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Explain what is the molarity of a Ba(OH)2 solution, 8.05mL of which neutralizes 10.00mL of 0.204M HNO3?
The following data were obtained when measuring the delta H of neutralization for the reaction of HCl with NaOH.
What would be pmm concentration of a solution of 0.000775 mol of sodium chloride in 1250 ml of solution. (Molecular weight of sodium chloride is 58.5)
A system receives 729 J of heat and delivers 4,104 J of work to its surroundings. What is the change in internal energy of the system (in J)
A solution is made by dissolving 0.45 moles of LiCl to make 150 mL of aqueous solution. What is the molarity of the solution?
Which of these ions best represents the conjugate acid in a "phosphate" buffer at physiological pH? Explain. H2PO4^-, HPO4^2-, PO4^3-
A 100.0 g sample of water at 90.°C is added to a 500.0 g sample of water at 10.°C. Calculate the final temperature of the water.
a compound called pyrene has the empirical formula c8h5 . when 4.04 g of pyrene is dissolved in 10.00 g of benzene the
what is the mass in grams of a single atom of Ru. The answer is supposed to be in scientific notation as in blank time ten^ blank. I kinda have an idea but not sure
a gold bar weighing 33.5g and having an initial temperature of 25.0 degrees celsius absorbs 5000 joules of heat. what
Calculate the freezing-point depression and osmotic pressure at 25°C of an aqueous solution containing 8.6 g/L of a protein (molar mass = 9.0 104 g/mol) if the density of the solution is 1.0 g/cm3.
identify the oxidizing agent in the reaction mg2hclh2mgcl2 the generation of hydrogen gas in the
Why is a diffraction pattern generated by an electron beam formed by electrons interfering with themselves rather than with one another
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