You could break down the periodic table and learn each groups or practice writing each groups in different colors.
Considering the molar mass of
S = 32gmol¯¹
O = 16gmol¯¹
Therefore
SO3 = 32+(16×3)
= 32+ 48
= 80gmol¯1
What helps me to balance equations is to list the elements i have on each side of the equation, and use tally marks to see what I have and don't have. Then when I'm done balancing, I tally again to make sure everything matches up.
On the left side, you have 1 Al, and 2 O. On the right side, 1 Al and 3 O.
In order for the equation to balance, you need to place a 2 in front of the AlO on the right side. This would make the Al have 2 atoms and the O have six. On the left side, you need to place a 2 in front of the Al and a 3 in front of the O, making it six. Left side: 2 Al's 6 O's. Right side: 2 Al's and 6 O's. Matches!
Voltaic cells are used as a source of electrical power. By their nature, they produce direct current<span>.
</span>A voltaic cell, or galvanic cell<span> is an </span>electrochemical cell that uses a chemical reaction to produce electrical energy. The cell consists of two metals: one called anode where oxidation (loss of electrons) occurs and the other cathode where reduction (gain of electrons) occurs.The salt bridge connect the anode with the cathode. It is the <span>chamber of electrolytes necessary to complete the circuit in a voltaic cell.
</span><span>The external circuit is used to conduct the flow of electrons between the electrodes of the voltaic cell and includes a load.</span>
<span>The key to gathering the electron flow is to separate the oxidation and reduction half-reactions, connecting them by a wire, so that the electrons must flow through that wire.</span>
