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
erastova [34]
3 years ago
10

How much of each gas is there in 100cm3 air?

Chemistry
2 answers:
Akimi4 [234]3 years ago
8 0
Each 100 cm3 of air, constitutes 78cm3 nitrogen, 21cm3 oxygen and 1cm3 constitutes of other gases like Argon, ozone, carbon dioxide and water vapour in small amounts.
Elan Coil [88]3 years ago
8 0
Dry air contains 78% nitrogen , 21% oxygen and 1%noble gases.
You might be interested in
____________ is refining the extracted raw metals into a purest form
Alex

Answer:

Extractive metallurgy

Explanation:

Extractive metallurgy is the practice of removing valuable metals from an ore and refining the extracted raw metals into a purer form.

8 0
3 years ago
How will the addition of a catalyst affect the reaction rate of the chemical reaction?
Rina8888 [55]

Answer:

It will cause the reaction rate to increase.

3 0
3 years ago
Read 2 more answers
Write the expression for the equilibrium constant for the reaction represented by the equation CaCO3(s)⇌Ca2+(aq)+CO32−(aq). Is K
Alexeev081 [22]

<u>Answer:</u> For the given reaction, the value of K_c is greater than 1

<u>Explanation:</u>

For the given chemical equation:

CaCO3(s)\rightleftharpoons Ca^{2+}(aq.)+CO_3^{2-}(aq.)

The expression of K_c for above equation follows:

K_c=\frac{[Ca^{2+}]\times [CO_3^{2-}]}{[CaCO_3}]\\\\K_c=[Ca^{2+}]\times [CO_3^{2-}]

The concentration of pure solids and pure liquids are taken as 1 in equilibrium constant expression

As, the denominator is missing and the numerator is the only part left in the expression. So, the value of K_c will be greater than 1.

Hence, for the given reaction, the value of K_c is greater than 1

5 0
3 years ago
) Starting with 5.00 g barium chloride n hydrate yields 4.26 g of anhydrous barium chloride after heating. Determine the integer
RSB [31]

Answer:

2

Explanation:

Mass of water molecule = mass of hydrated salt - mass of anhydrous salt

Mass of water molecule = 5.00 - 4.26 = 0.74g of water molecule.

Number of moles = mass / molarmass

Molar mass of water = 18.015g/mol

No. of moles of water = 0.74 / 18.015 = 0.0411 moles.

Mass of BaCl2 present =?

1 mole of BaCl2 = 208.23 g

X mole of BaCl2 = 4.26 g

X = (4.26 * 1) / 208.23

X = 0.020

0.020 moles is present in 4.26g of BaCl2

Mole ratio between water and BaCl2 =

0.0411 / 0.020 = 2

Therefore 2 molecules of water is present the hydrated salt.

4 0
3 years ago
What are chartistics of neutrons?
mafiozo [28]

Answer:

Neutral subatomic particle that is a constituent of every atomic nucleus except ordinary hydrogen.

Explanation:

4 0
3 years ago
Other questions:
  • Which compound has the strongest hydrogen bonding between its molecules?
    6·1 answer
  • What forms when iron-53 decays?
    12·2 answers
  • Which best describes an element? A pure substance. A type of a mixture. A pure compound. An impure substance.
    11·2 answers
  • What is the meaning of radioactive substance​
    8·2 answers
  • A pharmacist measures the mass of a powdered drug. The mass is 506 mg . What is the mass in grams? Write your answer as a decima
    9·1 answer
  • What makes an ionic compound an ionic compound?
    11·1 answer
  • How does water move on its own concentration gradient?
    5·2 answers
  • PLEASE HELP?? :|<br> AS SOON AS POSSIBLE!!
    14·2 answers
  • Identify Which two types of subatomic particles are located in the nucleus?
    5·1 answer
  • In which of these situations should a fire blanket be used?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!