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How many moles of water are mixed with 1 mole of KAl(SO4)2 if 2.16 g of water are lost when 4.74g of the mixture are there to begin with?
A gas sample containing 0.3525 moles of a compound is trapped in a 2.641 liter vessel on a manifold at a temperature of 28.4 oC. What is the pressure in the vessel,
How much heat is required to warm 223 g of ice from -44.3°C to 0.0°C, melt the ice, warm the water from 0.0°C to 100.0°C, boil the water, and heat the steam to 173.0°C?
Sodium peroxide (Na2O2) reacts with water to form sodium hydroxide and oxygen gas. Write a balanced equation for the reaction and determine how much oxygen in grams
What is the recommended daily allowance (RDA) of calcium, in mg, assuming a 2000 calorie diet for a 25 year old adult? A student carries out part 1 of this experiment and finds the equation for his/her calibration curve to be
Calculate the delta H and delta S if the temperature of 1.75 moles of Hg(l) is increased from 0.00C to 75.0C at 1 bar. Over this temperatur range, Cp,m(J K^-1 mol^-1)=30.093-4.944 x 10^-3T/K.
How fast must a 143.5 baseball travel in order to have a de broglie wavelength that is equal to that of an xray photon with landa = 79.0 pm
3.06 grams of hydrogen is allowed to react with an excess of o2 gas to form 27.35g of h2o. in a second experiment
Pure olive oil has an iodine value of about 85. A very old sample or originally pure olive oil is found to have an iodine value of 55. Explain
Calculate the concentration of the acid solution after all the metal has reacted.
what is the ph when 0.005 moles of hcl is added to 0.100l of a buffer solution that is 0.100m in ch3co2h and 0.100m
The Carbohydrate content of a glycoprotein is determined to be 12.6, 11.9, 13.0, 12.7, 12.5 g of carbohydrate per 100 g protein in replicate analysis.
what is the freezing point in celsius of a solution prepared by dissolving 6.20 g of mgcl2 in 110 g of water? the value
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