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Question is what is difference between relative atomic mass and atomic mass unit.
The solubility of compound A in ethanol is 0.80g per 100.0mL at 0oC and 5.00g per 100.0mL at 78oC. What is the minimum amount of ethanol needed to recrystallize a 12.00g sample of compound A.
Consider the following grayscale electrostatic potential map. the region are labeled as to color. which atom is the most likely to be attacked by a nucleophile choose from the answers provided. (a) 1 (b) 2 (c) 3 (d) 4
What percentage of the Sr-90 that was formed in the detonation of the first fission bombs in August 1945 is still present in the environment in August 2094
Problem- A weak acid (HA) has a pKa of 4.919. If a solution of this acid has a pH of 4.762, what percentage of the acid is not ionized. Assume all H in solution came from the ionization of HA.
A solid sphere of a metal with a mass of 0.7371kg has a diameter of 50.0mm. Calculate the density of metal. Calculate the moles of FeSO4 present in an iron tablet containing 400mg FeSO4.
Suppose you carried out the decomposition reaction using 25.0 mL reaction solution (i.e. 15.0 mL of a 6.0% hydrogen peroxide and 10.0 mL of there reactants or solvent) and obtained the following results. What would be the concentration of oxygen if..
14.0 moles of gas are in a 8.00 Liter tank at 21.0 Celcius. Calculate the difference in pressure between methane and an ideal gas under these conditions. The van der Waals constants for methane are a= 2.300L^2 x atm/mol^2 and b=.0430 L/mol.
Problem- What phase transition is occurring when a black deposit of tungsten metal collects on the inside of a lightbulb whose filament is tungsten metal.
What are the advantages and disadvantages of writing a chemical equation with chemical symbols and formulas instead of just words?
Calculate the resulting pH if 365 mL of 2.88 M HNO3 is mixed with 335 mL of 1.10 M Ca(OH)2 solution.
Suppose the maxium pressure the vessel can safely with stand id 1.60 atm. what is the maxium temperature in K the gas can have before its pressue might burst the vessel
When NEM is added to a solution of creatine kinase, Cys 278 is alkylated, but no other Cys residues in the protein are modified. What can you infer about the role of the Cys 278 residue based on this information
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