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A student measures 12.5 mL of oil and drops a rock into the oil. The oil level rises to 18.7 mL. The rock is found to have a mass of 16.27 grams. What is the density of the rock?
Complete the following neutralization reaction, and identify the strong acid, strong base, weak acid and/or weak base.
Antimony pentafluoride (SbF5) is a member of a class of molecules called super acids. What is the predicted structure of the molecule
What is theoretical yield of hydrogen? express your answer in millimoles.
when x rays of wavelength 0.084 nm are diffracted by a metallic crystal the angle of first-order diffraction n 1 is
What is the binding energy of an electron in a photosensitive metal (in kJ/mol) if the longest wavelength of light that can eject electrons from the metal is 238 nm? [Data: c = 3.00 x 108 m/s; h = 6.63 x 10-34 Js ]
what are the technique that we encounter in the experiment of preparation of standard solutions and standardization of
A protein engineering laboratory studying monoclonal antibody protein characterized the thermal stability of these proteins by measuring their melting temperature (Tm), which is specific as the temperature at which the proteins are half unfolded
What is the deltaH in kJ/mol of CaCl2 dissolved
Predict the immediate effect of the following changes on the observed cell voltage E.Increased E,Decreased E,No change E.
Find delta heat formation of butane. C4H10 + 13/2 O2 ---> 4 CO2 + 5 H2O. Delta H comb= -2881.9 Delta Heat formation of CO2 = -393.5kJ/mol Delta Heat formation of H2O = -241.8kJ/mol What is the kJ
Calculate the mass percent of a NaCl solution in which 110 g of NaCl is dissolved in 2.41 L of water at 25 0C (density = 0.997 rm g/mL).
Question- Calculate the pH of 0.480L of a 0.185M NH4Cl - 0.185MNH3 buffer before and after the addition of the following substances. Assume that the volume remains constant. Part 1- Calculate the initial pH.
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