It's MISSING PLEASE I need the answer now please asap you will be marked brainiest

#1
[tex]\\ \tt\hookrightarrow 2NaBr+Ca(OH)_2\longrightarrow CaBr_2+2NaOH[/tex]
#2
[tex]\\ \tt\hookrightarrow 2NH_3+H_2SO_4\longrightarrow (NH_4)_2SO_4[/tex]
#3
[tex]\\ \tt\hookrightarrow 2C_5H_9O+14O_2\longrightarrow 10CO_2+9H_2O[/tex]
#4
[tex]\\ \tt\hookrightarrow 3Pb+2H_3(PO_4)\longrightarrow 3H_2+Pb_3(PO_4)_2[/tex]