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
Sergeeva-Olga [200]
3 years ago
10

True or false when matter changes it’s state it is a physical change because it is the same substance the whole time.

Chemistry
1 answer:
Blababa [14]3 years ago
5 0

Answer:

true

Explanation:

You might be interested in
Complete the word equation for making a salt.
dalvyx [7]

Answer:

acid +alkaline =salt and water

Explanation:

if an acid reacts with an alkaline they form salt and water

4 0
3 years ago
Read 2 more answers
The van der waals equation is a modified version of the
vodomira [7]

Answer:

Hullbreine

Explanation:

answer from quiz

6 0
2 years ago
At a certain temperature the vapor pressure of pure chloroform (CHCl3) is measured to be 91. torr. Suppose a solution is prepare
OleMash [197]

Answer:

P_{CCl_4}=52.43torr

Explanation:

Hello there!

In this case, sine the solution of this problem require the application of the Raoult's law, assuming heptane is a nonvolatile solute, so we can write:

P_{CCl_4}=x_{CCl_4}P_{CCl_4}^{vap}

Thus, we first calculate the mole fraction of chloroform, by using the given masses and molar masses as shown below:

x_{CCl_4}=\frac{140/153.81}{140/153.81+67.1/100.21}=0.576

Therefore, the partial pressure of chloroform turns out to be:

P_{CCl_4}=0.576*91torr\\\\P_{CCl_4}=52.43torr

Regards!

3 0
3 years ago
Matter is made up of heat energy and ___________energy?
ella [17]
You’re correct, matter is made up of heat energy and chemical energy

all matter contains heat because it is the result of the movement of atoms, molecules, or ions in solids, liquids, and gases.

all matter also contains chemical energy. chemical energy is stored in the bonds of chemical compounds so atoms and molecules are held together by chemical energy

hope this helps :)
3 0
2 years ago
During region C of the graph above the energy being absorbed is a. increasing the velocity of the water particles. b. increasing
Mkey [24]

Answer:

Your answer would be B. Increasing the distance between the water molecules and increasing their phase energy.

Explanation:

Hope this helps you answer this question!

7 0
2 years ago
Other questions:
  • If 20 grams of N2 react completely with H2 , how many moles of NH3 are produced? Show Work
    13·1 answer
  • How does calcium obey the octet rule when reacting to form compounds?
    6·2 answers
  • How many grams of h2 will be produced if 175g of HCI are allowed to react completely with sodium
    9·2 answers
  • Explain the relationship between isotopes,<br> neutrons, atomic mass, and protons.
    7·2 answers
  • A student has a solid block of steel and a solid plastic block of the same size.
    6·1 answer
  • Short structures that cover the outside of some protists and help them move are called what?
    5·1 answer
  • What is bank?Effect of drug abuse.<br>​
    14·1 answer
  • Imagine that a new planet was discovered in our solar system. Answer the following questions based on the patterns discovered by
    11·1 answer
  • hen CO(g) reacts with O2(g) to form CO2(g) , 283 kJ of energy are evolved for each mole of CO(g) that reacts. Write a balanced t
    12·1 answer
  • How is a wound healing a chemical change? please explain ​
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!