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
Ray Of Light [21]
3 years ago
10

What would indicate that a physical change takes place when copper is drawn into wire? Copper is heated, changing its molecular

structure. Copper is reshaped, but its molecular structure does not change. A new substance is formed that helps in drawing copper wire. Copper changes its color when drawn into wire.
Chemistry
2 answers:
egoroff_w [7]3 years ago
7 0
Copper is reshaped, but it's molecular structure does not change. So B.
motikmotik3 years ago
4 0
Copper is reshaped, but its molecular structure does not change.
You might be interested in
The mole concept will most likely be used in
Ronch [10]

Answer:

Determining how many ozone molecules are lost in the atmosphere.

Explanation:

3 0
3 years ago
One part nitrogen gas combines with one part oxygen gas to form how many part(s) dinitrogen monoxide (nitric oxide)?
____ [38]

Answer : The one part nitrogen gas combines with one part oxygen gas to form one part of dinitrogen monoxide.

Explanation :

Balanced chemical reaction : It is defined as the reaction in which the number of atoms of individual elements present on reactant side must be equal to the product side.

When nitrogen gas combines with oxygen gas then it react to give dinitrogen monoxide or nitrous oxide.

The balance chemical reaction will be:

2N_2(g)+O_2(g)\rightarrow 2N_2O(g)

By the stoichiometry we can say that, 2 parts of nitrogen gas combines with 1 part of oxygen gas to give 2 parts of dinitrogen monoxide or nitrous oxide.

First we have to determine the limiting reagent.

From the reaction we conclude that,

As, 2 moles of nitrogen gas combine with 1 mole of oxygen gas

So, 1 moles of nitrogen gas combine with 0.5 mole of oxygen gas

It means that, oxygen gas is an excess reagent because the given moles are greater than the required moles and nitrogen gas is a limiting reagent and it limits the formation of product.

Now we have to determine the moles of dinitrogen monoxide.

As, 2 moles of nitrogen gas combine to give 2 mole of dinitrogen monoxide

So, 1 mole of nitrogen gas combine to give 1 mole of dinitrogen monoxide

Thus, the one part nitrogen gas combines with one part oxygen gas to form one part of dinitrogen monoxide.

7 0
3 years ago
He total power used by humans worldwide is approximately 15 TW (terawatts). Sunlight striking Earth provides 1.336 kW per square
SCORPION-xisa [38]

Answer:

id

Explanation:

idk

3 0
3 years ago
Question 33 Saved
Tatiana [17]

Answer:

The third option

Explanation:

If people have found more volcanic rock layers in the past that would mean that volcanic activity was more common in the past.

3 0
3 years ago
What is the mole to mole ratio of LiOH to HBr for the following reaction?
umka21 [38]

Explanation:

so moles = mass ÷ mr (1+ 79.9)

so 10.00g ÷ 80.9

which is 0.1236093943

so to 3 S.F is 0.124 moles

also there is 1 to 1 ratio for LiOH to HBr

hope this helps :)

8 0
3 years ago
Other questions:
  • What is the correct notation for a calcium ion whose outershell is a full octet?
    11·1 answer
  • How many mols is 1433.6 iron atoms
    12·1 answer
  • The greenhouse effect traps the sun's energy on Earth similar to
    7·2 answers
  • The substances that undergo change in a chemical reaction are called?
    9·1 answer
  • What metric measurement is similar to a mile?
    10·2 answers
  • Which Step In the nitrogen cycle is accelerated at the beginning of the eutrophication process
    13·1 answer
  • The neutralization of H3PO4 with KOH is exothermic. 55.0 mL of 0.213 M H3PO4 is mixed with 55.0 mL of 0.640 M KOH initially at 2
    12·1 answer
  • Fill the blanks in 17-23 please help!
    5·1 answer
  • Question 3 (10 points)<br> How many valence electrons are in a neutral atom of Neon-212
    7·1 answer
  • Solve the following problem and select the correct answer: (4.5 x103)(3.5 x102)
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!