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
lana66690 [7]
3 years ago
5

Please comment if you are sure about your answer . Thank you

Chemistry
1 answer:
ryzh [129]3 years ago
3 0
2,3,7,10,13 i did this yesterday can u mark me brainliest

You might be interested in
The heat of vaporization of a liquid is 84.0 J/g. How many joules of heat would it take to completely vaporize 172 g of this liq
Aliun [14]

Answer:

14,448 J of heat would it take to completely vaporize 172 g of this liquid at its boiling point.

Explanation:

The heat Q that is necessary to provide for a mass m of a certain substance to change phase is equal to Q = m*L, where L is called the latent heat of the substance and depends on the type of phase change.

During the evaporation process, a substance goes from a liquid to a gaseous state and needs to absorb a certain amount of heat from its immediate surroundings, which results in its cooling. The heat absorbed is called the heat of vaporization.

So, it is called "heat of vaporization", the energy required to change 1 gram of substance from a liquid state to a gaseous state at the boiling point.

In this case, being:

  • Q=?
  • m= 172 g
  • L= 84 \frac{J}{g}

and replacing in the expression Q = m*L you get:

Q=172 g*84 \frac{J}{g}

Q=14,448 J

<u><em>14,448 J of heat would it take to completely vaporize 172 g of this liquid at its boiling point.</em></u>

5 0
3 years ago
Chemistry questions?
Liono4ka [1.6K]

Answer:

The first one is 425g of copper

Explanation:

6 0
3 years ago
Some help I’ll give brainliest
daser333 [38]

Answer: Meteoroid

Explanation:

Dwarf planets are smaller than moons

Comets are smaller than dwarf planets.

Meteoroids, Meteors, and Meteorites are broken off pieces of comets.

Meteoroids are smaller than Asteroids

5 0
3 years ago
Question 2*
Paraphin [41]

Answer:

Sc(OH)₃ = 96 g/mol

Explanation:

Gram formula mass:

Gram formula mass is the atomic mass of one mole of any substance.

It can be calculated by adding the mass of each atoms present in substance.

Sc(OH)₃:

Atomic mass of Sc = 45 amu

Atomic mas of O = 16 amu

There are three atoms of O = 16 ×3

Atomic mas of H = 1 amu

There are three atoms of H = 1 ×3

Gram formula mass of Sc(OH)₃:

Sc(OH)₃ = 45 ×1 + 16 ×3 + 1  ×3

Sc(OH)₃ = 96 g/mol

6 0
3 years ago
Water (H2O) is considered a mineral because it is inorganic and occurs naturally.
Natasha_Volkova [10]
B.false because water is not mineral
4 0
3 years ago
Other questions:
  • A laboratory analysis of an unknown sample yields 40.5% carbon, 4.5% hydrogen, and 55.0% oxygen. if the sample has a molar mass
    15·1 answer
  • Proteins are polymers of _____. proteins are polymers of _____. ch2o units amino acids nucleotides glycerol hydrocarbons
    10·1 answer
  • An ________ is the smallest unit of matter that cannot be broken down chemically into simpler substances.
    10·1 answer
  • Please a little help in this I will really appreciate it
    8·1 answer
  • Which law states that the pressure and absolute temperature of a fixed quantity of gas are directly proportional under constant
    7·1 answer
  • What is one way a pathogen can enter the body?
    12·2 answers
  • Water in ethanol solution which one of them is solvent?​
    5·2 answers
  • I need solutions, thank you very much
    15·1 answer
  • If the following arithmetic operations are carried out, how many significant figures should be reported in the answer?32 + 0.56
    6·1 answer
  • In which form are water molecules most closely bonded to each other?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!