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50.0 g of ice was initially at -4.0°C and 1 atm. At 1 atm, it absorbed some heat and became 20.0 g of ice and 30.0 g of liquid water in equilibrium with each other. How much heat was absorbed?
The single proton that forms the nucleus of the hydrogen atom has a radius of approximately. The hydrogen atom itself has a radius of approximately 52.9 .What fraction of the space within the atom is occupied by the nucleus
The vapor above a mixture of pentane and hexane at room temperature contains 35.5 pentane by mass. What is the mass percent composition of the solution. Pure pentane and hexane have vapor pressures of 425 and 151 , respectively, at room temperatur..
If you were to get methanol wet and it contained water, what compound would be formed and isolated along with trityl methyl ether
all ammonium compounds which contain an ammonium ion nh4 and a negative ion are thermally unstable.a. discuss two ways
A diver at a depth of 100 ft (pressure approximately 3 atm) exhales a small bubble of air with a volume equal to 100 mL. What will be the volume of the bubble (assume the same amount of air) at the surface?
calculate the pH of a solution that is prepared by mixing 75ml of 0.20 M (NH4)2SO4
What is the bond order of a PP bond? (c) What is the bond order of a P-P bond in cyclo-P4 2-? Using the SALCs generated in question 1 build a molecular orbital -bonding framework in cyclo-P4.
One can approximate boiling point at reduced pressure using a pressure-temperature nomograph. What would you expect the observed boiling pint to be at 50 torr(mm) for a liquid that has a boiling point
The pH of a solution of a weak acid is found to be 4.625. If 10.000 mL of this solution is titrated with 7.3990 mL of 0.012500 M NaoH, what is the Ka of this acid
Explain which of the subsequent elements have two unpaired electrons and consequently are paramagnetic
A solution is prepared by dissolving 0.18 moles of acetic acid and 0.18 moles of ammonium chloride in enough water to make 1.0 L of solution. Find the concentration of ammonia in the solution.
question explain and show hownbspyou would sythesise the following compounds starting with benzene or toluene and any
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