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Calculate final pH resulting from the addition of 5.0 mmol of strong acid to the buffer solution made from 0.150 L of 0.50 M NH4Cl and 0.100 L of 0.25 M NaOH. pKa(NH4+)=9.25.
Calculate the work done on a 2500. kg car in accelerating it from rest to a speed of 100. km/hr.
For the reaction 2CH2O(g) + O2(g) ? 2HCOOH(l), if 4.19 × 1022 molecules of formaldehyde (CH2O) react with excess oxygen, what is the theoretical yield of formic acid (HCOOH)
Explain what happens when the following chemicals are mixed in water as well as how do you write a balanced chemical equation for each to show what state each substance is in? Would a reaction occur
Find the change in entropy (S) for the system, surroundings and universe for the conversion of 1 mol of ice at 0 degrees C and 1.00 atm to 1.0 mol of steam (vapor) at 100 degrees C and 0.50 bar
1/ A tunable dye laser emits pulses of light at 566.0 nm, each having a total energy of 7E-6 J. Calculate the number of photons in each pulse.
You have a 22 g sample of ethanol with a density of 0.7893 g/mL. What volume of ethanol do you have. What mass of lead (density 11.4 g/cm3) would have an identical volume to 14.1 g of mercury (density 13.6 g/cm3).
20.00 ml of 0.100F Pb(No3)2 (FW 331.2) are mixed with 15.00 ml of 0.125 F Nal (FW 149.9). Lead (II) and iodide form an insoluble salt pbl2 (FW 461.0) Calculate the concentration of each of the remaining ions after mixing. [Pb+2], [i-],[na+],[n03-]..
What would the consequence of a "mistake" be?
What is the final pH if .2 mol HCL is added to .5L of a buffer solution formulated using .28 M NH3 and .22 M NH4CL?
how would you distinguish between methyl benzoate and phenylacetic acid using 1h nmr
Ferrocene cannot be nitrated using the conventional HNO3-H2SO4 mixed acid conditions, even though nitration is an electrophilic
You are asked to determine the strength of an acid by titration with NaOH. Exactly 50.0 ml of the acid are titrated with 0.300M NaOH and the equivalence point is reached at exactly 20.0 ml of NaOH. What is the molar strength of the acid
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