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An unknown mass of each of the following substances, initially at 22.0^circ C, absorbs 1950 J of heat. The final temperature is recorded as indicated. Find the mass of each substance. a. Pyrex glass (T_f=55.1^circ C. B.sand (T_f=62.3^circ C). C.ethanol (T_f=44.1^circ C). D.water (T_f=32.4^circ C)
AIDS drugs such as Indavir and Amprenavir act by 1. inhibiting an enzyme that catalyzes the cleavage of a peptide bond between the gag and pol fragments in the gag-pol protein.2 2.catalyzing the cleavage of a peptide bond between the gag and pol ..
A gas cylinder at a pressure of 5.80 atm contains both helium and oxygen. The helium is at a pressure of 2.35 atm. What is partial pressure of oxygen?
Derive an expression for the subsequent concentration of sodium chloride c in terms of c0, t, Q, and V. Make a sketch of c versus t and label the main features.
What maximum length of aluminum foil can be made from 1.10 kg of aluminum?
Calculate the molarity of sodium ions in a solution made by diluting 50.0 mL of 0.874 M sodium sulfide solution to a total volume of 250.0 mL
A titanium bicycle frame contains the same amount of titanium as a titanium cube measuring 6.6cm on a side. 1) Use the density of titanium to calculate the mass in kilograms of titanium in the frame.
Zinc sulfide reacts with nitric acid to give zinc sulfate and nitric oxide. Calculate the mass of zinc required to react with 110 mL of 0.15 M nitric acid.
If 150 g of carbon reacts with 250 g Cl2 with an 85% yield, what is the mass of CCl4 produced
What is the maximum amount of O2 in grams that can be obtained from 2.00 x 102 g of nitroglycerin?
Draw the skeletal structure of the indicated species. LDA is added to a solution containing phenyl propanoate. After this reaction has gone to completion, 3-pentanone is added.
nitrogen gas was collected over water at a temperature of 40 degrees C, and the pressure of the sample was measured at .796 mmHg. if the vapor pressure of water at 40 degrees C is 55 mmHg, what is the partial pressure of the nitrogen gas?
How many grams of magnesium chloride are needed to react completely with 66.0 mL of 0.189 M NaOH solution
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