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Mass of crucible plus cover (g)- 22.36g
Mass of crucible, cover and Sn (g)- 24.67g
Mass of crucible, cover and tin oxide (g)- 24.98g
a) Calculate the mass of Sn in the tin oxide.
b) Calculate the mass of O in the tin oxide.
c) Calculate the number of moles of Sn in the tin oxide.
d) Calculate the number of mo...
A 3.30-g sample of an enzyme is used to make a 4.00-mL solution. What is the molar mass of the enzyme if the osmotic pressure of the solution at 298K is 0.129 atm
Determine the concentration of a solution prepared by diluting 25.0 milliliters of a 12 molar HCl solution with H2O until the final volume is 2.50 x 10² milliliters.
110 mL of H_2O is initially at room temperature (22.0 degrees C). A chilled steel rod at 2.0 degrees C is placed in the water. If the final temperature of the system is 21.0 degrees C.
A helium-filled weather balloon has a volume of 2.4 × 102 L at 99 kPa pressure and a temperature of 0°C. What is the mass of the helium in the balloon?
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Why is the difference in names between HCN,hydrogen cyanide and KH,potassium hydride
Determine the boiling point of a solution that contains 78.8g of napthalene c10h8 molar mass 128.16 g/mol dissolve in 722 mL of benzene (d = 0.877 g/mol. pure benzene has a boiling point of 80.1*C and a boiling point elevation constant of 2.53*C/m
Calculate the pH at the equivalence point for the titration of 0.210M methylamine(CH3NH2) with 0.210M HCl. The Kb of methylamine is 5.0*10^-4
the equation a abc becomes nonlinear at high concentrations of the absorbing substance. suppose you prepare a solution
How much dry solute would you take to prepare each of the following solutions from the dry solute and the solvent?
Write the correct equation for the principal B/L acid/base equilibrium reaction in 0.1 M (H4N)2So4.
Write balanced chemical equations for each of the following verbal descriptions. (Use the lowest possible coefficients. Include states-of-matter under SATP conditions in your answer.
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