Question #0a663

1 Answer
Apr 24, 2017

Answer:

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

Explanation:

# C_6H_12O_6 + 6 O_2 ==== 6 CO_2 + 6 H_2O#

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 xx C = 6 xx 12 = 72#
# 12 xx H = 12 xx 1 = 12#
# 6 xx O = 6 xx 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 #CO_2 + H_2O#

# 6 xx .155 = .933 # moles Oxygen, Carbon Dioxide and moles Water

Third convert moles = Oxygen, Carbon Dioxide and Water to grams
#O_2 = 2 xx O = 2 xx 16 = 32 #

#.933 xx 32 = 29.8 # grams Oxygen.

# CO_2 = 1 xx C + 2 xx O = 1 xx 12 + 2 xx 16 = 44 #

# .933 xx 44 = 41.0# grams Carbon Dioxide

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

#,933 xx 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.