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
enyata [817]
3 years ago
11

Question 2 (1 point) Saved

Chemistry
2 answers:
san4es73 [151]3 years ago
6 0

Answer:

False

Explanation:

An atom itself is made up of three tiny kinds of particles called subatomic particles: protons, neutrons, and electrons. The protons and the neutrons make up the center of the atom called the nucleus and the electrons fly around above the nucleus in a small cloud.

Diano4ka-milaya [45]3 years ago
5 0

Answer:

False, the electrons are on the outside protons and neutrons are in the center

Explanation:

You might be interested in
In what direction does heat flow on its spontaneously?
Anna71 [15]
Heat flows from hot to cold on its own spontaneity. Temperature is used to measure how hot or cold an object is in relation to its reference point.
5 0
3 years ago
How many grams are in 6.53 moles of Pb
dezoksy [38]
Mr: 207.2
m=n×Mr= 6.53×207.2= 1353.02g
7 0
3 years ago
Part 1: Describe the mass and surface temperature of the supergiant stars.
Julli [10]
Part 1 :- Super gaint star have mass from 10 to 70 solar masses and brightness from 30,000 upto hundreds of thousand times the solar luminosity 
blue super giant surface temperature is 20,000 to 50,000 degree Celsius example :0 Rigel  its mass is around 20 times the sun mass it give light which 60,000 sun together give . 
part 2 :-   HR diagram : hertzsprung -Russel diagram ( attached below)

3 0
3 years ago
I wanted known how many of the reaction below is energy released
Tema [17]

Answer:

2

Explanation:

In two reactions energy is released.

1) C₆H₁₂O₆ + 6O₂    →    6H₂O + 6CO₂ + heat

It is cellular respiration reaction.It involves the breakdown of glucose molecule in the presence of oxygen to yield large amount of energy. Water and carbon dioxide are also produced as a byproduct.

Glucose + oxygen → carbon dioxide + water + 38ATP

2) 2H₂ + O₂   →    2H₂O  ΔH = -486 kj/mol

The given reaction is formation of water. In this reaction oxygen and hydrogen react to form water and 486 kj/mol is also released.

The reaction in which heat is released is called exothermic reaction.

Exothermic reaction:

The type of reactions in which energy is released are called exothermic reactions.

In this type of reaction energy needed to break the bonds are less than the energy released during the bond formation.

For example:

Chemical equation:

C + O₂   →  CO₂

ΔH = -393 Kj/mol

it can be written as,

C + O₂   →  CO₂ + 393 Kj/mol

Endothermic reactions:

The type of reactions in which energy is absorbed are called endothermic reactions.

In this type of reaction energy needed to break the bond are higher than the energy released during bond formation.

For example:

C + H₂O   →  CO  + H₂

ΔH = +131 kj/mol

it can be written as,

C +  H₂O  + 131 kj/mol  →  CO  + H₂

5 0
3 years ago
Will Mark Brainliest!
BigorU [14]

Answer:

when water changes from a liquid on earths surface to a gas in the atmosphere,this is known as evaporation

7 0
3 years ago
Read 2 more answers
Other questions:
  • Which has more moles of carbon atoms, 169.2g of vitamin B6 or 176.1g of vitamin C?
    5·1 answer
  • If the concentration of nucleophile increases does the reaction go faster
    5·1 answer
  • A dilute aqueous solution of an organic compound soluble in water is formed by dissolving 2.35 g of the compound in water to for
    6·1 answer
  • A hypothetical element has an atomic weight of 48.68 amu. It consists of three isotopes having masses of 47.00 amu, 48.00 amu, a
    11·2 answers
  • BALANCE. PCL3+H2O---H3PO3+HCL
    11·1 answer
  • PLEASE HELP! Find out whether the chemical equation is balanced or unbalanced.
    12·1 answer
  • Which of the following samples will have the greatest volume at STP?
    12·1 answer
  • Ethanol absorbs more energy than water because it has a lower heat capacity <br><br> True or false?
    10·1 answer
  • Why do we use the mole concept ??
    10·2 answers
  • Oxygen decays to form nitrogen. 15 8 O → 15 7 N + 0 1 e This type of nuclear decay is called
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!