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A 25 mL sample of 0.200M NH3 was titrated with 0.200M HCl. Calculate the pH at each of the following points in the titration: 0.0 mL acid added; 10.0mL acid added;20.0 mL added;25.0 mL acid added;30.0 mL acid added
Kb =1.8 x10-5
Ka=3.63x10-13
what will be the heat capacity in units of jk of a constant pressure coffee-cup calorimter that contains 100.0 ml of
in a well-fed adult camel this can weigh as much as thirty five kilograms. the metabolism of this fat enables the camel
PCl5(g) PCl3(g) + Cl2(g) Kc=0.042 The consentrations of the products at equilibrium are (PCl3)= 0.150M and (Cl2)=0.200 M. What is the consentration of the reactant, PCl5 at equilibrium
A 10mL aliquot of this solution, diluted to 25mL, yielded a signal of .235 units. A second 10 mL aliquot was spiked with 10mL of 1ppm standard solution of the analyze and diluted to 25mL. The signal for the spiked sample was .502 units. What is th..
What is a significant obstacle when using osmometry to determine molar masses for compounds with very high molar masses? A. The osmotic pressures may be too high to measure.
What is the volume of the gas at STP conditions? b.) What is the molar volume of the gas?
IF the temperature remains constant but the pressure is changed, can the phase state be changed. Why or why not.
Draw the Lewis structure of the major resonance form of the thiosulfate ion, S2O3 2-. Include all lone pairs of electrons. Include formal charges on atoms with charges.
In the separation of t-butyl chloride from the reaction mixture, what is the purpose of the following washes?
despite its name, is at least mildly toxic. The properly balanced mixture reacts to form K2CO3, N2, H2O and CO2. Write the balanced reaction and determine the mass of kno3 that should be mixed with 1.4 g of sugar to produce optimally balanced rock..
Calculate the temperature of the system once equilibrium has been reached. Assume that for Cp,m H2O is constant at its values for 298K throughout the temperature range of interest.
The air track carts in the figure are sliding to the right at 1.0 meter per second. Find the speed of the carts.
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