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
xxTIMURxx [149]
3 years ago
9

3.

Chemistry
1 answer:
Katena32 [7]3 years ago
6 0

Answer:

it's A endothermic its when two objects rub each other to form heat this is also known as friction force

You might be interested in
Please anwser this question will me thanked
Nataly_w [17]
The answer should be "by convection" not by radiation. 
7 0
3 years ago
Read 2 more answers
Science chemistry Question:<br>​
shutvik [7]

Are you doing a quiz?

6 0
2 years ago
What are molecules, and how are the properties of molecules different from the atoms they come from? Give an example.
goldenfox [79]

Molecule, a group of two or more atoms that form the smallest identifiable unit into which a pure substance can be divided and still retain the composition and chemical properties of that substance.

While Atoms are single neutral particles,

Molecules are neutral particles made of two or more atoms bonded together.

Exaplmes for molecules

H2O (water)

N2 (nitrogen)

O3 (ozone)

CaO (calcium oxide)

C6H12O6 (glucose, a type of sugar)

NaCl (table salt

And examples for atoms

Neon (Ne)

Hydrogen (H)

Argon (Ar)

Iron (Fe)

Calcium (Ca)

Deuterium, an isotope of hydrogen that has one proton and one neutron.

Plutonium (Pu)

F-, a fluorine anion.

3 0
3 years ago
Mg + 2HCl ⟶ MgCl2 + H2
Ivanshal [37]

Answer: m = 24.31 g/mol · 1.13 mol

Explanation: 2 mol HCl use 1 mol Mg.

Magnesium is used 0.5 · 2.26 mol = 1.13 mol

M(Mg) = 24.31 g/ mol

7 0
3 years ago
Which would best help will give brainlist first 1
son4ous [18]
It would definitely be hand lense
3 0
3 years ago
Read 2 more answers
Other questions:
  • The density of gold is 19.3 g/cm3. what volume would 131.2 g of gold have?
    8·1 answer
  • Which does not affect the gravitational potential energy of an object? 1.mass 2.height 3.speed 4.acceleration due to gravity
    5·1 answer
  • Hydrogen chloride gas is shipped in a container under 5,100 mmHg of pressure that occupies 20.1 liters at 29°C. How many liters
    6·1 answer
  • Which of the following elements is a representative element?
    10·1 answer
  • What is the molarity of 4 mol of naoh dissolved in 2 l of water?
    15·2 answers
  • What volume of 2.0 M sodium phosphate must be used to make 4.0 L of 0.80 M sodium phosphate?
    13·1 answer
  • The digestive system is a group of organs working together to...
    9·1 answer
  • A compound is 40.0 % C, 53.3 % 0, and 6.66 % H What is its molecular formula if its molecular mass is 60 g? Show all your work
    13·1 answer
  • Help asap please. Will mark as the brainliest... NO LINKS!!!
    10·1 answer
  • How long does it take for magnesium citrate to work?.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!