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
Tell uses of nitrogen ​
Aleksandr [31]

Answer:

Hello

  • Preservation of Food. Nitrogen gas is used to help with food preservation by preventing oxidative damage leading to food spoiling.
  • Pharmaceuticals Industry.
  • Electronics Manufacturing.
  • Stainless Steel Manufacturing.

Explanation:

thanks

6 0
3 years ago
Mass = 35g Volume = 7cm³ What is the Density?​
gizmo_the_mogwai [7]

Answer:

The answer is

<h2>5.0 g/cm³</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume}  \\

From the question

mass = 35 g

volume = 7 cm³

The density is

density =  \frac{35}{7}  \\

We have the final answer as

<h3>5.0 g/cm³</h3>

Hope this helps you

7 0
3 years ago
g aqueous barium hydroxide (ba(oh)2) and nitric acid (hno3) participate in a complete neutralization reaction. in the molecular
Whitepunk [10]

Answer:

Where the products are H2O and Ba(NO3)2

Explanation:

A base, as, barium hydroxide (Ba(OH)2) reacts with an acid (HNO3), producing water (H2O), and the related salt (Ba(NO3)2) in a reaction called <em>neutralization reaction.</em>

The balanced reaction is:

Ba(OH)2 + 2 HNO3 → 2 H2O + Ba(NO3)2

<em>Where the products are H2O and Ba(NO3)2</em>

4 0
3 years ago
How many moles of a gas sample are in a 10.0 L container at 373 K and 203 kPa? the gas constant is 8.31 L -kPa/ mol-K.
Zepler [3.9K]
I believe the answer is 0.33
5 0
2 years ago
Read 2 more answers
Which alkane would have a higher boiling point?a)ethaneb)pentanec)heptane
Whitepunk [10]

Answer:

The correct answer is option c.

Explanation:

Alkanes with higher molecular mass has higher boiling point.

Thisis because when the molar mass of the alkanes increases the the surface area  increases with which van der Waals forces between the molecules of alkane also increase which increases the association of the molecules of with each other which results in increase in boiling point is observed.

The increasing order of the molar mass of the given alkanes;

C_2H_6

So out of ethane, pentane and heptane . Heptane has highest molecular mass with higher boiling point value. Where as ethane have the lowest value of boiling point.

6 0
3 years ago
Other questions:
  • Chemical Formula for Coffee?
    11·1 answer
  • Why is the melting of ice a physical change? It changes the chemical composition of water. It does not change the chemical compo
    9·2 answers
  • 24 What is the atomic number of the element whose atoms bond to each other in chains, rings, and networks?(1) 10 (3) 6
    11·2 answers
  • Can you help me on my science
    9·1 answer
  • Give reason:
    8·1 answer
  • Why don’t scientists use the Bohr model above to explain charge transfer?
    15·1 answer
  • Which of the following is the most plausible explanation for the fact that the saponification of the triacylglycerol in the pass
    6·1 answer
  • Determine el porcentaje masa volumen de una solucion compuesta de 150g de etanol y 20g de agua cuyo volumen total es de 165ml
    6·1 answer
  • Now look at the segment of the graph between the two data points marked with red squares. Describe how the boiling point and mel
    10·2 answers
  • The reaction of a quantity of sulfur trioxide with water gives an acid with a volume of 2 l, containing 1.8 mol of the dissolved
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!