Question

Please Help! I just started balancing equations and my teacher gave me this. Thanks in advance! :D

Answer 1

So you need to put numbers before each compound to make sure there are the exact same number of elements on each side. If you put a 4 before NH4 there are 4 Nitrogen and now 16 hydrogen. I just played around with numbers and guessed until I got them even.

Answer 2

3. AlCl3 + 3 AgNO3 => Al( NO3) 3 + 3 AgCl

4. ( NH4)2 Cr2O7 => N2 + Cr2O3 + 4 H2O

5. Al2S3 + 6 NaHCO3 => 2 Al(OH)3 + 3 Na2SO2 + 6 CO

Explanation: Solution attached on the balanced equation.