(Solved): help showing steps for these so i understand thanks. also provided answersanswers 3. Ammonium sulfat ...

3. Ammonium sulfate, an important fertilizer, can be prepared by the reaction of ammonia with sulfuric acid according to the following balanced equation: $$2{\mathrm{NH}}_3(\mathrm{g})+{\mathrm{H}}_2{\mathrm{SO}}_4?{\left({\mathrm{NH}}_4\right)}_2{\mathrm{SO}}_4(\mathrm{aq})$$ Calculate the volume of $${\mathrm{NH}}_3$$ (in liters) needed at $$20^{?}\mathrm{C}$$ and $$25.0\mathrm{atm}$$ to react with $$150\mathrm{kg}$$ of $${\mathrm{H}}_2{\mathrm{SO}}_4$$. 4 . Mixtures of helium and oxygen are used in scuba diving tanks to help prevent "the bends." For a particular dive, $$46\mathrm{L}\mathrm{He}$$ at $$25^{?}\mathrm{C}$$ and $$1.0\mathrm{atm}$$ and $$12\mathrm{L}{\mathrm{O}}_2$$ at $$25^{?}\mathrm{C}$$ and 1.0 atm were pumped into a tank with a volume of $$5.0\mathrm{L}$$. Calculate the partial pressure of each gas and the total pressure in the tank at $$25^{?}\mathrm{C}$$ 5. A $$175\mathrm{g}$$ sample of a metal at $$93.5^{?}\mathrm{C}$$ was added to 105 grams of water at $$23.5^{?}\mathrm{C}$$ in a perfectly insulated container. The final temperature of the water and metal was $$33.8^{?}\mathrm{C}$$. Calculate the specific heat of the metal in $$\mathrm{J}/{\mathrm{g}}^0\mathrm{C}$$. 3. $$2,945\mathrm{L}{\mathrm{NH}}_3$$ 4. $${\mathrm{P}}_{\mathrm{He}}=9.3\mathrm{atm},{\mathrm{P}}_{{\mathrm{O}}_2}=2.4\mathrm{atm}$$, and $${\mathrm{P}}_{\text{Tota1 }}=11.7\mathrm{atm}$$ 5. $$0.43\mathrm{J}/{\mathrm{g}}^{?}\mathrm{C}$$