# Question 0a663

Apr 24, 2017

Write a balanced chemical equation Convert grams to moles: moles to moles: and moles back to grams.

#### Explanation:

${C}_{6} {H}_{12} {O}_{6} + 6 {O}_{2} = = = = 6 C {O}_{2} + 6 {H}_{2} O$

There are 6 Carbons in the reactants and 6 Carbons in the products.
There are 12 Hydrogens in both a reactants and products
There are 18 Oxygens is both the reactants and products.

So the equation is balanced.

Now convert 28 grams of glucose to moles glucose.

$6 \times C = 6 \times 12 = 72$
$12 \times H = 12 \times 1 = 12$
$6 \times O = 6 \times 16 = 96$

$72 + 12 + 96 = 180$ grams/mole

28/180 = .155 moles. glucose.

Second convert moles glucose to moles Carbon Dioxide and Water.

The ratio is 1: 6 so 6 x moles glucose = moles $C {O}_{2} + {H}_{2} O$

$6 \times .155 = .933$ moles Oxygen, Carbon Dioxide and moles Water

Third convert moles = Oxygen, Carbon Dioxide and Water to grams
${O}_{2} = 2 \times O = 2 \times 16 = 32$

$.933 \times 32 = 29.8$ grams Oxygen.

$C {O}_{2} = 1 \times C + 2 \times O = 1 \times 12 + 2 \times 16 = 44$

$.933 \times 44 = 41.0$ grams Carbon Dioxide

# H_2O = 2 xx H + 1 xx O = 2 xx 1 + 1 xx 16 = 18

$, 933 \times 18 = 16.8$ grams Water

1. write a balance equation
2. Change grams to moles.
3. Change moles to moles
4. Change moles to grams.