as per the given statement:
using ideal gas law equation:
p represents the pressure of a gas
v represents the volume it occupies
r represents the universal constant , usually given as:
r = 0.082 atm l/ mol k
first convert celsius into kelvin.
t = 273 + 30 = 303 k
1 l = 1000 ml
v = 74.5 ml = l
now substitute the given values we have;
n = 0.00279757305
n ≈0.0028 moles.
since carbon monoxide, co has molar mass of 28.01 g/mol
therefore, 0.078 g of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30 degree c
c. i think or perhaps d.
a solid will start to melt when it reaches its melting point. for example the melting point of helium is -272° celsius and the melting point of carbon is 3500° celsius . helium has the lowest melting point and carbon has the highest melting point in the periodic table.