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What volumes of .200 M HCOOH and 2.00 M NaOH would make 300 mL of a buffer with the pH of one made from 475 mL of .200 M benzoic acid and 25 mL of 2.00 M NaOH?
copperii chloride and leadii nitrate react in aqueous solutions by double replacement. write the balanced chemical
What is the number of chlorine atoms are in 5.0 g chloral hydrate?
Write a balanced net ionic equation for the reaction of each of the following aqueous solutions with H+ ions.
A 125 lb patient is to receive a drug at a rate of 0.300 mg per 1.00 kg of body weight. If the drug is supplied as a solution containing 5.00 mg/mL, how many milliliters of drug solution should the patient receive
The rate constants of some reactions double with every 10 degree rise in temperature. Assume that a reaction takes place at 315 K and 325 K. What must the activation energy be for the rate constant to double as described
heptapeptide upon HCL hydrolysis produced equimolar amounts of ASP, CYS, GLU, LYS, PHE, TYR, VAL and ammonia. Exposure of the intact heptapeptide to FDNB followed by hydrolysis produced DNP-VAL
The solubility of the ionic compound M2X3, having a molar mass of 205 g/mol, is 3.16 10-7 g/L. Calculate the Ksp of the compound.
2.51 moles of a gas occupies 50.88 liters, and its density is 1.43 g/L at a particular temperature and pressure. Calculate the molar mass of the gas.
macroscopic model describing what happens when solutions of salt (NaCl) and sugar (c12h22011) are prepared to measure their conductivity. Describe what you would observe before and after you added salt and sugar to water
a) What must be the velocity of electrons if their associated wavelength is to equal the longest wavelength line in the Lyman series
What volume (in mL) of water must be added to a 1.96 M solution of potassium hydroxide to make a 50.8 mL of a 0.625 M solution? Assume the volumes are additive.
What is the concentration of CH3COOH (Ka = 1.8x10-5) in 50.0 mL of a 0.0187 M CH3COOH solution
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