Suppose you are instructed to measure the density of a different metal using a 50ml pycnometer. The mass of the pycnometer is 23.721g. After filling the pycnometer with water at 24.0 C, you find the mass of the pycnometer and water is 72.457g. The water is emptied out and the metal is placed in the pycnometer. The metal, by itself, is found to weigh 51.118g. The pycnometer with the metal in it is filled with water again and the pycnometer, water, and metal are found to weigh 115.442g. What is the density of the metal?

Suppose that a student performing this experiment did not remove ALL the air bubbles in the micropycnometer when filling it with their liquid unknown. Assuming there were no other errors, would the density of the liquid unknown be high, low, or unaffected by the error?

Suppose that a student performing this experiment did not remove ALL the air bubbles in the micropycnometer when filling it with water. Assuming there were no other errors, would the density of the liquid unknown be high, low, or unaffected by the error?

Find percent yield for crude and pure caffeine?

Mass of Tea Leaves: 15.1808 grams

Recovered Crude Caffeine: 0.146 grams

Pure Caffeine: 0.057 grams

So when I do percent yield of the pure substance would it be0.057g/0.146g*100 OR 0.057g/15.1808g*100

Or is this done differently by finding the using the reactants?Limiting reagent? Or can I do it this way?

If you need to reactants. I used 15.1808g tea, 500 mL DI water,7.5g Calcium Carbonate, Dichloromethane, MagenesiumSulfate.

Find the percent yield of crude and pure trimyrisitn?

Mass of nutmeg: 5.054 grams

Crude trimyristin: 1.402 grams

Pure Trimyristin: 0.407 grams

Again for the pure percent yield do I do pure/crude*100OR pure/total mass*100?

5.054 g Nutmeg, 50 mL dichloromethane, washed with (2)10 mLacetone.

Find the density of the known liquid?

Wt. of Pycnometer: 7.8625 grams

Wt. of Pycnometer +DI Water: 9.8876 grams

Wt. of Pycnometer + Known Liquid: 9.6235 grams