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A twofold increase in the initial concentration of A leads to a 1.41-fold increase in the initial rate.. what is reaction order?
What mass of concentrated sulfuric acid (98.0 % H2SO4 by mass) must be used to react completely with 164.9 g of Ca3(PO4)2
What colligative properties are displayed by these situations.
Assume an organic compund has a partition coefficient between water and diethyl ether equal to 7.65. If there are initially 8.01 grams of the compound dissolved in 90.0mL of the water
Carboxylic acids have higher than expected boiling points due to dimeric associations involving hydrogen bonding. The structure of 3-methylbutyric acid is shown below. Draw a second molecule of 3-methylbutyric acid
Since phosphate ionization of 2.14, 6.86 and 12.4. you make stock buffer 500mM in 1L. You decide to make one stock pH 6.5 and the other ph 7.2 How many mmols of what type of phosphate componet do you add to each of these buffers?
what is the number of grams of C02 produced if you combust 0.50 ole of Ch4 according to the following balanced equation.
The frequency of electromagnetic radiation required to promote an electron from n=2 to n=4 in a Bohr hydrogen atom is
The nuclide Pb-210 undergoes three successive decays (beta, alpha, and beta, respectively) to form a stable nuclide. What are the three nuclides which form from Pb-210 in this decay series
Calculate the amount of heat required to raise the temperature of 72 g of H2O from 23 degrees celcius to 115 degrees celcius
calculate the expected degree of polymerizationand the molecular weight of the polymer if a) all the termination reaction occurs by combination and b) all the termination occurs by disproportionation.
The mass spectrum of an organic compound shows the relative abundances of M to be 34.83% and M 1 to be 6.027%. Assuming the peaks are caused by 12C and 13C isotopes
Calculate the wave-lenght for the following reactions: NO2 dissociating in NO and O2 and NO2 dissociating in N + 2O, given: DeltaHf: NO2
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