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How do you calculate/what formula do you use when trying to determine any general type of chemical concentration using chemical stoichiometry?
in the following experiment a coffee-cup calorimeter containing 100. rm ml of rm h2o is used. the initial temperature
if 135 g of steam at 100 degrees C and 475 g of ice at 0 degrees C are combined, what is the temperature of the resultant water, assuming that no heat is lost?
A compound contains only C, H, and O. Combustion of a 1.48g sample in excess oxygen yields 2.60g of CO2 and 0.799 g of H2O. A separate experiment illustrates that a 2.43g sample contains 0.340 g of N. Explain what is the empirical simplest formula..
Given that the total number of atoms on our planet remains fairly constant, how is it ever possible to deplete a natural resource such as a metal
Standard reduction potentials are given on the next page. (a) Draw a diagram of the electrochemical cell, labeling all electrodes and solutions. (b) What is the pH in the Pt | H+ | H2 half-cell? (c) What is the value of the equilibrium constant fo..
Suppose that 0.680 mol IBr in a 2.50-L flask is allowed to reach equilibrium at 150.°C. What are the equilibrium concentrations of IBr, I2, and Br2? [Br2] ?? M [I2] ?? M [IBr] ?? M
Explain how the formation of a soap ‘micelle' helps remove dirt and oil in an aqueous environment.
Some species with two oxygen atoms only are the oxygen molecule, O2, the peroxide ion, O2-2 , the superoxide ion, O2-1 , and the dioxygenyl ion, O2+1 . Draw an MO diagram for each, rank them in order of increasing bong length, and find the number ..
Why does the ionisation of two or more electrons from an atom of a transition element take place with the removal of s electrons in preference to the d electrons?
Calculate the Pickering series wavelength associated with the excited state ni = 8. B)What region of the electromagnetic spectrum does this transition fall in? gamma ,x-ray ,visible ,radio ,microwave ,infrared ,ultraviolet
A solution of I- gives 301.0 mV in a cell with an iodide ion selective electrode. 10.0 mL of the solution is mixed with 3.00 mL of 1.00 x10^-6 M AgNO3, and the Ag is completely precipitated as AgI. The cell then gives 310.2 mV. Assume the electrod..
How fast is it traveling at aphelion (the most distant point), which is 8.0 x 108 km from the Sun?
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