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
kirill115 [55]
3 years ago
14

HELP PLS THIS IS DUE IN 15 MINUTES PLS PLS PLS!!! I WILL MARK BRAINLIEST IWTH THE BEST ANSWER!!!

Chemistry
2 answers:
jarptica [38.1K]3 years ago
7 0

Answer:

A chemical change results from a chemical reaction, while a physical change is when matter changes forms but not chemical identity. Examples of chemical changes are burning, cooking, rusting, and rotting. Examples of physical changes are boiling, melting, freezing, and shredding.

Explanation:

mixer [17]3 years ago
3 0

Answer:

A chemical change results from a chemical reaction, while a physical change is when matter changes forms but not chemical identity.

physical changes are boiling, melting, freezing, and shredding.

Explanation:

You might be interested in
of the following warnings, which one refers to a chemical property of a substance? fragile flammable handle with care shake well
coldgirl [10]
Flammable is ur answer
6 0
3 years ago
Why is the collision theory considered to be well-established and highly reliable?
hodyreva [135]

BECAUSE IT NEVER BREAKES


5 0
3 years ago
It is composed of an alloy that is 90% Platinum and 10% Iridium; having a density of 21.186 g/cm3. What is the volume of the Sta
oksian1 [2.3K]
The alloy has a density of 21.186g/cc. So for a kilogram or 1000 grams/21.186 g/cc= 45.7 cc. So the answer is 45.7 cc of the allow to make up a kilogram which shows that the density of the allow can be used to calculate the volume of a larger mass ie the kilogram. 
7 0
3 years ago
What is ultrafication?
Studentka2010 [4]
<span>Ultrafiltration is a process which prevents the dilution of the bloos. During this process some of water with some dissolved materials is forced </span>through the membrane by maintaining the blood at a higher pressure than the solution.
6 0
3 years ago
Given the equation: 2H2 + O2 → 2H2O, how many moles of oxygen are needed to react with 13 moles of hydrogen
bulgar [2K]

Explanation:

2H2 + O2 = 2H2O

2mol. 1mol. 2mol

2mol reacts with 1mol

13mol reacts with x

x=<u>13mol</u><u> </u><u>×</u><u> </u><u>1mol</u>

<u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u>2mol</u>

x= <u>13mol</u>

<u> </u><u> </u><u> </u><u> </u><u> </u><u> </u>2mol

x= 6.5mol of oxygen

6 0
2 years ago
Other questions:
  • The diagram shows a balloon that was rubbed with a piece of cloth what is the change
    8·1 answer
  • Explain the composition of dna nucleotides and the structure of the dna molecule need help
    11·1 answer
  • Glucose molecules bond together in a process known as dehydration synthesis. What happens in this process?. . Water is used as a
    6·2 answers
  • List the number of each type of atom on the right side of the equation hbr(aq)+2naoh(aq)→2nabr(s)+h2o(l)
    12·2 answers
  • Elemental mercury combines with oxygen to make mercury oxide. write a balanced equation
    7·1 answer
  • Observe: The Hollow pipe allows the water in each flask to move around and mix. Try several experiments with different temperatu
    10·1 answer
  • Draw a lewis structure for XZ2 (X has 6 valence electrons, F has 7 valence electrons)
    9·1 answer
  • Scientists think the moon was formed when
    9·1 answer
  • $5,000 multiplyed by $150 multiplyed by $2500 multiplyed by 3%​
    11·2 answers
  • Which two wire properties would provide the greatest resistance to the flow of a current? short, thin long, thin hot, thick cool
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!