Inorganic Chemistry Answers

presence of phenopthilein indicator 25 ml (Na2CO3+NaHCO3) mixture solution HCL bureet reading 12.8ml and his dimention 1.04(N/10).then calculate dimention of Na2CO3 per liter

Six litres of 0.4M 3-(N-morpholino) propane sulfonic acid (MOPS) buffer of pH 7.8 are required. Available in the laboratory are 10M HCl and 10M NaOH and the zwitterionic form of MOPS (M.Wt = 210.3). The pKa for the MOPS zwitter ion is 7.2. Describe, showing the relevant calculations, the procedure for preparing the buffer . If 10ml of 10M HCl was added to 1 litre of the above buffer (question 9) what would be the resulting pH?
What would be the resulting pH if 10ml of 10M HCl were added to 1 litre of pure water?

Six litres of 0.4M 3-(N-morpholino) propane sulfonic acid (MOPS) buffer of pH 7.8 are required. Available in the laboratory are 10M HCl and 10M NaOH and the zwitterionic form of MOPS (M.Wt = 210.3). The pKa for the MOPS zwitter ion is 7.2. Describe, showing the relevant calculations, the procedure for preparing the buffer . If 10ml of 10M HCl was added to 1 litre of the above buffer (question 9) what would be the resulting pH?
What would be the resulting pH if 10ml of 10M HCl were added to 1 litre of pure water?

Six litres of 0.4M 3-(N-morpholino) propane sulfonic acid (MOPS) buffer of pH 7.8 are required. Available in the laboratory are 10M HCl and 10M NaOH and the zwitterionic form of MOPS (M.Wt = 210.3). The pKa for the MOPS zwitter ion is 7.2. Describe, showing the relevant calculations, the procedure for preparing the buffer

A small bar of an unknown metal was left on the bench. The density of the metal is 11.5 g/cm3. An X-ray diffraction experiment was conducted to measures the edge of the face-centered cubic unit cell as 4.06 x 10-10 m. Find the atomic weight of this metal and tentatively identify this metal.

The atomic planes in a graphite crystal are separated by 335 pm. At what angle would you find the first-order (n = 1) diffraction of 0.154 nm X-rays from a graphite crystal? Shows the calculation steps.

10.0 of unknown metal was completely reacted with chlorine gas to yield(1.81x10^1) grams of the metal chloride. According to the law of conservation of mass, how many milliliters of chlorine reacted? Density of chlorine is 3.214g/L.

Differentiate evaporation, distillation, filtration, decantation and crystalization from each other

15cm3 of a gaseous hydrocarbon was mixed with 120cm3 of oxygen which was in excess. The mixture was exploded, and after cooling, the residual volume was 105cm3. On adding conc. KOH, the volume reduced to 75cm3. What's the molecular formular of the HC?