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The molar mass of compound is measured to be 33.4, 35.2, 34.1, 33.9 g/mol in four trials. What is the avg molar mass & calculate standard deviation and %RSD for determination of the molar mass
Determine [Zn2+] [CN-] [HCN] in a saturated solution of Zn(CN)2 with a fixed pH of 2.390. The Ksp for Zn(CN)2 is 3.0x10^-16. The Ka for HCN is 6.2x10^-10.
The specific heat of a certain type of metal is 0.128 J/(g x C). What is the final temperature is 305 J of heat is added to 63.8 g of this metal initially at 20.0 C
What causes cycloalkanes to have two less hydrogen atoms than similar alkanes that are open chain ones?
at 580 nm, the wavelength of its maximum absorption, the complex Fe(SCN)2+ has a molar absorptivity of 7.00 x 10^3 L mol -1cm1-. Calculate
Give two reasons why anhydrous conditions must be maintained during a Grignard synthesis. Write chemical reactions to explain
Does the equilibrium constant increase or decrease as the tempearture increases or decreases
how to break glass bottles where you soak yarn in acetone, tie it around the bottle, light it on fire for 20-30 seconds then submerge it in water and the glass seperates.
When one mole of C6H6 is burned, 3.27 MJ of heat is produced. When the heat from burning 6.65g of C6H6 is added to 5.69 kg of water at 21C, what is the final temperature of the water.
Using a solution containing 0.302 grams of an antibiotic has an osmotic pressure of 8.34 mmHg At 23.6°C, 0.500 L. calculate its molecular mass.
A and B are stereoisomers. They are nonsuperimposable and are mirror images of one another. Which of the following best describes the relationship between A and B
Neglecting any effects caused by volume changes, would you expect the ionic strength to increase, decrease, or stay the same by the addition of NaOH to a dilute solution of
The average bond enthalpy for a double bond is 614 and that of a single bond is 348 . Estimate the energy needed to break only the bond of the double bond of 2-butene. Express your answer numerically in joules per molecule.
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