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Calculate the amount of heat needed to change 1.0 g ice at 0 degrees C to water vapor at 100.0 degrees C.
A solution containing 10.mmol of CO3^-2 and 5.0 mmol. Of HCO3- is titrated with 1.0M HCL What total volume of HCL must be added to reach the second equivalence point?
Calculate the enthalpy of solution in kilojoules per mole of solute. Enter your answer numerically in kilojoules per mole of solute.
If a gas occupies 625 mL at 0 Celsius and 760 torr pressure, what will its volume be at 373 degree C and 1520 torr pressure? How would you describe how to separate a mixture of oil, sand, and saltwater.
Ethanol is a common laboratory solvent and has a density of 0.789 g/mL
How many grams of NaN3 are required to produce 11.0 ft3 of nitrogen gas if the gas has a density of 1.25 g/L?
sample of HCl solution reacts with excess Mg to produce 4.20 L of H2 gas at 745 mmHg pressure and 35.0 degrees C. What is the molartiy of the HCl solution?
What causes cycloalkanes to have two less hydrogen atoms than similar alkanes that are open chain ones? i) What is the three dimensional structure of methane? Why?
85.0 of is initially at room temperature (22). A chilled steel rod at 2 is placed in the water. If the final temperature of the system is 21.2, what is the mass of the steel bar?
Using active extraction (changing the polarity) and gravity filtration to remove a component, describe how you would obtain pure naphthoic acid from this mixture.
If 25.0 mL of NO2 gas is completely converted to N2O4 gas under the same conditions, what volume will the N2O4 occupy?
What is an alternative way to draw this molecule? (include the resulting formal charge on the Nitrogen, please)
what mass of water must be removed from the air each time the volume of air in the room is cycled through the air conditioner? The vapor pressure from water at 30 C is 31.8 torr.
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