Answer is: ammonia has a higher boiling point because it has stronger intermolecular forces.
Intermolecular forces<span> are the forces between </span><span>molecules. The stronger are intermolecular forces, the higher is boiling point of compound, because more energy is needed to break interaction between molecules.
</span>There are several types of intermolecular forces: hydrogen bonding, i<span>on-induced dipole forces, ion-dipole forces andvan der Waals forces.</span>
Using ideal gas equation,
PV=nRT
P=199 kpa
V=4.67 L
T=30+273K= 303K
n= number of moles of gas
R=8.321 L·kPa·K-1·mol-1
So using ideal gas equation,
n=PV/RT
=199*4.67/8.321*303\
=0.37 mol
Answer:
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Explanation: Hope it helps
Answer : The total pressure in the flask is 1.86 atm.
Explanation :
First we have to calculate the pressure of 
gas.
Using ideal gas equation :
where,
P = Pressure of gas = ?
V = Volume of gas = 765 mL = 0.765 L (1 L = 1000 mL)
n = number of moles
w = mass of gas = 1.25 g
M = molar mass of gas = 44 g/mol
R = Gas constant = 
T = Temperature of gas = 
Putting values in above equation, we get:
Now we have to calculate the total pressure in the flask.
Given :
conversion used : (1 atm = 760 mmHg)
Now put all the given values in the above expression, we get:
Therefore, the total pressure in the flask is 1.86 atm.
Answer:
B. Beryllium
Explanation:
because the trend of ionization is going up a group it increases, as going across a period it deceases. beryllium being closes to the hist point in the periodic table it has the highest ionization energy. hope this helps.
