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A current of 0.600 A is passed through a cell for 5min and 30 s. How much charge (in C) was trasferred? How many electrons were transfered
The half-life of Chromium-51 is 28 days. Starting with an original sample size of 12.0 ?g, calculate the number of days it will take for the radioactive isotope
Draw resonance contributors for the following: indicate major and minor contributors to hybrid
A 184-mg sample of Na2CO3 is dissolved in H2O to give 3.00L of solution. What is the concentration of Na+ in parts per million (ppm)?
describe how these limestone objects are corroded by the sulfuric acid in polluted air. What chemical reaction is involved here?
A 155 mL sample of rainwater is titrated using 0.0095 M NaOH solution. If 4.8 mL of the NaOH solution was required to reach the endpoint, what was the pH of the rainwater?
How many grams of NaCl are contained in 350. mL of a 0.103 M solution of sodium chloride?
a 25.0g sample of calcium chloride is dissolved in water to give 6.52 * x10^2 ml of solution. What is the concentration of the resulting solution in calcium, and what is the total ion concentration
Identify all the possible macrostate and the corresponding microstates in a system consisting of two communicating containers and four atoms
The endpoint of a titration is not exactly the same as an equivalence point. Why does the titration still work to use the endpoint
If you are given a 0.31 g piece of sodium metal to react with water, how many moles of HCl would it take to neutralize the sodium hydroxide produced
suppose 45.0 g of water at 85 degree celcius is added to 105.0 g of ice at 0 degree celcius. The molar heat of fusion of water is 6.01 kJ mol-1, and the specific heat of water is 4.18 J/g degree celcius.
Calculate the heat energy released when 10.9 g of liquid mercury at 25.00 °C is converted to solid mercury at its melting point.
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