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Draw the structure of the product that is formed when 1-pentyne undergoes reaction with two equivalents of HCl.
how many ice cubes are needed to cool 500 g of water initially at 23 c to 0.0 c if each cube at 0.0 c contains one mole of water.
If a student starts with 615g of Co(NO3)2 and obtains a 57.3% yield of CoS, what mass of CoS is isolated? Co(NO3)2 +K2S ---> CoS + 2KNO3
Find the confidence limit (95% confidence level), true value (from literature), absolute error, and relative error).
Identify all of the substances that are used or produced in this experiment A5. Distinguish between elements and compounds.
Determine What would be the total volume in the graduated cylinder if density of Ag= 10.5 g/mL.?
The molality of sodium nitrate solution us 1.44m. What is mole fraction of NaNo3. The molar mass of NaNo3 is 85.06g/mol
If 10.0mL of acetic acid, CH3COOH, is diluted with water to a total volume of 200.0mL, what is the percent by volume of acetic acid in the solution.
A balloon containing 6.40 g of nitrogen, N2, has a volume of 5.00 L. What mass of hydrogen, H2, must be added to the balloon to expand its volume to 11.0 L
Standard Atmos. Pressure is 90.0 atm. What are the Partial Pressures of the Gases in mmHg?
Compare the rms speeds. Compare the average kinetic energy. -Consider equimolar samples of the same ideal gas at the same temperature, but different volumes. Sample A has a larger volume than Sample B
What is the percent by mass of NaHCO3 in a solution containing 70 g of NaHCO3 dissolved in 700 mL of H2O?
Calculate the temperature of the system once equilibrium has been reached. Assume that Cp,m for Au and H2O is constant at its value for 298K throughout the temperature range of interest.
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