Search & Filtering
11. Describe how you would prepare 465 mL of 0.3550 M
potassium dichromate solution starting with
(b) 0.750 M potassium dichromate solution
What is the maximum amount in moles of P
2
O
5
P2O5 that can theoretically be made from 112 g
g of O
2
O2 and excess phosphorus?
A 10.00 mL sample of ethanol is added to 250.0 mL of water in order to observe the freezing point depression of the water. Consider the possible errors in this experiment, and determine whether each would cause the freezing point of the water to increase, decrease, or remain the same compared with the expected results
The freezing point depression constant, Kf, for camphor is very large, 37.7 ⁰C•kg/mol, making camphor a useful solvent to determine the mass of larger molecules, such as peptides. 122.5 mg of a peptide dissolved in 1.50 g of camphor gives a freezing point depression (ΔTf) of 1.13 ⁰C. What is the molecular mass of the protein?
human blood typically contains 1.04 kg/l of platelets. a 1.35 pints of blood would contain what mass (in grams)?
Propane (C3H8) burns in oxygen to produce carbon dioxide gas and water vapor. (a) Write a balanced equation for this reaction. (b) Calculate the number of liters of carbon dioxide measured at STP that could be produced from 7.45 g of propane.
4. Calculate the concentration of each ions remaining in the solution when 100.0mL of 0.20M Silver Nitrate solution reacts with 100.0mL of 0.15M Calcium Chloride solution. A. 0.050M CI,0.075M Ca ,0.100M NO. B. 0.075M CL,0.050M Ca²+ ,0.100M NO₂. C. 0.100M CI,0.075M Ca² ,0.050M NO
1. 19 ^ 42 K - 1 ^ 0 e+
State whether each of the following situations is an example of surface tension, capillary action, or adhesion. Include an explanation to support each answer.
1. After it rains, you have water droplets on your car.
2. You see an insect walking on a pond.
3. You left the end of a towel in a bucket of water. The end that is hanging over the rim of the bucket is wet as well.
State whether each of the following situations is an example of surface tension, capillary action, or adhesion. Include an explanation to support each answer.
1. After it rains, you have water droplets on your car.
2. You see an insect walking on a pond.
3. You left the end of a towel in a bucket of water. The end that is hanging over the rim of the bucket is wet as well.
