Which coefficient is needed in front of nano3 to balance the equation na2s + zn(no3)2 → zns + _nano3?

Coefficient    is the  number   in front of a formula  in a balanced chemical equation.

For equation to balance the  number of  atoms in product side  must  be equal  to  number  of  atoms  in reactant  side.

Putting  coefficient 2   in front  of NaNO3  balance  the equation  therefore the balanced equation.           the answer is 2

rocks and weathering-matching

sand 60

clay 10

silt 30

sandy loam should be dominated by the sand. as the amount of sand increased, the amount of slit needed to anchor the plants' roots to the sand will also be increased. even though the amount is very little, 10% part of clay is still necessary for proper oxidation.