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
vazorg [7]
3 years ago
7

Which of the following is a chemical change?

Chemistry
1 answer:
frutty [35]3 years ago
3 0
C. rusting is the correct answer
You might be interested in
A sample of potassium has an average atomic mass of 39.0983amu. There are three isotopic forms of potassium element in the sampl
igomit [66]

Answer:

Percent Composition of 41K = 6.7302%

Explanation:

The explination is in the image.

7 0
3 years ago
Which of these is a body fossil?<br> A.shrimp burrow B.Plant Imprint C. Claw Print D.dinousaur egg
Alik [6]
Claw print could be it
3 0
3 years ago
Read 2 more answers
Where is the atmosephere the most dence
likoan [24]
The Earths Surface, it’s also known as the troposphere also dense* lol
8 0
3 years ago
Read 2 more answers
Different microscopic organisms cause different
lozanna [386]

Answer/Explanation:

A theory has lots of scientific evidence to back it up. We know this to be true based on lots of different diseases and studies of their spread.

A hypothesis is more of a starting point - an educated guess based on limited evidence. It requires further testing before becoming a theory.

A law is something that can be generalized to lots of contexts, and is universal. Such as the law of thermodynamics.

5 0
3 years ago
a beaker of benzene is at room temperature. what is its vapor pressure. Is this vapor pressure large enough to cause the benzene
Serhud [2]

Answer:

(1). The vapor pressure is 91 mmHg at 20°C.

(2). No, benzene will not boil at sea level.

Explanation:

Benzene, C6H6 is an aromatic, liquid compound with with molar mass of 78.11 g/mol and Melting point of 5.5 °C. One of the importance or the uses of benzene is in the making of fibres and plastics.

The vapour pressure of benzene can be gotten from the table showing the vapor pressure of different liquids.

Boiling point can simply be defined as the point or the temperature in which the vapor pressure is the same with the atmospheric pressure.

The atmospheric pressure is 760mmHg, while the vapor pressure at sea level is at the temperature of 15°C which is equal to 71 mmHg( from the table showing the vapor pressure of different liquids).

71 mmHg is not equal to 760 mmHg, thus, at sea level Benzene will not boil.

8 0
2 years ago
Other questions:
  • Which is more metallic<br> a) Gold<br><br> b) Bismuth
    11·1 answer
  • The thermite reaction, in which powdered aluminum reacts with iron oxide, is highly exothermic: 2Al(s) + F e2O3 (s)→A l2O 3 (s) 
    8·1 answer
  • Calculate the mass-to-mass ratio of 25.0 g of salt in 105 g of water. Work must be shown in order to earn credit.
    5·1 answer
  • State the number of electrons that must be lost by atoms of
    6·1 answer
  • What type of temperature changes produce large crystals
    14·1 answer
  • Describe why hydrogen bonds form between water molecules
    5·1 answer
  • (please help ;-; 30 points)This is a diagram developed by Ejnar Hertzprung and Henry Russell that shows how the magnitude, tempe
    13·1 answer
  • When the process of condensation occurs, the kinetic energy of particles
    15·1 answer
  • Which of these things would you expect to have cells with both mitochondria
    10·1 answer
  • Limiting reactants don’t know how to do
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!