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A perfectly square piece of gold foil measuring 3.3 mm on an edge is isolated from a bottle of liqueur. On a mass balance, the piece of foil weighs 0.0013 g. The density of gold is 10.3 g/cm^3
High blood levels of triglycerides are thought to be partially responsible for clogging of arteries, heart attacks, and strokes. A female had a blood test that gave a high triglyceride level
Calculate the mass of Cu(NO3)2·3H2O needed to prepare 50.0mL of a 0.50 M Cu(II) solution?
Some velomobile seats have been designed to hold ice packs inside their cushions. If you started a ride with ice packs that held 1700 g of frozen water at 0 degrees C , and the temperature of the water at the end of the ride was 32 degrees C.
Consider the following reaction: 2H2O + 2SO2 2H2 + 3O2 A reaction mixture initially contains 2.8M H2O and 2.6 M SO2.
How many grams of steam at 105 degree celcius must be mixed with 25g of ice at -15 degree celcius in an adiabatic calorimeter with a heat capacity of zero in order to produce a final mixture
How much CH4, in grams, is needed to produce 50.0 grams of CHCl3?
The initial mass of a radioisotope is 10.0g. If the radioisotope has a half-life of 2.75 years, how much remains after four half-lives?
Celsius and -125 degrees Celsius , respectively. Calculate the entropy changes for fusion ( solid to liquid) and vaporization (liquid to gas ).
A 1 L solution of 1.5 M acetic acid and 1.5 M sodium acetate has a ph of 4.74. 10 ml of 0.1 M NaOH were added to the solution followed by the addition of 50 ml of 0.02 M HCl.
You have a 10.40-g mixture of table sugar (C 12 H 22 O 11) and table salt (NaCl). When this mixture is dissolved in 150. g of water, the freezing point is found to be-2.24°C. Calculate the percent by mass of sugar in the original mixture.
At high temperatures, ammonia can react with oxygen according to the following unbalanced reaction: NH3 + O2 ---> NO + H2O If 5.76 moles of NH3 react with 12.2 moles of oxygen
Which of the following terms would be used in a description of the mechanism of this reaction? tertiary carbanion, 2-methylpentoxonium ion, sp hybridized pentyne, vicinal dihydroxide, or hydroxide ion.
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