards for naming benzene derivatives, you must first number the position of the substituent. In this case, the substituents (chloros) are located at the positions 1 and 4; also, for the benzene derivatives when they have 2 substituents and the positions are 1 and 4, this configuration is known as <em>para </em>or <em>p </em>configuration.

Additionally, this compound has 2 substituents (chloros) so you have to indicate this number (di).

Therefore, the correct answer is C. p-dichlorobenzene and 1,4-dichlorobenzene.

4 0
3 years ago
Which choice correctly places the discovery of subatomic particles in order from earliest to latest?
xeze [42]
Wait hold up do you live in Wilson county????
7 0
2 years ago
Other questions:
  • Super easy help me out
    11·1 answer
  • Osmium is one of the densest elements known, what is its density if 2.72 g has a volume of 0.121 cm3?
    15·2 answers
  • For the reaction of gaseous nitrogen with gaseous hydrogen to produce gaseous ammonia, the correct equilibrium constant expressi
    9·1 answer
  • What is the molar mass of magnesium nitride (Mg3N2) if the molar mass of magnesium is 24.31g and nitrogen is 14.01g?
    14·1 answer
  • How many electrons in an atom can share the quantum numbers n=2, l=1 and ml=1?
    7·2 answers
  • HELP! THIS IS SCIENCE
    12·2 answers
  • if you have 10.0 grams of baking soda with enough citric acid, how many miles of carbon dioxide can you produce
    7·1 answer
  • What are the two ways we can get the mass of an object?
    6·1 answer
  • Bob the chemist ran a TLC plate of his product, but the spot would not move off the baseline. The eluent he used consisted of a
    15·1 answer
  • Why is water important to cells
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!