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A student used a volumetric pipet to measure the volume of the vinegar sample. The vinegar sample was titrated with NaOH and the acetic acid concentration was determined to be 4.20 %mass. For the second titration, the student used a graduated cylinder to measure the vinegar sample. The student calculated the concentration to be 4.30% mass. In which experiment should the student be more confident of the concentration of the acetic acid? Why?
the critical constants of ethane are pc 48.20 atm vc 148 cm3mol and tc 305.4 k. calculate the van der waals
An engineer is designing a reactor that will be filled with oxygen under high pressure. The volume of the reactor is 253 L, the maximum temperature inside the reactor will be 250ºC, and the pressure inside the reactor must not exceed 150 atm. The eng..
Each of the following reactions is allowed to come to equilibrium and then the volume is changed as indicated. Predict the effect (shift right, shift left, or no effect) of the indicated volume change.
Calculate the pH and percent ionization of a 0.10 M solution of CH3NH2
what would the major product be of the reaction of 1 mole of 34-dibromoheptane with 1 mole of koh in ethylene glycol?
The ion-accelerating voltage in a particular quadrupole mass spectrometer is 5.00 V. How long will it take a singly charged cyclohexane ion to travel the 15.0 cm length of the rod
A 2.00 g sample of silver (Ag) was heated with excess sulfur (S) to produce 2.30 g of a "silver sulfide". Calculate the empirical formula of this sulfide, AgxSy, where x and y are the smallest whole-number moles of Ag and S, respectively. (remembe..
explain why some molecules are best represendted by resonance structures and how these structures indicate the actual
Explain in detail why the sugar would cause the ice cubes to melt while it causes the temperature to drop. Is this related to freezing point depression? please explain.
Problem- The toxic gas phosgene decomposes to a limited extent to carbon monoxide and chlorine at 373 K according to the following equation: COCl2(g) ----> CO(g) + Cl2(g) The equilibrium constant, Kc, is 2.2 x 10-9 at this temperature. If a 1.00 L..
Sulfuric acid reacts with sodium chloride to form aqueous sodium sulfate as well as hydrogen chloride gas. Explain how many mL of gas form at STP when 0.117 kg of sodium chloride reacts with excess sulfuric acid
For the equation, add phase labels (s,l,g) then write the total balanced ionic equation. Circle every spectator ion in the total ionic equation. Write the final balanced net ionic equation
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