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
MissTica
2 years ago
14

What are the categories when earth is divided according to its chemical composition? ​

Chemistry
1 answer:
STALIN [3.7K]2 years ago
3 0
The Earth is divided into three chemical layers: the Core [Inner Core (D) and Outer Core (C)], the Mantle (B) and the Crust (A). The Core is predominantly composed of iron and nickel. Even after 4.5 billion years of cooling, the Earth's core remains very hot.
You might be interested in
Which of the following mixtures may be act as a buffer solution?
lions [1.4K]

Answer:

B) HF, NaF

Explanation:

  • A buffer solution is made up of a weak acid and its conjugate base.
  • In this case, HF is a weak acid and NaF is the conjugate base, therefore the mixture of HF,  and NaF would make a perfect buffer solution.
  • The buffer would have the weak acid HF and its conjugate base, F- which comes from the soluble salt NaF.
4 0
3 years ago
How many liters of space will 7.80 moles of methane gas (CH4) occupy at STP
Alchen [17]

Answer:

V CH4(g) = 190.6 L

Explanation:

assuming ideal gas:

  • PV = RTn

∴ STP: T =298 K and P = 1 atm

∴ R = 0.082 atm.L/K.mol

∴ moles (n) = 7.80 mol CH4(g)

∴ Volume CH4(g) = ?

⇒ V = RTn/P

⇒ V CH4(g) = ((0.082 atm.L/K.mol)×(298 K)×(7.80 mol)) / (1 atm)

⇒ V CH4(g) = 190.6 L

4 0
3 years ago
1. A charged group of covalently bonded atoms is known as
katrin2010 [14]
Its known as covalently bonded atoms
7 0
2 years ago
A sample of an unknown metal has a mass of 120.4 g. As the sample cools from 90.5°C to 25.7°C, it releases 7020 J of energy. Usi
Dafna1 [17]

Answer:

Explanation:

sheesh i wouldn’t know

6 0
2 years ago
4.5x10'25 atoms of nickel equal how many moles
olga2289 [7]
1 mole of any particles = 6.02* 10²³ particles

4.5*10²⁵ atoms Ni* 1 mol Ni/6.02*10²³ Ni ≈ 74.75≈ 75 mol Ni
 
8 0
2 years ago
Other questions:
  • Which type of reaction does this diagram represent? A central starburst has superscript 2 upper H and superscript 3 upper H poin
    11·2 answers
  • What attractive force holds two hydrogen atoms and one oxygen atom
    9·1 answer
  • Ludwig Boltzmann developed a model that relates entropy to _________.
    15·1 answer
  • The process or method , by which a magnet loses its power , is called…………………… ..
    10·1 answer
  • What is the freezing point of a .743 m aqueous solution of KCl
    5·1 answer
  • What is the mass of an object that has a density of 0.500 g/cm3 and a volume of 5.00 mL?
    11·1 answer
  • What are two effects of too much exposure to radiation?
    5·1 answer
  • Using the equation below, calculate how many grams of water (H2O) you have if you start with 12 grams of
    7·1 answer
  • 100 points if you answer this<br>A B and C please people​
    11·1 answer
  • Escaping from the haunted house, Anna ran home immediately to her chemistry lab
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!