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The dibasic compund B(pkb1=4.00),pkb2=8.00 was titrated with 1.00 M HCl. the intial solution of B was 0.100M and had a volume of 100.0mL.A) At what volumes are the two equivalence points?B) find the pH at the folowing volumes of acid added(Va) and sketch a graph of pH versus Va: 0.0,5.0,10.0,15.0,20.0 and 22.0ml
Calculate the amount of heat liberated (in kJ) from 405 g of mercury when it cools from 94.0°C to 14.0°C.
Calculate the de Broglie wavelength of a neutron moving at 1.17% of the speed of light. _____m
How many milliliters of 0.200 M NaOH will be required to titrate 19.6 mL of 0.479 M H2SO4
What is the concentration of a solution of lithium carbonate containing 0.01 mol in 750 mL of solution? Give your answer to two significant figures and include the units as mol L-1 ie 0.36 mol L-1
A gaseous mixture of O2 and Kr has a density of 1.114 g/L at 431 torr and 325 K.What is the mole percent O2 in the mixture.
We do not have a reliable method for determining the number of molar equivalents of bleach being added because commercial preparations vary in concentration and "oxidizing power
When 5.0 g of an unknown compound is dissolved in 200.0 g of carbon tetrachloride, CCl4, the freezing point of the solution is -31.8 degC. The freezing point of pure carbon tetrachloride is -22.3degC
Using Wien's law, calculate the temperature a star must have for the peak wavelength of its blackbody curve to equal this value.
Determine the number of bonding electrons and the number of nonbonding electrons in the structure of BeF_2 please Enter the number of bonding electrons followed by the number of nonbonding electrons
477 J amount Energy is added to a 74.0 grams sample of H 2 O at a temperature of 21 degree Celsius. Determine what will be the final temperature of the H 2 O?
suppose 321 grams of methylamine (CH3NH2) and 332L of oxygen gas are mixed together in the reaction below at STP. how many grams of water should be prouduced?
The heat of solution of ammonium chloride is 15.2 kJ/mol. If a 6.253 g sample of NH4Cl is added to 65.0 mL of water in a calorimeter at 26.9°C.
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