The pressure exerted by 0.57 moles of CO2 at a temperature of 25°C and a volume of 500 ml is 28 atm.
<u>Explanation:</u>
According to ideal gas law,
PV = nRT
where P represents the pressure of a gas,
V represents the volume of a gas,
n represents the number of moles,
R represents the gas constant = 0.0821 L atm / mol K.
T represents the temperature of a gas.
Given V = 500 ml = 0.5 l, T = 25°C = 298 K, n = 0.57 mol
PV = nRT
P = nRT / V
= (0.57 0.0821 298) / 0.5
P = 28 atm.
The pressure of a gas is 28 atm.
Answer:
223 g
Explanation:
Molar mass Fe = 55.845 g/mol
mass=molar mass* number of moles=55.845*4.00≈223 g
Answer:
So, when bromine comes near the ethylene pi bond, it <u><em>attacks the electron and grabs it</em></u>, but the second bromine steals it away and departs as Br-. After all, bromine is more electronegative than carbon; the first bromine is just a link in the chain of events that allows the second bromine to escape with an electron.
1) chemical formula (molecular formula) shows the total number and kinds of atoms in a molecule, but not their structural arrangement.
For example C₄H₂N₂O₄, molecular formula shows that compound has four carbon, two hydrogen, two nitrogen and four oxygen atoms.
2) The structural formula is a graphic representation of the molecular structure, it shows arrangement of the atoms and the covalent bonds between them.
For example, structural formula for hydrochloric acid is H-Cl.