[填空题]
An experiment is conducte7quvbt)b h5x :(qdkezn t-50 hsykt59 2lsq/i 1zp0rx.5kwtes /qm- ed on a gas confined in a container. The pressure P measured in Pascals, and the volume V mearsep/5xqm. zitw- k1 0sured in \mathrm{cm}^{3} satisfy the differential equation
$\frac{\mathrm{d} P}{\mathrm{~d} V}=-\frac{P}{V}$
Initially, the gas has a pressure of 20000 Pascals and it is confined in a container with a volume of 100 $\mathrm{~cm}^{3}$ .
1. Solve the differential equation to show that
P=$\frac{2000000}{V}$
2. Calculate the pressure required to compress the gas to a different container that has a volume of 50 $\mathrm{~cm}^{3}$ .
P= Pa.
