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a mixture of HCOOH and H2C2O4 is heated with conc. H2SO4 . The gas produced is collected and on treating with KOH solution the volume of the gas decreses by 1/6 th . calculate molar ratio of two acids in original mixture.
in general methylamine ch3nh2 is a stronger base than ammonia nh3 and dimethylamine ch32nh is a stronger base than
The following osmotic pressures were observed for bovine serum albumin (BSA) in 0.15 M NaCl at 273 K. Calculate the molar mass of BSA.
write a balanced equation that shows the reaction of iron with oxygen to form iron oxide which may be written fe2o3.
What is the pH of the solution after the addition of 80.0 mL of 0.0500 M NaOH(aq) to the buffer. What is the pH of the solution after the addition of 10.0 mL of 1.0 M HNO3(aq) to the initial buffer
A phosphate buffer solution contains 0.08 M K2HPO4 and 0.12 M KH2PO4. pKa values for H3PO4 are 2, 6.8, and 12.2. Compute the concentration.
Consider that there are two sources of OH-in this procedure. Also, an excess of 3 mL will need to be added to your calculated value in order to suppress the hydrolysis of Al 3+.
Calculate the amount of heat involved in the conversion of 25.00 g of water at 100 C to steam at 100C. Use Hess's law to calculate the amount of heat involved in converting 25.00 g of liquid water at 25 C to steam at 100C
If water at the boiling point is saturated with potassium hydrogen tartate, 30 mL of the solution requires 49.5 mL of 0.2 M NaOH in a titration. What is the KSP of potassium hydrogen tartate at this temperature and what is the solubility in g/L.
What mass of iron would be required to cover a football playing surface of 120 yds × 60 yds to a depth of 1.0 mm?
An aqueous solution is 33.0% by mass methylamine (CH3NH2) and has a density of 0.85 g·cm-3. a) If 48.7 mL of this solution is diluted to 1009.0 mL, what is the pH of the resulting solution
The contact angle between water and a carbon nanotube (CNT) bundle is 86.3o (J. Phys. Chem. B, 2006, 110, 15945). If the surface tension of CNTs is ~28mN/m, calculate the interfacial tension between water and CNTs.
Table salt NaCl and sugar C12H22O11 are accidentally mixed a 5.00g sample is burned and 3.00 of CO2 is produced. What is the mass percentage of the table salt in the mixture
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