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H2CO3 and HCO3- are used to create a buffer solution.
When an acid is introduced into this buffer, which of H2CO3 and HCO3- reacts with the acid to maintain the pH of the solution?
Potassium nitrate has a lattice energy of -163.8 kcal/mol and a heat of hydration of -155.5 kcal/mol. How much potassium nitrate has to dissolve in water to absorb 103kJ of heat?
Problem- Q1) A gas occupies one litre under atmospheric pressure. What will be the volume of the same amount of gas under 750 mm of Hg at the same temperature
A mixture of table salt and ice is used to chill the contents of hand-operated ice-cream makers. What is the melting point of mixture of 2.00 lb of NaCl and 12.00 lbs of ice if exactly half of the ice melts?
The balloon is designed to continue its ascent to an altitude of 30.0 km, where it bursts, releasing a package of meteorological instruments that parachute back
How many grams of Cu metal (63.55 g/mol) will be plated out of a Cu(NO3)2 solution by passing a current of 3.00 amperes for 11 minutes?
what mass of k2co3 is required to clean up a spill of 489 ml of 3.50 m hcl if hclaq reacts with k2co3 according
A 49 lb child is suuposed to receive 93 units/kg of heparin sodium by IV infusion every 4 hours. How many units will the child receive over the course of one day (round to the nearest unit).
If a sample of H2O containing 2.00 moles is initially at 30.0C. If the sample absorbs 2.00 kJ of heat, define what is the final temperature of the H2O. The specific heat of H2O is 4.184.
What is the pH of a 0.200M ammonium Percholate solution, NH4ClO4 The ionization constant of ammonia is 1.8x10^-5
The heat capacity of a bomb calorimeter is found to be 5.65 kJ/c. when a 2.92 g sample of glucose(C6H12O6,MM180.16) is burned in the calorimeter, the final temperature 33.8 C. what is the quantity of heat (in kJ) release or absorb by the reaction if ..
Give the repeating unit of the polymers prepared by ADMET polymerization
To make strawberry jam, crushed strawberries and sugar are mixed in a 45:55 mass ratio, and the mixture is heated to evaporate water until the residue contains one-third water by mass. Calculate how many pounds of strawberries are needed to make a..
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