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A 1.0-mL volume of .010 M H2SO3 is added to amixture of 12 drps of .01 M HIO3, 8 drops of deionized water, and 1drop of starch solution. A color change in the reaction mixture occurred in 40 seconds.
a. Assuming 25 drops per milliliter, determine the initial molar concentration of IO3- after the mixing but before anyreaction occurs (at time=0)?
A solution containing 50.0 g NaNO3 in 75.0 g of H20 at 50°C is cooled to 20°. How many grans of NaNO3 remain at 20°.
calculate the ph after 0.020 mol hcl is added to 1.00 l of each of the four solutions.a 0.100 m honh2 kb 1.1
What is the osmolarity of the following solutions. Express answer in two signint figures. 1. 0.35 M KBr 2. 0.15 M glucose +0.05 M K2SO4
1.how many significant digits can be obtained from this instrument?2. what is the appearance of the flame when the air
The Ksp for calcium sulfate is 7.1 x 10^-5. What is the concentration of Ca^2+ in equilibrium with CaSO4(s) if [SO4^2-] = 2.0 x 10^-2 M
a strip of magnesium of mass 15g is dropped into a beaker of dilutenbsp hydrochloric acid. calculate the work done in j
5Ca+ V2O5 ----> 5CaO + 2V In one process, 1.54 x 10^3 g of V2O5 react with 2.07 x 10^3 g Ca. Calculate the theoretical yield of V. Calculate the percent yield if 795 g V are obtained
A voltaic cell is constructed by immersing a strip of silver in a 1.0M AgNO3 solution and a strip of cadmiun metal in a 1.0M Cd(NO3)2 solution. The circuit is completed by a wire and a salt bridge in the usual way. What is the cell potential for t..
The only difference is the H+-ATP stoichiometry. Given that the pH on the outside of the xeno-mitochondrial membrane is 6.014,
calculate the mole fraction of ethanol ch3ch2oh molar mass 46.0 gmol in a solution that contains 46 g of ethanol and
125 mole of oxygen gas is added to carbon in a .25L container. The mixture equilibriates at 500K. Calculate the equilibrium concentration of carbon monoxide, knowing that K=.086 at 500K.
2.1g of cyclohexene is reacted with 6.0g of bromine to yield 2.0g 12-dilonemocyclohexane.can 123-tribromocyclohexane or
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