weight of watch glass+funnel= 121.573g
weight of watch glass+funnel+CaC2O4H2O=122.044 g
how many moles of CaC2O4H2O were isolated during the experiment?
related equations: HO2CCO2H + OH- ->
-O2CCO2- + H2O
Ca2+ + -O2CCO2- + H2O ->CaC2O4*H2O
122.044-121.573 = g CaC2O4.H2O
moles = grams/molar mass
does this equal the same amount of moles of HO2CCO2H?
There is 1 mol CaC2O4.H2O in 1 mol CaC2O4.
To determine the number of moles of CaC2O4H2O isolated during the experiment, we can use the difference in weights before and after adding CaC2O4H2O.
First, we need to find the weight of CaC2O4H2O alone. This can be done by subtracting the weight of the watch glass and funnel (121.573 g) from the weight of the watch glass, funnel, and CaC2O4H2O (122.044 g):
Weight of CaC2O4H2O = Weight of watch glass + funnel + CaC2O4H2O - Weight of watch glass + funnel
Weight of CaC2O4H2O = 122.044 g - 121.573 g = 0.471 g
Next, we need to convert the weight of CaC2O4H2O to moles using its molar mass. The molar mass of CaC2O4H2O is the sum of the atomic masses of calcium (Ca), carbon (C), oxygen (O), and hydrogen (H), taking into account the number of each element in the compound.
Molar mass of CaC2O4H2O = Atomic mass of Ca + 2 * Atomic mass of C + 4 * Atomic mass of O + 2 * Atomic mass of H
Molar mass of CaC2O4H2O = 40.08 g/mol + 2 * 12.01 g/mol + 4 * 16.00 g/mol + 2 * 1.01 g/mol
Molar mass of CaC2O4H2O = 146.08 g/mol
Now, we can calculate the number of moles of CaC2O4H2O by dividing the weight of CaC2O4H2O by its molar mass:
Number of moles of CaC2O4H2O = Weight of CaC2O4H2O / Molar mass of CaC2O4H2O
Number of moles of CaC2O4H2O = 0.471 g / 146.08 g/mol
Calculating this division will give us the number of moles of CaC2O4H2O.