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A coffee-cup calorimeter contains 140.0 g of water at 25.2 °C . A 122.0-g block of copper metal is heated to 100.4 °C by putting it in a beaker of boiling water. The specific heat of Cu(s) is 0.385 J/g·K . The Cu is added to the calorimeter, and after a time the contents of the cup reach a constant temperature of 30.2 °C .What would be the final temperature of the system if all the heat lost by the copper block were absorbed by the water in the calorimeter?
what are the structures for glycylserine and
Problem- What concentration of silver nitrate in (ppm) is present in 7.1*10^-7 M AgNO3(aq) ? For very dilute aqueous solutions, you can assume the solution's density is 1.0g/mL The molar mass of AgNO3 ia 169.9g/mol
Describe each of the following equations in terms of 1)number of particals and 2)number of moles: a) 2Al(s)+3Cl2(g)--->2AlCl3(s); b) 4HCl(g)+O2(g)--->2Cl2(g)+2H2O(g).
A piece of silver with a mass of 418 g has a heat capacity of 99.1 J/Celcius. What is the specific heat of silver
consider the dissolution of mns in water ksp 3.0 times 10-14.mnss h2ol mn2aq hs-aq oh-aqhow is the solubility of
a sample of oxygen gas o2 is collected over water h2o at 25 0c temperature and a total pressure of 654 torr. the volume
Problem- The specific rate constant for the decay of Tc-95 (Technetium 95 is a radioactive isotope) Te is 0.0346 h-1. What is its half-life
A student is preparing a sugar water solution to make rock candy. When the student adds some sugar to the solution a large amount of sugar crystallizes
Limesonte is another form of CaCO3. Sandstone is primarily silica or sand, SiO2. On the basis of observations made in today's experiment, explain a test that would allow you to distinguish between limestone and sandstone.
Silver chloride usually does not ppt in solution of 1.0M NH3. However AgBr has a smaller Ksp. Will AgBr ppt form a solution containing 0.01M AgNO3, 0.01M NaBr and 1.0 M NH3? Ksp = 5 x 10^-13
What volume (in milliliters) of 0.190 M NaOH should be added to a 0.135 L solution of 0.022 M glycine hydrochloride
A 135.0 L weather balloon filled with 4.9 moles of helium has a small leak. If the helium leaks at a rate of exactly 10mmol/hr what is the volume of the balloon after 72 hours
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