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What is the heat change in J associated with 37 g of gaseous methanol at 89 oC changing to liquid at -64 oC?
Copper metal is purified by electrolysis. How much copper metal could be produced from copper(II) oxide by applying a current of 10.0 amps
A sample of MgCl2 is known to be contaminated with NaCl. A 3.47-g portion of the sample is dissolved in water and treated with an excess of AgNO3 solution.
The molality of the solution is determined to be .0480m. What is the molar mass of the substance?
Calculate the nuclear binding energy of one lithium-6 atom. The measured atomic mass of lithium-6 atom. The measured atomic mass of lithium-6 is 6.015 amu.
Deficiency of phosphoglyceromutase d) mutation that interferes with the formation of quarternary structure in hemoglobin
Suppose you started with 2.6 M of HCN(aq), what would be the molar concentration of HCN(aq) at 20 days?
how many milliliters of 5M MgCl2 must be added to 25ml of 0.5M MgCl2 to produce 1500mL with a final MgCl2 concentration of 1.75M?
The structure of HxWO3 could contain H+ ions or OH- ions. Which do you think is more likely? Why?
You have given some aqueous solutions as a. LiClO4 b. HClO c. CH2CH3OH d. HClO4 e. HNO3 you just need to Classify each of the given aqueous solutions as a weak electrolyte, non electrolyte, or strong electrolyte ?
comment on the situation in this case. is the positive charge of hydronium ion on the least electronegativity atom? is this reasonable? is there a choice?
Calculate the ratio of rates of effusion of O2 versus Cl2. Record your answers to three significant figures. The concentration of CO2 in the atmosphere is 375ppm (by volume). What is the mole fraction of CO2 in the atmosphere?
The initial step in the accepted mechanism for the benzilic acid rearrangement involves attack of hydroxide ion at a carbonyl carbon in a benzil molecule
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