It is already balanced, you have the same number of H's and the same number of Cl's in each side of the equation.
C3h8 + 5o2 --> 3co2 + 4h2o
Ba + 2H2O → Ba(OH)2 + H2.
I2 + 10 hno3 = 2 hio3 + 10 no2 + 4 h2o
H
The formula for H plus 1 plus H minus 1 is 2H. This is because the +1 and -1 charges cancel each other out, leaving only the H atom.
The formula for hydrogen plus hydrogen is H + H, which combines to form the molecule H2.
H+ or a proton.
This is a redox reaction where NO2 is oxidized to HNO3 and H2O is reduced to NO. To balance the equation, start by balancing the atoms of each element (N, O, and H) on both sides of the reaction. Then, add electrons to balance the charges. The balanced equation is: 3NO2 + H2O -> 2HNO3 + 2NO + 2H+.
(b+h)(b+h)= b2+2hb+h2.
I would tell, no reaction will occur the way the question has been asked.
Plus $85 billion
To balance the equation KO2 + H2O -> KOH + O2, start by balancing the oxygen atoms, then balance the potassium atoms, and finally balance the hydrogen atoms. The balanced equation is 2KO2 + 2H2O -> 2KOH + O2.