Balance each of the following equations occuring in basic aqueous solution. In each case enter the number (n) of electrons transferred from the reducing agent to the oxidizing agent for the conventionally balanced equation (full reaction). Sn(OH)3 + Bi(OH)3 → Bi + Sn(OH)6²- n Sn(OH)²¯ + Si →→ SiO3²¯ + HSnO₂¯ SnO2² + Bi(OH)3 → SnO3² + Bi Al + H₂BO3 H₂AIO3 + BH4