Respuesta :

kenmyna
The  mass  of 720 ml sample  of CLF3 at 735 torr and  43 c  is  calculated as  follows
mass= moles x molar mass

molar mass of ClF3=92.448 g/mol

calculate  the number of moles of ClF3  by use of ideal   gas  equation

n(number of moles =  PV/RT
p(pressure)= 735 torrs
V(volume)=720ml = 720/1000 =0.72 L
T(temperature)=   43  +273 =  316 k
R(gas  constant)= 62.364 L.torr/mol.k

n is therefore = ( 0.72 l x735  torr)  /  62.364 l.torr/Mol.k  x  316 k)  = 0.0269  moles

mass  is therefore=  0.0269 mol  x 92.448  g/mol = 2.487 grams


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