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A fixed quantity of gas at 23 celcius exhibits a pressure of 735 torr and a volume of 5.22 L. use boyle's law to calculate the volume the gas will occupy if the pressure is increased to 1.88 atm while the temperature is constant
Silver consists of two major isotopes with the following percent abundances and atomic masses: 107Ag (51.84% and 106.90509 amu) and 109Ag (48.16% and 108.90476 amu). Calculate the average atomic mass of silver to five significant digits.
What is the pH of a 0.440 ammonia solution? with the kb value of 1.8*10^-5 What is the percent ionization of ammonia at this concentration. Express the percentage numerically to three significant figures
You dilute it with 25mL of water and 10mL of H2SO4. You titrate the solution with 19.80 mL of KMnO4. The (MnO4)- is reduced to (Mn) 2+ by the unknown solution. a) What is the equivalent weight of (MnO4)- for the experiment
a 10 ml sample of an unknown aqueous nickel 2 solution was treated and found to produce 0.0532g of nidmg2 precipitate.
A 0.440 g sample of butyric acid (an organic acid consisting of C, H, and O atoms) is combusted in excess oxygen, yielding 0.882 g CO2 and 0.360 g H2O.
A professional emergency responder should be concerned about the following routes of radiation exposure for a person on scene and a person downtown?
A mass of 0.0600 g of magnesium metal is completely reacted with excess hydrochloric acid. Write the balanced equation to answer the question. What volume of the gas at STP would be produced
When a mixture of 10.0 g of C2H2 and 10.0 g of O2 is ignited, the resultant combustion reacion produces CO2 and H2O. How many grams of C2H2, O2, CO2
Consider two samples of liquid: one mole of water H2O and one mole of ethanol C2H5OH. The density of water is 1.0 g/mL, and the density of ethanol is 0.785 g/mL. Answer each of the following questions by selecting the correct choice.
Calculate the pH of a solution made by adding 16.0 g of sodium formate
the average number of collisions suffered by a single molecule of nitrogen in a second. (b) the total collision frequency Zbb in 1 / (cm^3 s).
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?
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