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A 2.50-L sample of a colorless gas at STP decomposed to give 2.50 L of N2 and 1.25 L of O2 at STP. What is the colorless gas?
consider a glass of 150 ml of water at 30degc. calculate the mass of ice at -15degc that must be added to cool the
a student gently drops an object weighing 15.8 g into an open vessel that is full of ethanol so that a volume of
When 1.661 g of this compound (molar mass = 155.32 g/mol) was burned in a bomb calorimeter, the temperature of the calorimeter (including its contents) rose by 4.193°C. What is the heat capacity (calorimeter constant) of the calorimeter
How low would the blood glucose concentration have to fall to decrease the rate of glucose phosphorylation in the erythrocyte to 90% of Vmax
The shorthand notation for the galvanic cell reaction Fe3+(aq) + 2 I-(aq) ? Fe2+(aq) + I2(s) requires an inert electrode on A) only on the right side of the salt bridge
radioactive gold-198 is used in the diagnosis of liver problems. the half life of this isotope is 2.7 days. if you
what are the reactants in the equationk2cro4aq pbno32aq -gt kno3aq pbcro4aq?what are the proper coefficients to balance
Sketch the plot of electrical conductivity anainst titre volume(A VS V) you would expect to observe when the strong acid HCl is titrated with the strong base NaOH. Explain the shape of the plot and clearly indicated the end point
The temperature inside my refrigerator is about 40 Celsius. If I place a balloon in my fridge that initially has a temperature of 220 C and a volume of 0.5 liters
Estimate the enthalpy change for the combustion of one mole of ethanol (C2H5OH) using average bond dissociation enthalpies (in KJ/mol) for C-H: 413, O-?H: 463, C-O: 358, C-C: 154, C=O: 122, and O=O: 498.
What is the definition and units for atomic mass. What is the difference between molecular mass and nominal mass. Which one do we usually use
Alpha helices are a type of secondary structure in proteins. what is the length of a 53-kDa single-stranded alpha-helical protein segment?
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