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
Karolina [17]
3 years ago
8

What happens when energy is added to each state?

Chemistry
1 answer:
e-lub [12.9K]3 years ago
5 0

Answer:

One change of state happens when you add energy to the substance. This change of state is called melting. By adding energy to the molecules in a solid the molecules begin to move quicker and can break away from the other molecules. ... The temperature at which a substance goes from a solid to a liquid is it melting point.

You might be interested in
What is a Newton?<br> explain please
Lina20 [59]

Answer:

it is the unit of Force

Explanation:

force is equal to Newton

5 0
3 years ago
Read 2 more answers
Use Hess's Law to calculate the enthalpy change for the reaction
Marysya12 [62]

Answer:

ΔH = 125.94kJ

Explanation:

It is possible to make algebraic sum of reactions to obtain ΔH of reactions (Hess's law). In the problem:

1. 2W(s) + 3O2(g) → 2WO3(s) ΔH = -1685.4 kJ

2. 2H2(g) + O2(g) → 2H2O(g) ΔH = -477.84 kJ

-1/2 (1):

WO3(s) → W(s) + 3/2O2(g) ΔH = 842.7kJ

3/2 (2):

3H2(g) + 3/2O2(g) → 3H2O(g) ΔH = -716.76kJ

The sum of  last both reactions:

WO3(s) + 3H2(g) → W(s) + 3H2O(g)

ΔH = 842.7kJ -716.76kJ

<h3>ΔH = 125.94kJ </h3>
3 0
3 years ago
A rod measures 17.2 inches.<br> How many centimeters is<br> this?<br> [ ? ] cm
Rufina [12.5K]

This problem is providing the length in inches of a rod and it is being required to convert it to centimeters. According to the following, the answer will be 43.7 cm:

<h3>Units conversion:</h3><h3 />

In science, we use units conversion to represent measurements in different types of units depending on a specific requirement. To do so, we use conversion factors based on equivalence statements, relating the required unit with the given one.

In this case, the equivalence statement between inches and centimeters is 2.54 cm = 1 in and we can use it to get the answer as shown below:

17.2in*\frac{2.54cm}{1in} \\\\=43.7 cm

Learn more about units conversion: brainly.com/question/13016491

3 0
2 years ago
Why is photosynthesis important to the ecosystem everywhere
topjm [15]

It creates  oxygen which every living thing needs to live. i hope this helps! :)

7 0
3 years ago
When a bottle of soft drink is shaken violently, CO2 gas escapes from solution and
jeka94

Answer:

The pressure decrease with the passage of time due to again dissolution of carbon-dioxide gas in the liquid solution.

Explanation:

In soft drinks, the carbon-dioxide gas is added in the drinks with high pressure because carbon-dioxide is a gas which is insoluble in soft drink at room temperature but soluble in the drinks at high pressure so when the pressure is removed from the soft drink, the carbon-dioxide gas releases in the air with the passage of time. But in close bottle , there is no place of escape so it again dissolve in the solution.

6 0
3 years ago
Other questions:
  • In an exothermic reaction, the enthalpy change is negative. Which of the following is also true for an exothermic reaction?
    12·2 answers
  • The elements that lack the most properties of metals are called
    7·1 answer
  • Shelby measured the volume of a cylinder and determined it to be 54.5cm3. The teacher told her that she was 4.25% too high in he
    11·1 answer
  • What should we do to increase energy efficiency ?
    11·1 answer
  • Another name for light is ________.
    13·1 answer
  • An unknown compound contains only carbon, hydrogen, and oxygen (CxHyOz). Combustion of 6.50 g of this compound produced 9.53 g o
    13·1 answer
  • Which pair shares the same empirical formula?plz help!
    9·2 answers
  • Using the first volume and temperature reading on the table as V1 and T1, solve for the unknown values in the table below. Remem
    7·2 answers
  • As the randomness of a system increases, the entropy of the system:
    9·1 answer
  • Match the landform to its description.
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!