$2.)$ A toy has a chamber pressure $(Pc)$ of $1\mathrm{.}7$ atm and ambient pressure $(Pa)$ is $1$ atm $.$ The

flow is optimally expanded $)=(Pa.$ The chamber temperature is

$22,=1\mathrm{.}2.$ The thrust produced by the rocket motor is $6$ N $.$ Calculate:

The mass flow rate of gases through the nozzle

Isp

Thrust co$-$efficient

Throat area of the nozzle

Also decide which nozzle to be used.