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A scientist wants to make a solution of sodium phonsphate for a lab experiment. How many grams of sodium phosphate will be needed to produce 475 ml of solution that has a concentration of Na+ ions of 1.50 M?
When 36.4 g of calcium and 11.1 g of water are reacted according to the following equation: Ca(s) + 2H2O(l) → Ca(OH)2(s) + H2(g) How many liters of hydrogen gas at a pressure of 727 mm Hg and a temperture of 47.8 °C are produced?
A meteorological balloon of radius 1.0M at sea level and 20 degrees C. At it's maximum altitude the radius of the balloon is 3.0M and the temperature is -20 degrees C
Calculate the change in enthalpy, Delta H. Report your answer in Joules.
You have 100.0 mL of a solution of hydrochloric acid that has a pH of 3.00. You add 100.0 mL of water to this solution. What is the resulting pH of the solution?
Determine the molar concentration of the original acid solution and find pH and a % ionization of the acid in the original solution.
what are the rates of production of P4 and H2 in this experiment?
The surface area of 100 g of glucose > than that of 1 g. give explanation why the solubility does not increase with the amount of solid deposited at the bottom of the flask?
what is the freezing point(Degrees C) of a solution prepared by dissolving 11.3g of Ca(NO3)2 ( formula weight= 164g/mol) in 115g of water?
Which of the following would be expected to have the lowest pH?
for each formula unit of sodium decahydrate: Na2SO4 * 10H2O, a) how many atoms of each kind are present? B) how many water molecules would be liberated for every molecule of the hydrate that is decomposed by heating?
Calculating Internal Energy Change, The heat capacity of a bomb calorimeter is 87.5kJ K-1 (this value is for the total heat capacity, including that of the water jacket around the reaction chamber)
Determine after how many days will one-sixteenth of a given amount of radon-222 remain and Determine the values of Delta E and Delta H for the system?
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