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
ozzi
3 years ago
10

An iron nail (Fe) is placed into a solution of copper(II) sulfate (CuSO4). After some time, the blue color of the copper (II) su

lfate disappears and some copper-colored solid (Cu) is found on the surface of the nail. The solution now contains iron (II) sulfate (FeSO4), and the container feels warmer than before the reaction.. 1. Does this reaction absorb or release absorb or release energy? How do you know?. 2. What do the color changes indicate?
Chemistry
2 answers:
Sphinxa [80]3 years ago
8 0
The reaction is a displacement reaction. Iron is more reactive than copper. Hence, it displaces copper,forming iron II sulfate and copper metal. 
This reaction is an exothermic reaction, hence it releases energy. The colour change indicates that iron has displaced copper. 
Virty [35]3 years ago
7 0
This reaction shows that iron is more reactive than copper as it displaces copper from its solution and iron passes into solution as Fe2+ ions and ferrous sulfate solution is formed. It is called a single displacement reaction. There is a release of energy since the container feels warmer. This type of reaction is called exothermic. The color changes indicate that there is a chemical reaction that occurred. The copper from the solution will now be deposited on the nail.
You might be interested in
The heat released by one mole of sugar from a bomb calorimeter experiment is 5648 kJ/mol. The balanced chemical reaction equatio
Bogdan [553]

Answer:

The answer to your question is the letter C) 5648 kJ/mol

Explanation:

Data

                C₁₂H₂₂O₁₁  +  12 O₂  ⇒   12 CO₂  +  11 H₂O

H° C₁₂H₂₂O₁₁ = -2221.8 kJ/mol

H° O₂ = 0 kJ / mol

H° CO₂ = -393.5 kJ/mol

H° H₂O = -285.8 kJ/mol

Formula

ΔH° = ∑H° products - ∑H° reactants

Substitution

ΔH° = 12(-393.5) + 11(-285.8) - (-2221.8) - (0)

ΔH° = -4722 - 3143.8 + 2221.8

Result

ΔH° = -5644 kJ/mol

6 0
3 years ago
Summarize our current
WARRIOR [948]

Answer:

Atoms have protons and neutrons in the center, making the nucleus, while the electrons orbit the nucleus. The modern atomic theory states that atoms of one element are the same, while atoms of different elements are different.Atoms consist of three basic particles: protons, electrons, and neutrons. The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged).

8 0
2 years ago
Calculate the amount of formula units in 2.10 moles of MgCl₂
Eva8 [605]
MgqI% = the formula and mass for H20 and that should be your answer for water
5 0
3 years ago
Which type of energy is associated with the random motion of the particles in a sample of gas?
aliya0001 [1]

Answer:

kinetic energy

Explanation:

Thermal Energy, Temperature, and Heat. Thermal energy is kinetic energy associated with the random motion of atoms and molecules.

8 0
3 years ago
Read 2 more answers
Can someone help me thank you. I have to look at each picture and determine if the circuits shown are series circuits or paralle
rodikova [14]

Answer:

I believe it may be-

1. Series

2. Parallel

3. Parallel

4. Series

Explanation:

In a series circuit, electricity only has one path to follow while a parallel circuit has more than one path to follow.

7 0
3 years ago
Other questions:
  • A mixture of reactants and products for the reaction shown below is at
    9·1 answer
  • 18. An electric motor turns a belt that powers a pump. If this system is compared to the chemical reactions of the cell, which p
    15·1 answer
  • Select the correct answer.
    10·2 answers
  • At a certain temperature, the K p for the decomposition of H₂S is 0.821 .
    5·1 answer
  • I am stuck... Chemistry is the worst and anything is appreciated!
    13·2 answers
  • Why are atoms of lithium, sodium, and potassium almost neverfound alone in nature
    12·2 answers
  • A substance undergoes a change.<br> Which statement indicates that the change was a chemical change?
    15·1 answer
  • 9. Calculate the frequency of light with a wavelength = 12 km. (kilo = 10')
    11·1 answer
  • The compound consists of 40% carbon and 6.71% hydrogen. Its mass of 1 liter of steam is 2.4 g. What is the formula of the compou
    11·1 answer
  • ANSWER ASAP GIVING BRAINIEST FIVE STARS AND HEART!
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!