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How much heat energy, in kilojoules, is required to convert 68.0 grams of ice at -18.0 degrees C to water at 25.0 degrees C?
Compute the number of grams of H 2 SO 4 in 1 gallon of battery acid if the solution is 38.9% sulfuric acid by mass and has a density of 1.33g/mL ?
at a fixed temperature equal moles of so2 g and o2 g are mixed in a constant pressure container the volume of the
Describe how branched-chain fatty acids affect the fluidity of membranes and rank the following fatty acids in the order of increasing solubility in water.
What volume in mL of 2.00 M sodium bicarbonate solution is needed to neutralize 25.0 mL of 4.00 M HCl?
Assuming that prior experiments have shown the single-step extraction removes only 71.0 % of the ethanol, what is the mass of ethanol in your original unknown?
a)identify the substance reduced. b)identify the substance oxidized. c)identify the oxidizing agent. d)identify the reducing agent. e)write the balanced equation for the overall reaction in acid.
How many mL of .150M bacl2 are needed to react with 35mL of .200M na2so4? How many grams of BaSO4 will be formed?
Correlate the molar mass, molecular size, and bond polarity of these three gases with the molar volume of a perfect gas. O2, Co2, and H2
The pressure in a sealed plastic container is 108 kPa at 41C. What is the pressure when the temperature drops to 22C? Assume that the volume has not changed.
The density of a gaseous compound was found to be 1.23 g L-1 at 330 K and 25.5 kPa. What is the molar mass of the compound?
How many grams of Na2CO3 are present in 29.7 mL of a 31.0% Na2CO3 solution. The density of the solution is 1.09 g/mL.
If 3.67 g of CO2 (MW = 44 g/mol) gas is introduced into an evacuated 3.58 L flask at 65 deg. C, what is the pressure inside the flask?
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