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Adrenaline is the hormone that triggers release of extra glucose molecules in times of emergency or stress. A solution of .64g of adrenaline in 36g of CCl4 causes an elevation of .49 degrees C in th
Calculate the value of deta S when 1.80 mol CH3OH (l) of is vaporized at 64.7 C. The normal boiling point of methanol is 64.7 C, and its molar enthalpy of vaporization is delta H = 71.8 KJ/mol.
Write the formula of the complex ion formed between a.) the ligand, CL-, and the copper (II) ion with a coordination number of four. b.) the ligand, NH3, and the nickel (II) ion with a coordination
A gas has a pressure of 5.51981 atm when its volume is 3.16 L. What will the pressure be when the volume is changed to 1.07294 L, assuming constant temperature? Express the final pressure in torr.
Which of the following is a property of an ionic compound?
Sodium carbonate reacts with hydrochloric acid as shown below in an unbalanced chemical equation. What mass of CO2 is produced from the reaction of 2.94g Na2CO3 with excess HCL? Na2CO3(s) +HCL(aq)--
The balloon is released and reaches an altitude of 6.5 km. where pressure is 0.5 atm. assuming that the temp has remained the same, what volume does the gas occupy at this heights?
What is the molarity of the acetic acid solution if 45.0L of 17M acetic acid is diluted to 1.5L
At a pressure of 1.00 atm and a temperature of 20ºC, 1.72 g CO2 will dissolve in 1 L of water. How much CO2 will dissolve if the pressure is raised to 1.35 atm and the temperature stays the sam
A 80.0 mL volume of 0.25 M~ rm HBr is titrated with 0.50 M~ rm KOH. Calculate the rm pH after addition of 40.0 mL of rm KOH.
Before spectroscopy was invented, Korner's absolute method was used to determine whether a disubstituted benzene derivative was the ortho, meta, or para isomer.
What mass of water could be heated by burning 1g of paraffin (wax) from 0 degrees celcious to 37 degrees celious when teh heat of combustion of paraffin is 10.0kcal per gram.
a trapeze artist swings from a rope 4.15 m long in a simple harmonic motion with a period of 4.1 s calculate the value of gravity experienced by the trapeze.
Which reaction has the greatest increase in entropy
A melting point determination of Vanillin, melting point 80 C, was made with a heating apparatus setting at the maximum heating output. What is wrong with this setting and what will be the effect o
when 92.0 grams of nonionic compound were dissolved in 985 grams of water, the freezing point of the solution was found to be -4.05 degrees celsius. what is the molar mass of this nonionic compound
A gas cylinder containing 6.38 mol of neon has pressure of 491mmHg at 295k. If 3.22mol helieum is added at constant temp and pressure, what will be the pressure in the cylinder.
How many liters of softened water, containing a sodium concentration of 5.8×10^-2% sodium by mass, have to be consumed to exceed the FDA recommendation (less than 2.4 g sodium per day)? (Assum
Determine the cell potential for the galvanic cell described below. Pt(s) | BrO4- (10.6 mM), BrO4- (4.9 mM), pH 6.17 ¦ NO3- (12.6 mM), pH 3.2 | NO3(g) (102 mbar) | Pt(s)
Chlorine has an average atomic mass of 35.453 amu. The main isotopes of chlorine are 35Cl which has an atomic mass of 34.968 amu and 37Cl, which has an atomic mass of 36.956amu. Given this, what is
What is the pH of a solution prepared by mixing 50.00 mL of 0.10 M methylamine, CH3NH2, with 20.00 mL of 0.10 M methylammonium chloride, CH3NH3Cl?
22.4 liters of a gas weighs 70g at S.T.P. Calculate the weight of the gas if it occupies a volume of 20 liters at 27C and 700mm Hg of pressure.
Find the differential equation of a family of circles with center on the line y=-x and passing through the origin
C2H4+2O2= 2CO+2H2O if 2.70 mol C2H4 is reacted with 6.30 mol O2. Identify the limiting reagent
After dropping off supplies it flies to Lake B, which is 220 km at 30.0° west of north from Lake A. Graphically determine the distance and direction from Lake B to the base camp.