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an atomic element has 20 electrons write the ground state electron configuration of the element
Chlorine dioxide, ClO2, is a reddish yellow gas used in bleaching paper pulp. The average speed of a ClO2 molecule at 25 degrees Celsius is 306 m/s. What is the kinetic energy of a ClO2 molecule moving at this speed?
Calculate the energy per mL if the energy per gram for Methanol (MW = 32g) is 0.83 kcal/gram and for Ethane MW
Chlorine forms a number of oxides with the following oxidation numbers: +1,+3,+4,+6 &+7.Write formula for each of these compounds.
The vapor pressure of water at 25C is 3.13X10^-2 atm, and the heat vaporization of water at 25 C is 4.39 X 10^4 j/mol. Calculate the vapor pressure of water at 81C.
Suppose that 27 g of each of the following substances is initially at 29.0 C. What is the final temperature of each substance upon absorbing 2.45 kJ of heat?
Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.140 M HClO(aq) with 0.140 M KOH(aq). The ionization constant for HClO can be found here.
When hydrochloric acid comes in contact with potassium permanganate, what dangerous chemical is released?
Calculate the amount of isopentyl acetate that should be present in the reaction mixture at equilibrium based on 300 mmol of acetic acid and 150 mmol of isopentyl alcohol as starting quantities. Use equilibrium constant of 4.2 for this calculation..
Urea, NH2CONH2, is a nonvolatile nonelectrolyte. Calculate the boiling point of a solution of 30.0g of urea in 250g of water
The specific heat capacity of a substance is 0.62 J/(g?K) and its molar mass is 225 g/mol. Find its molar heat capacity.
It is possible to draw a valid Lewis structure that follows the octet rule for all of the following except one. Which one cannot be drawn without violating the octet rule
Calculate the number of moles of Cl atoms in 1.20×1024 of magnesium chloride, MgCl2.
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