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The final temperature at equilibrium is 59.0 celsius. What is the calorimeter constant, if the measured temperature of the calorimeter only rises from 22.5 celsius to 31.5 celsius over this same per
A mass of mercury occupies .750L. What volume would an equal mass of ethanol occupy if mercury's density is 13.546 g/mL and the density of ethanol is .789 g/mL?
An equilibrium mixture for the reaction above contains [H2] = 0.150 M, [I2] = 0.350 M, and [HI] = 0.500 M. What is the value of the equilibrium constant, Kc, for the reaction?
Calculate the PV work done when 50.0 g of tin dissolves in excess acid at 1.00 bar and 25degrees Celsius. Assume ideal gas behavior.
Consider the unbalanced equation above. A 0.150 g sample of CS2 is reacted with 265 mL of O2 at STP. What is the total volume of the final mixture of gases at STP? Use molar masses with at least as
if 5.50 mol calcium carbide reacts with an excess water, how many moles of acetylene will be produced?
100.0 g of nickel at 150 °C was placed in 1.00 L of water at 25.0 °C. The final temperature of the nickel-water mixture was 26.3 °C. What is the specific heat of the nickel?
determine the specific heat capacity of a metal that has a mas of 14 grams. As the metal cools from 400 degrees celcius to 200 degrees celcius, 364 joules of heat is released.
What pH must be maintained by a buffers solution so that no more than 0.010% of the mg2+ present in 0.360 M MgCl2 (aq) remains in solution following the precipitation of Mg(OH)2(s)?
Calculate the apparent molar mass of the solute and suggest an interpretation
A voltaic cell employs the following redox reaction: Sn^2+(aq)+ Mn(s)--> Sn(s) + Mn^2+(aq)
A sample of nitrogen has a volume of 630 mL at a temperature of 49 degC. Assuming that the pressure is constant, what will be the volume when the temperature is 348.6 degC.
The entire experiment was finished. the mass of the empty beaker was found to be 0.123g less at the end of the experiment. what happened?
What is the theoretical yield of aluminum oxide if 1.60 mol of aluminum metal is exposed to 1.50 mol of oxygen?
A patient's blood work showed [HCO3- = 32 mEq/L and pCO2 = 42 mmHg. What is the patient's blood pH? What condition does the patient most likely have?
Hydrogen is produced when methane(CH4) reacts with water. The other product is CO2. Using 80.0g of methane and 16.3g of water, how many liters of H2 can be produced at STP? what is the limiting rea
25.0 mL of a calcium chloride solution is added to an excess of aqueous silver nitrate. The resulting precipitate has a mass of 1.25 grams. If the percent yield of this reaction is known to be 85%, ca
What masses of Glauber's salt must be used to provide 6 mol of sodium sulfate?
A piece of metal with a mass of 148 g is placed in a 50 mL graduated cylinder. The water level rises from 20. mL to 35 mL. What is the density of the metal?
What is the final pressure in the combined bulbs, assuming the gases behave ideally and the volume of the connection is negligible?
Draw the orbital diagram for Ru. Follow both Hund's rule and Pauli's Exclusion Principle
A metal sample weighing 71.9 g and at a temperature of 100.0°C was placed in 41.0 g of water in a calorimeter at 24.5°C. At equilibrium the temperature of the water and metal was 35.0 °C.
Describe the octet rule in terms of noble gas configurations and potential energy
A chemist determines that 65.4 g of zinc reacts with 32.1 g of sulfur. How many grams of zinc sulfide could be produced from 12.0 g of zinc metal?
Predict the atomic radius for selenium, Se, given the atomic radius of sulfur, S, (0.104 nm) and tellurium, Te, (0.143 nm)