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A sample that weighs 0.1586 grams contains only sodium chloride and potassium chloride was dissolved in water. It took 22.90 mL of 0.1000 AgNO3 to precipitate all of the chloride present. What is the composition by mass percents of the 0.1586 g original sample? Also what is the formula?
Aluminum and oxygen react according to the following equation: 4 Al (s) + 3 O2 (g) → 2 Al2O3 (s) What mass of Al2O3, in grams, can be made by reacting 4.6 g Al with excess oxygen
Using a sample of 350. mL air is collected at 35 Celsius has a pressure of 550. torr. if it is allowed to expand to 425 mL at 57 Celsius then What pressure will the air exert?
Enough of a monoprotic acid is dissolved in water to produce a 0.0142 M solution. The pH of the resulting solution is 2.51. Calculate the pKa for the acid
C2H4 + 3O2 = 2CO2 + 2H2O if you start with 45 grams of ethylene (C2H4), how many grams of carbon dioxide will be produced.
determine at what pressure will pure H 2 O start to boil if its temperature is seventy five degree Celsius
how much heat is required to raise the temperature of 50.0 g of C6H6 at 6.00ºC to 93.0ºC
Should you install a solar water heater? The average home has a 200 liter hot-water tank, which is effectively drained and replenished three times per day.
Determine the molarity of a solution of sodium hydroxide (NaOH) if 27.9 mL of this solution combines exactly with 22.30 mL of 0.253 M
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.
If 2.44 moles of Helium gas has a pressure of 2.4 atm at 343 K, what volume must the gas occupy.
A calorimeter temperature increased by 0.45 0C after adding 30 joule OF ENERGY TO IT BY ELECTRICAL HEATING and the temperature increased by 7.3 0C when 0.10 grams of HCl is neutralize in the same calorimeter now determine the specific heat of neut..
Draw a diagram showing the stratification in a body of water. Label the different layers and describe the type of chemistry (and species) that occurs at each level.
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