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A flask contains 400 ml of .5 M phosphate buffer that has a ph of 7.5 What volume of .1 M HCl should be added to drop the ph to 7.1
a manufacturer of bicycles has 4819 wheels 2305 frames and 2250 handlebars. how many wheels are left over? how many
Write a mathematical equations that show how you will calculate the deteced activity from the count rate due to background radiation and the sample of KCl. also, write an equation that shows how you will determine the "true" activity of your sampl..
How many moles of sulfur trioxide are formed from 3 moles of sulfur dioxide using the given balanced equation. 2 SO2 + O2 = 2 SO3
How many moles of N2 are produced by the decomposition of 1.40 of NaN3 ?
Yet a generic figure is 1kB per particle. Assuming this figure is exact, what is the molar enthalpy of melting of Argon (in kJ/mol), whose melting temperature is 83.85K?
How many moles of hydrogen gas are produced when 0.066 mole of sodium is completely reacted?
The flask was then shaken until the solution was uniform. A 55.0-mL sample of this glucose solution was diluted to 0.500L . How many grams of glucose are in 100mL of the final solution?
The decomposition of hydrogen peroxide is a first-order process with a rate constant of 1.06 x 10-3 min- 1. How long will it take for the concentration
If you have 260.0 mL of water at 25. C and add 110.0 mL of water at 95.0 C, what is the final temperature of the mixture. Use 1.00 g/mL as the density of water.
100 ml sample of hard water is titrated with the ETDA solution in problem 2. the volume of EDTA required to reach the end point is 22.44 ml
Calculate the free energy change for transferring 1 mol of sodium ions from outside to inside of the cell at the pysiological temperature of 310 K.
What mass of Cl2 gas will occupy the same volume at 10 C as that occupied by 3.20 g of SO3 gas at 40 C if the pressure of the two gases is the same
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