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A 500 gram sample of aluminum pellets (specific heat capacity = 0.89 J/degrees C x grams) 10 gram sample of iron pellets (specific heat capacity= .45 J/ degrees C x g) are heated to 100 celsius. mixtu
The can says that exposure to temperatures above 130°F may cause the can to burst. What is the pressure in the can at this temperature?
If 352 g of magnesium reacts with excess oxygen to produce 296 g of magnesium oxide, what is the percent yield for the reaction?
From your understanding of colligative properties,how would design an experiment to measure the freezing point of a material which freezes at -2degree celcius using the same apparatus in the labora
if the ethyl alcohol at 35 degree rise through 8.36 cm in a capillary tube of radius 0.20 mm , What is surface tension.
If 0.0050 mol of methyl acetate is dissolved in 10.0 grams of tert-butanol, what is the expected freezing point depression in celcius degrees?
calculate the total volume of gases that can be collected at 1.2 atm and 293 k from 260 grams of nitroglycerin 4 C3H5(NO3)3
This mixture is also heated to 350°C. After equilibrium is reached, will there be any difference in the composition of the mixtures in the two flasks? yes no Explain.
How many grams of dry NH4Cl need to be added to 2.10L of a 0.500 M solution of ammonia, , to prepare a buffer solution that has a of 8.84? Kb for ammonia is 1.8*10^-5.
An electrochemical cell consists of a nickel metal electrode immersed in a solution with [Ni2+] = 1.0 M separated by a porous disk from an aluminium metal electrode immersed in a solution with [Al3+]
What would be the effect on your calculated molecular weight of p-dichlorobenzene if your lab partner left the stopper of the apparatus while you were weighing the solid. Explain in detail what wou
What mass of carbon dioxide (in kg) is produced upon the complete combustion of 18.9L of propane (approximate contents of one 5-gallon tank)? Assume that the density of the liquid propane in the ta
Calculate the molecular weight of an unknown substance if 0.2064 g of solid was added to 25.00 ml of cyclohexane and the resultant solution exhibited a freezing point depression of 2.1 degrees celc
Calculate the pH after 0.020 mol HCl is added to 1.00 L of each of the four solutions. A mixture containing 0.100 M HONH2 and 0.100 M HONH3Cl
Molecular Mass by Freezing point Depression (Preliminary Lab) The following errors occurred when the above experiment was carried out. How would each affect the calculated molecular mass of the solu
A volume of 95.0ml of h2o is initially at room temperature 22.0 C. A chilled steel rod at 2.00 *C.is placed in the water. If the final temperature of the system is 21.2 *C. What is the mass of the
Hydrogen and oxygen gas combine explosively to produce water. Write a balanced chemical equation for this process. If 10 mol of hydrogen reacted with oxygen, what volume of liquid water could be produ
What is the molarity of Cl^- ions in a solution formed by dissolving 7.20 g of the mixture in enough water to form 500.0 mL of solution?
How many mL of a 0.136 M aqueous solution of aluminum bromide, AlBr3, must be taken to obtain 17.3 grams of the salt?
The density of benzene at 15 degrees C is 0.8787 g/mL. Calculate the mass of 0.1500 L of benzene at this temperature.
Find the gram formula mass of each compound.
How long would it take for 1.50mol of water at 100.0 degrees to be converted completely into steam if heat were added at a constant rate of 16.0J/s ? the constants are: Specific heat of ice: 2.09J(g
An unknown compound has the formula CxHyOz. You burn 0.220 g of the compound and isolate 0.312 g of CO2 and 0.191 g of H2O. What is the empirical formula of the compound? If the molar mass is 62.01
Acetylene gas is produced by adding water to calcium carbide. How many moles of cac2 can be formed from 98g of h20? How many grams of acetylene are produced by adding water to 5g of CaC2?
Some sulfuric acid is spilled on a lab bench. It can be neutralized by sprinkling sodium bicarbonate on it and then mopping up the resultant solution.