PLEASEEEEEEEE ASAPPPPPWhat is the density of a piece of cardboard that has a mass of 250 g and volume of 46 mL? *
2 answers:
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Given :
A compound has a molar mass of 129 g/mol .
Empirical formula of compound is C₂H₅N .
To Find :
The molecular formula of the compound.
Solution :
Empirical mass of compound :
Now, n-factor is :
Multiplying each atom in the formula by 3 , we get :
Molecular Formula, C₆H₁₅N₃
Hello!
At Standard Pressure and Temperature, an ideal gas has a molar density of 0,04464 mol/L.
So, we need to apply a simple conversion factor to calculate the density of Sulfur Dioxide using the molar mass of Sulfur Dioxide.
So, the Density of Sulfur Dioxide (SO₂) at STP is 2,8599 g/L
Have a nice day!
At Standard Pressure and Temperature, an ideal gas has a molar density of 0,04464 mol/L.
So, we need to apply a simple conversion factor to calculate the density of Sulfur Dioxide using the molar mass of Sulfur Dioxide.
So, the Density of Sulfur Dioxide (SO₂) at STP is 2,8599 g/L
Have a nice day!
Answer : The rate constant at 785.0 K is,
Explanation :
According to the Arrhenius equation,
or,
where,
= rate constant at
=
= rate constant at
= ?
= activation energy for the reaction = 262 kJ/mole = 262000 J/mole
R = gas constant = 8.314 J/mole.K
= initial temperature =
= final temperature =
Now put all the given values in this formula, we get:
Therefore, the rate constant at 785.0 K is,