![Picture](/uploads/2/4/5/5/24554720/190599411.jpg)
Gram to Gram stoicheometry is used to make calculations with grams easier.
Steps
1. Properly balance the equation
2.Convert grams to moles
3.Use mole ratio to calculate the moles of other substances
4.Convert moles of wanted substance to desired units.
Balancing the equation
You need the same number of each kind of element on both sides.
"In an ordinary chemical reaction, matter is neither created nor destroyed."
Examples.
N2(g) +H2 (g) ---} NH3(g)
N2(g) + 3H2(g) ----} 2NH3(g)
Converting grams to moles
x gfm
{ ------- ____ = moles
/ gfm
Sometimes you will have to convert from grams to moles, or vice versa. to do this you will need to know the gfm. Gram formula mass, of the particular substance.
Steps
1. Properly balance the equation
2.Convert grams to moles
3.Use mole ratio to calculate the moles of other substances
4.Convert moles of wanted substance to desired units.
Balancing the equation
You need the same number of each kind of element on both sides.
"In an ordinary chemical reaction, matter is neither created nor destroyed."
Examples.
N2(g) +H2 (g) ---} NH3(g)
N2(g) + 3H2(g) ----} 2NH3(g)
Converting grams to moles
x gfm
{ ------- ____ = moles
/ gfm
Sometimes you will have to convert from grams to moles, or vice versa. to do this you will need to know the gfm. Gram formula mass, of the particular substance.
To find the gfm you will add the atomic mass of all of the elements in a substance. Multiply your subscripts ignore your coefficents
Mole ratio
A mole ratio is the ratio between the amounts in moles of only two compounds involved in a chemical reaction. In stoichiometry, you will use the smallest mole to find the mass of your product.
*helpful tip: solids, liquids, and gasses have ratios equal to each other using coefficients, you can find the moles of a similar substance using simple math
Conversion
Simplify multiply the moles of your product by its gfm, and you have your mass of the product.
Mole ratio
A mole ratio is the ratio between the amounts in moles of only two compounds involved in a chemical reaction. In stoichiometry, you will use the smallest mole to find the mass of your product.
*helpful tip: solids, liquids, and gasses have ratios equal to each other using coefficients, you can find the moles of a similar substance using simple math
Conversion
Simplify multiply the moles of your product by its gfm, and you have your mass of the product.