Given the Sample Mass (g) is 0.2254 and AgCl Mass (g) is 0.5295,
find the percent chloride.
[Note: Atomic Mass of Cl is 35.4527g and the Atomic Mass of Ag
is 107.868.]
Please show calculations.
1. A sample of a compound has a mass of 4.86 g and is composed of Silicon and Oxygen. What is the percent composition if 2.27 g of the mass is Silicon?
2. What is the percent composition of all of the elements in saccharin (C7H5SNO3)?
3. What is the mass of phosphorus in a 25.0lb quantity of sodium phosphate?
Given the following data, calculate the percent by mass
Fe2+ in the unknown sample. Assume the experimental data
provided is obtained using the same procedure you will be using in
the lab.
Unknown sample mass = 0.1700
Absorbance (average) of unknown sample =
0.343
Beer’s Law
Data: Slope = 0.2143 L/mg
Fe2+
y-intercept = -0.002
Additional Information (Lab procedure):
1. Obtain and clean three 100-ml volumetric flasks
2. Weigh 0.15-0.20g of the unknown accurately into a clean 100ml
beaker...
A sample of glucose, C6H12O6 has a mass of 300.0g.
What mass of carbon atoms are in the sample?
What mass of hydrogen atoms are in the sample?
What mass of oxygen atoms are in the sample?