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A certain antacid contains only Al(OH)3 (FW=78.00) and Mg(OH)2 (FW=58.33). If a 0.2678 g sample of the antacid requires 10.25 mL of 0.9815 M HNO3 for neutralization, what is the % by mass of Al(OH)3 in the mixture
Ascorbic Acid (Vitamin C) is diprotic acid (Ka1= 8.00x10^-5 and Ka2= 1.60x10^-12). What is the pH of a 0.250M solution of ascorbic acid?
If a sample of oxygen that occupies 1.00 x10^6 mL at 575 mmHg is subjected to a pressure of 1.25 atm, what is the final volume of the the sample?
Acid-catalyzed dehydration of cyclobutylmethanol proceeds via an E1 mechanism and gives two alkenes.
The concentration of carbon monoxide in an apartment is 62 micrograms/m^3. How many grams of carbon monoxide are present in a room measuring 10 x 12 x 7.5 feet? Use correct number of sig figs.
the enthalpy of formation of ethanol, C2H5OH, is -277.0 kJ/mol at 298.15k. calculate the enthalpy of combustion of one mole of ethanol, assuming that the products are CO2 (g) and H2O.
On a hot day a room air conditioner uses 1.0 kW of electrical power and works with a coefficient of performance of 2.9. How much heat does the AC remove from the room in 1 min?
12.0 moles of gas are in a 5.00 L tank at 23.9 C. Calculate the difference in pressure between methane and an ideal gas under these conditions.
What is the difference between July and January temperatures in the Celcius scale? What is the difference between July and January temperatures in the Kelvin scale?
when deltaG=0; a system is at equilibrium. Use values for delta H standard and delta S standard to determind the temperature
A sample of helium gas has a volume of 900. milliliters and a pressure of 2.50 atm at 298 K. What is the new pressure when the temperature is changed to 336 K and the volume is decreased to 450. milliliters?
These two solutions will be added together into a beaker to create one solution. Adding them together cause them to dilute each other. Calculated the new molarity of HX. Give your answer to four decimal places.
what is the chemical formula of a gas if it has a pressure of 680 torr and a density of 1.60 g/L at 27 degrees C.
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