How much heat is required to warmof ice
How much heat (in kJ) is required to warm 12.0 g of ice, initially at -13.0 degree celcious, to steam at 114.0 degree celcious? The heat capacity of ice is 2.09 J/g * degree celcious and that of steam is 2.01 J/g * degree celcious.
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Magnesium has three isotopes, Mg-24, Mg-25, and Mg-26. The percentage abundance of each in order is 78.70%, 10.13%, 11.17%. Calculate the relative atomic mass of Magnesium.
A baseball is seen to pass upward by a window 22m above the street with the vertical speed 13m/s. if the ball was thrown froom the street what was its initial speed?
21.7 mL of a 0.05 M sulfuric acid (H2SO4) solution are required to neutralise 25 mL of a sodium hydroxide (NaOH) solution. What is the concentration (in mol L-1) of SO42- ions in the final solution?
Determine the theoretical and percent yields of ethanol if 684g sucrose undergoes fermentation and 349g ethanol is obtained?
How many grams of KHP are needed to exactly neutralize 27.4 mL of a 0.235 M potassium hydroxide solution?
A volume of 200mLK of nitrogen is collected over water at a temperture of 24 degrees celcius and the atmospheric pressure of 100 kPa. What will be the volume of dry nitrogen at 24 degrees celcius and 125 kPa?
What is the density of an object having the mass of 8.09 an volume of 25 cm3
What are physical challenges of creating and moving one mole of a common household item from the eastern to the western coast of the united states.
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