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
pashok25 [27]
3 years ago
13

Which of the following is the best definition of a physical change?

Chemistry
2 answers:
Eddi Din [679]3 years ago
8 0
You’re best choice is B
ELEN [110]3 years ago
7 0
I think answer is

C. Something that can be observed or measured while changing the identity of the substance
You might be interested in
Water is produced from the reaction of hydrogen and oxygen gas, according to the equation below. What is the excess reactant in
liq [111]

Explanation:

Mole ratio of Oxygen to Hydrogen gas = 1 : 2.

If we use 3.0 moles of oxygen gas, we would need 3.0 * 2 = 6.0 mol of hydrogen gas.

However we only have 4.2 mol of hydrogen. Therefore hydrogen is limiting and oxygen is in excess. (B)

3 0
3 years ago
A 15.0 L tank of gas is contained at a high pressure of 8.20 x 10^4 torr. The tank is opened and the gas expands into an empty c
Inga [223]

Answer:

20.5torr

Explanation:

Given parameters:

V₁  = 15L

P₁  = 8.2 x 10⁴torr

V₂ = 6 x 10⁴L

Unknown:

P₂  = ?

Solution:

To solve this problem we have to apply the claims of Boyle's law.

Boyle's law is given mathematically as;

            P₁ V₁   = P₂V₂

where P₁ is the initial pressure

          V₁ is the initial volume

           P₂ is final pressure

           V₂ is final volume

   8.2 x 10⁴  x 15  = P₂  x 6 x 10⁴

         P₂  = 20.5torr

5 0
3 years ago
Magnesium (Mg): 1s22s22p63s2<br><br> longhand notation<br><br> noble-gas notation
blsea [12.9K]

Answer: longhand notation

Explanation: I just did it on Edg

6 0
3 years ago
Read 2 more answers
If you are asked to compare matter in solid, liquid, and gaseous states, which statement best defines a gas?
Elza [17]
I am pretty sure that <span>If I were asked to compare matter in solid, liquid, and gaseous states, the statement which would best defined a gas is </span>highest energy, highest molecular motion, and least dense packaging of molecules. I choose this one because it's not sensible to <span>heat CO2 (in case of safety) and in the last option the amount of energy is not satisfying.

Hope it helps!</span>
8 0
3 years ago
Read 2 more answers
What is the angle between the carbon-sulfur bond and the carbon-nitrogen bond in the thiocyanate ( SCN− ) ion?
KIM [24]
I’m not completely sure
4 0
4 years ago
Read 2 more answers
Other questions:
  • answer the following question by entering the numeric value with appropriate units. if the length of one side of a square is 12.
    9·1 answer
  • An atom has a mass number of 25 and 13 neutrons. what is the atomic number of this atom? express your answer as an integer.
    8·1 answer
  • Tyrone wants to buy peanut butter that does not contain any hydrogenated oils. What should Tyrone be concerned about?
    6·2 answers
  • Select the supplements that are minerals.
    6·1 answer
  • What is the democritus findings?
    12·1 answer
  • sodium tends to lose a single electron in natural settings based on what you know what are two other elements that tend to do th
    9·2 answers
  • A hangar is a _____.
    12·2 answers
  • The continuous release of nuclear energy caused when on fission reaction triggers more nuclear reactions is a _
    8·1 answer
  • Convert 52.09 km/h into m/s.
    14·2 answers
  • Water is formed when two hydrogens bond to a oxygen atom
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!