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
Free_Kalibri [48]
3 years ago
11

What percentage of gases are in the earth?

Chemistry
1 answer:
ioda3 years ago
5 0

Answer:

By volume, dry air contains 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.04% carbon dioxide, and small amounts of other gases. Air also contains a variable amount of water vapor, on average around 1% at sea level, and 0.4% over the entire atmosphere.

Explanation:

You might be interested in
A measure of the extra charges that are on an object is called
SashulF [63]
Charge is the measure of extra positive or negative particles an object has
8 0
3 years ago
A scientist has 0.12 miles of a gas at a pressure of 4.06 kPa and a volume of 14 liters in an enclosed container. What is the te
natka813 [3]

Answer:

56972.17K

Explanation:

P = 4.06kPa = 4.06×10³Pa

V = 14L

n = 0.12 moles

R = 8.314J/Mol.K

T = ?

We need ideal gas equation to solve this question

From ideal gas equation,

PV = nRT

P = pressure of the ideal gas

V = volume the gas occupies

n = number of moles

R = ideal gas constant

T = temperature of the gas

PV = nRT

T = PV / nR

T = (4.06×10³ × 14) / (0.12 × 8.314)

T = 56840 / 0.99768

T = 56972.17K

Note : we have a large number for temperature because we converted the value of pressure from kPa to Pa

7 0
3 years ago
2. zinc (III) chlorate →
faust18 [17]

Answer:

27

Explanation:

5 0
3 years ago
Read 2 more answers
Determine the total time that must elapse until only ¼ of an original sample of the radioisotope Rn-222 remains unchanged.
Arte-miy333 [17]

Answer:

7.6 days

Explanation:

Radon is a radioactive element and Radon-222 is it's most stable isotope. The half-life of Radon-222 has been found to be approximately 3.8 days.

Let, the initial amount of the Rn-222 = 1 = A

Final amount = \frac{1}{4} = A'

We will use the following relation for calculating time elapsed in the decay

A' = A(\frac{1}{2} )^\frac{t}{t_1_/_2}  }

Thus,

\frac{1}{4} =1(\frac{1}{2} )^\frac{t}{3.8}

We can write is as,

(\frac{1}{2} )^2=(\frac{1}{2} )^\frac{t}{3.8}

Since the base in both sides are equal, powers can also be equal and thus,

2=\frac{t}{3.8}

So, t = 7.6 days

5 0
3 years ago
Who were Watson and crick and what important contribution to DNA science did they make?
Leto [7]
 Watson and Crick first contribution to DNA science was they proposed the theory of the structure of DNA. Watson  and Crick's model DNA In the shape of a double helix.  they determined the structure of DNA, it is a double helix. DNA molecule that helped scientist better understand the structure of DNA. 
7 0
3 years ago
Other questions:
  • During osmosis, water moves from a region of _____ to a region of _____.both "high solvent concentration; low solvent concentrat
    10·2 answers
  • What are the five main chemical compounds of life
    12·1 answer
  • Earth is unique because it is the _____.
    10·2 answers
  • Please hurry i’m taking a test
    10·2 answers
  • If an object has more positive charges than negative charges, the object has an overall?
    14·1 answer
  • 1) The heat of combustion for the gases hydrogen, methane and ethane are −285.8, −890.4 and −1559.9 kJ/mol respectively at 298K.
    7·1 answer
  • When a mixture of iron powder and sulphur is heated it glows more brightly than that of iron filings and sulphur.Explain this ob
    7·1 answer
  • How many L of 3.0 M H2SO4 solution can be prepared by using 100.0 mL OF 18 M H2SO4?
    14·1 answer
  • If you are given 0.25 mol of Fe and 0.5 mol of O2, what is the limiting reactant?
    12·2 answers
  • What are different types of bacteria classified?​
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!