Answer:
0.0188
Explanation:
using pv=nRt
where v--volume
p pressure
n number of moles
t temperature in kelvin
R molar gas constant=8.314atmmoldm^-3k^-1
4.972 × 9.583 =n × 8.314 × (31.8 + 273)
note I changed 31.8c to kelvin
making n subject of the formula
n=(4.972 × 9.583)/(8.314 ×(31.8 + 273)
n=(4.972 × 9.583)/(8.314 ×(304.8))
n=0.0188 moles
