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A 8.50 L sample of gas is cooled from 65 C to temperature at which its volume is 7.10L. Explain what is this new temperature? Presume no change in pressure of the gas
The elemental mass percent composition of ascorbic acid (vitamin C) is 40.92% C, 4.58% H, and 15.51% O. Determine the empirical formula of ascorbic acid.
nitrous oxide n2o is oxidized byoxygeno2 to produce nitrogen dioxideno2.if 6.0 mol n2o reacts with 8.0 mol o2 toproduce
Converting Grams and Moles, To do this assignment, use your calculator to do the calculations required. Then invert the calculator to read the message word. Insert the message word into the appropriate space in the statement
Calculate the lattice energy of NaCl. Heat of sublimation is 108kj/mol and Heat of NaCl is -411kj/mol. Energy to dissociate .5 mole of Cl2to an atom of Cl is121.4 kj/mol.
The percent composition by mass of an organic compound is: 32.01%C, 4.03%H, and 63.96%O. if its molarcular mass is 150 amu, what should be its molecular formula
Two acid-base reactions are given below. Of the three reaction arrows presented in each reaction, select the arrow (via the multiple choice circle before it) that best indicates the acid-base equilibrium position
calculate the pH of a solution contaning 0.2m acetic acid (pka=4.7) and 0.1 m sodium acetate? a. write the equation ph=pka+log [A-]/[HA]
Calculate the number of moles of NaOH required for the titration. Calculate the number of moles of HCl in hte HCl sample titrated.
An electron can freely move inside a 500pm x 500pm square box. Find the five lowest energy levels for this electron. Which of them are degenerate?
H2S (aq) is a polyprotic acid, meaning it can dissociate its hydrogen ion more than once. However, HS- (given its negative charge as well as its extra hydrogen ion) can act as either a base or an acid
How do you balance the equation for the oxidation of alanine to liquid water, nitrogen gas, and carbon dioxide gas
calculate the work w when 0.7 litre of an ideal gas at an initial pressure of 4.2 atm is expanded or compressed
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