Answer:
C₂H₆
Explanation:
To obtain molecular formula of the gas, you need to find first its molecular mass.
To find molecular mass you need to obtain moles of gasbecause molecular mass is the ratio between mass of the gas and the volume it occupies.
As at STP, 1 mole of a gas occupies 22.4dm³, 1dm³ of gas are:
1dm³ × (1mol / 22.4dm³) = 004464moles.
Its molecular mass is:
1.35g / 004464moles =
30.24g/mol
Now, if the gas is 80%C and 20%H, its <em>empirical formula (Simplest ratio of atoms in a molecule) </em>is:
80% Carbon × (1mol / 12.01g) = 6.66moles C
20% Hydrogen × (1mol / 1.01g) = 19.8moles H
Ratio of H:C is:
19.8 mol H / 6.66mol C = 3
Thus, you can know you will have 3 moles of Hydrogen per mole of Carbon, CH₃ (It weighs 15.04g/mol)
As the gas weighs 30.24 ≈ 2 CH₃
The molecular formula is:
<h3>C₂H₆</h3>
Answer:
4800
Explanation:
using my Cal ex to solve the question
calculation goes like this
2*300*8=4800
Answer:
The density is 20 g/cm3
Explanation:
The density (δ) is the ratio between the mass and the volume of a compound:
δ=m/v= 10 g/0,5 cm3=<em>20 g/cm3</em>
This would be a homogenous mixture (either a colloid or a solution).
Explanation:
an ideal gas moves in constant, rapid motion
