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Ronch [10]
3 years ago
13

Which specific gas is most abundant in earth's atmosphere?

Chemistry
2 answers:
elena-14-01-66 [18.8K]3 years ago
8 0
Nitrogen is 78.08% of the air is fills the earth's atmosphere.
erastovalidia [21]3 years ago
5 0

Answer:

nitrogen/78.08%

Explanation:

Hope this helps you and you pass your test good luck:p

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What is a mole and its properties​
klio [65]

One mole of a substance is equal to 6.022 × 10²³ units of that substance (such as atoms, molecules, or ions). The number 6.022 × 10²³ is known as Avogadro's number or Avogadro's constant. The concept of the mole can be used to convert between mass and number of particles.

7 0
3 years ago
Read 2 more answers
!!!PLEASE HELP ASAP!!!!consider this reaction:
gizmo_the_mogwai [7]
9L!!! You take the moles of N2 in the reaction and then divide by one mole of nitrogen. Then you multiply that by the number of hydrogen moles in the reaction which in this case is 3. This gives you an answer of 3. You then take the number of hydrogen moles and multiply it by the 3L giving you 9L of hydrogen.
6 0
3 years ago
If 146.5 g of chromium(lll) chlorate decomposes, what mass of oxygen can be produced?
Vinil7 [7]

Answer:

The Equation for this reaction is as follow,

                               2 Cr(ClO₃)₃    →    2 CrCl₃  +  9 O₂

According to eq,

      604.68 g (2mole) of Cr(ClO₃)₃ produces  =  288 g (9 moles) of O₂

So,

                 146.5 g of Cr(ClO₃)₃ will produce  =  X g of O₂

Solving for X,

                             X  = (146.5 g × 288 g) ÷ 604.68 g

                    X  =  69.77 g of O₂

8 0
3 years ago
Solid potassium chlorate decomposes into solid potassium chloride and oxygen gas. If 2.00 g potassium chlorate decomposes in a c
abruzzese [7]

Answer : The final chamber pressure is 0.746 atm.

Explanation:

First we have to calculate the moles of KClO_3.

Molar mass of KClO_3 = 122.5 g/mole

\text{ Moles of }KClO_3=\frac{\text{ Mass of }KClO_3}{\text{ Molar mass of }KClO_3}=\frac{2.00g}{122.5g/mole}=0.0163moles

Now we have to calculate the moles of O_2.

The balanced chemical reaction will be:

2KClO_3\rightarrow 2KCl+3O_2

From the balanced reaction we conclude that,

As, 2 moles of KClO_3 react to give 3 moles of O_2

So, 0.0163 moles of KClO_3 react to give \frac{3}{2}\times 0.0163=0.0244 moles of O_2

Now we have to calculate the pressure of gas.

Using ideal gas equation:

PV=nRT

where,

P = pressure of gas = ?

V = volume of gas = 0.800 L

T = temperature of gas = 25.0^oC=273+25.0=298K

R = gas constant = 0.0821 L.atm/mole.K

n = number of moles of gas = 0.0244 mole

Now put all the given values in the ideal gas equation, we get:

P\times (0.800L)=0.0244mole\times (0.0821L.atm/mole.K)\times (298K)

P=0.746atm

Therefore, the final chamber pressure is 0.746 atm.

3 0
4 years ago
Which of the followings statements accurately describes renewable energy sources?
grigory [225]
Number one is the correct answer
8 0
4 years ago
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