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TESTS ON CARBOHYDRATES
1. Define the following and give a brief explanation of each one of them; Carbohydrates, Monosaccharides, Oligosaccharides and Polysaccharides.
2. There are two main classes of monosaccharides,i,e aldoses and ketoses. Briefly distinguish between these two classes.
3. Draw the chemical structure of glucose and fructose .State which one is an example of aldoses and ketones.
Calculate the solubility in g/L of MgCO3 in the following solutions. (a) pure water (b) 0.0010 M Na2CO3 (Use the quadratic equation.) Calculate the molar solubility of AgBr in a 3.0 M NH3 solution.
Atomic absorption spectrometry was used with the method of standard additions to determine the concentration of cadmium in a sample of an industrial waste stream
a chemist is commissioned to produce 50000 liters of 0.550 m aqueous phosphoric acid. the chemist can purchase solid
a) if you make up a solution of 50mL of 0.1M TRIS in the acid form, what will be the pH. b) If you add 2mL of 1M NaOH to the solution, what will be the pH
magnesium hydroxide is 54.87% oxygen by mass. How many grams of oxygen are in 175g of the compound ?
If the container is compressed to 2.40 \rm L and the temperature is increased to 36\, \rm ^{\circ}C, what is the new pressure, P_2, inside the container
Consider the reaction shown below. PbCO3(s) PbO(s) + CO2(g) Calculate the equilibrium pressure of CO2 in the system at the following temperatures.
Calculate the mass of propylene glycol that must be added to 0.500 kg of water to reduce the vapor pressure by 4.60 torr at 40 degrees celcius.
How much sulfur and how much sulfuric acid (in Kg) can be produced from the SO2 according to part (a) of this question - what is the average number of particles/cc?? Assume a density of 0.98 g/ cm3 for the particles.
How many mols of nitric acid would be in 1375 ml of the acid solution at a pH of 3.75. What would be the [H+] and [OH-] of a solution at pH=10.50
The exothermic chemical reaction CO(g) + H2O(g) CO2(g) + H2(g) has Kc = 0.034 at 25°C. We currently have a flask containing all the components listed in this equation at equilibrium at 25°C. Subsequently, we will either (1) add some H2 to the flas..
If a sample of Al2(SO4)3 is found to contain 863 mol of Al3+ ions how many moles of Al2(SO4)3 formula units are present?
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