[XarokLasa]

im having trouble with these 2 problems and i could really use some help:

Urea is produced commercial from the reaction: 2NH 3 (g) + CO 2 (g) -> H 2 NCONH 2 (s) + H 2 O(g) Ammonia at a temperature of 223 °C and a pressure of 90.0 atm flows into a reactor at a rate of 500.0L/min. Carbon dioxide at a temperature of 223 °C and a pressure of 45.0 atm flows into the reactor at a rate of 600.0L/min. At what rate (in g/min) is urea being produced? Assume 100% yield. Report your answer in scientific notation to 3 significant figures. (g/min)

that , and also this one:
Consider two flasks that are connected by a valve. One flask has a volume of 2.00L and contains H 2 at a pressure of 200.0 Torr. The other flask has a volume of 3.00L and contains N 2 at an unknown pressure. If the total pressure in the flasks is 260.0 Torr after the valve is opened, what was the initial pressure of the N 2 in the 3.00L flask? (Torr)