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A 5.00g sample of liquid water at 25.0 degrees Celcius is heated by the addition of 84.0 J of energy. The final temperature of the water is _________ degrees Celcius. The specific heat capacity of l
Use the rydberg equation to calculate the wavelength (in nm) of the photon emitted when an electron in a hydrogen atom undergoes a transition from n=4 to n=2.
When aluminum is placed in a concentrated hydrochloric acid, hydrogen gas is produced. 2Al (s) + 6HCl (aq) ------> 2AlCl3 (aq) + 3H2 (g) What Volume of H2 (g) is produced when 4.10 g of Al (s) re
Choose the selection which most accurately gives both the value of the angle numbered 21 and the value of the angle numbered 22 in the figure above.
Draw the type of allylic carbons present in the following (draw structure) a. 2,3,3-trimethyl-1-butene b. 1-methylcyclohexane
Propanoic acid, HC3H5O2, ionizes in water. A 0.496 g sample of sodium propanoate, NaC3H5O2 (molar mass: 96.07 g/mole) is added to a 50.0 mL sample of a 0.265 M solution of propanoic acid. Assuming t
Argon gas is 10 times denser than helium gas at the same temperature and pressure. Which gas is predicted to effuse faster? How much faster? Please tell me which gas is predicted to effuse faster an
Consider that a single box represents an orbital, and an electron is represented as a half arrow. Orbitals of equal energy are grouped together.
What volume of H2O(g) is produced when 7.90 mo of C2H4 (g) reacts at STP? C2H4 (g) + 3O2 (g) ----> 2 CO2 (g) + 2 H20 (g)
Suppose you were instructed to add 38 g of sodium chloride (NaCl) to 100 mL of water. a. prepared as instructed at 20°C b. heated the mixture in (a) to 100°C
Determine the wavelength, in nanometers, of radiation with of 218 kj/mol energy. please show how you came up with answer
Describe the following combinations as either soluble or insoluble. 1. Sand sinks to the bottom of a beaker of water. 2.Antifreeze and water mix completely. 3. Benzene, a liquid, floats on the surfa
Identify each of the following substances as ionic, polar covalent, or nonpolar covalent. Also predict its solubility in water. 1. Calcium chloride (CaCl2) 2. Pentane (C5H12) 3.Methyl alcohol (CH3OH
If you had excess chlorine, how many moles of of aluminum chloride could be produced from 29.0 of aluminum
She claims that the uncertainty of the bacterium's position is greater than the microscope's viewing field, and the bacterium is thus impossible to locate. What is the uncertainty of the position of
Why was anhydrous not wet diehtyl ether used in the preparation and reaction of the grignard reagent
Assuming that the tablet contained only calcium carbonate and an inert binder calculate the mass of calcium carbonate and mass percent of calcium carbonate.
Why was acetyl chloride /ethanol used as source of hydrocholic acid instead of aqueous hydrocholic acid
A 16.96 gram sample of an organic compound containing C, H and O is analyzed by combustion analysis and 16.58 grams of CO2 and 3.394 grams of H2O are produced.
Case Study The Scenario: You are back at your plant the Monday after the Dangerous When Wet leaking tanker incident happened, and you are telling your fellow HazMat Team Coordinator ho
Suppose 12.0 g of carbon (C) reacts with 65.0g of sulfur (S) to give 76.0 g of the compound carbon disulfide (CS2). In the process, all the carbon gets used up, but some elemental sulfur is left
If iron is oxidized to Fe2+ by a copper(II) sulfate solution, and 0.519 grams of iron and 21.0 mL of 0.590M copper(II) sulfate react to form as much product as possible, how many millimoles (mmol
Calculate the density of the sample. Show all work and use significant figures and units.
Disadvantages of using a craig tube in a recrystallization?
Calculate the mass percent composition of carbon in each the following carbon compounds. C4H10 C6H10 C8H13O5N