For the reation: C3H8+5 02 =3 CO2+4 H2O
How many moles of C3H8 are needed to make 3.60 grams of H2O? I think the ans is 0.05 moles c3h8
right
thank you so much for all your help, i feel really good about taking the exam 2morrow
Please help gimme equation I'm desperate
To determine how many moles of C3H8 are needed to produce a certain amount of H2O, we need to use stoichiometry.
Step 1: Write the balanced equation:
C3H8 + 5 O2 -> 3 CO2 + 4 H2O
Step 2: Calculate the molar mass of H2O:
H2O = (2 * 1.01 g/mole) + (16.00 g/mole) = 18.02 g/mole
Step 3: Convert the given mass of H2O to moles:
moles of H2O = mass of H2O / molar mass of H2O
moles of H2O = 3.60 g / 18.02 g/mole = 0.1998 moles (rounded to four decimal places)
Step 4: Use the stoichiometric ratio to find the number of moles of C3H8:
From the balanced equation, the stoichiometric ratio between C3H8 and H2O is 1:4 (1 mole of C3H8 produces 4 moles of H2O).
moles of C3H8 = moles of H2O / stoichiometric ratio
moles of C3H8 = 0.1998 moles / 4 = 0.04995 moles (rounded to five decimal places)
Therefore, the answer is approximately 0.04995 moles of C3H8, which is equivalent to 0.05 moles of C3H8 (rounded to two decimal places).
So, your answer of 0.05 moles of C3H8 is correct.