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What is the definition of an ecological footprint? What is the ecological footprint of the U.S?
A 14.0g sample of an unknown gas occupies 10.8L at a temperature of 30 degrees celsius and a pressure of 750mmHg. What is the molar mass of the gas
A scientist wants to make a solution of tribasic sodium phosphate, for a laboratory experiment. How many grams of will be needed to produce 375 of a solution that has a concentration of ions of 1.10
A layer of iron(III) oxide forms on the nail, increasing the nail's mass. How much oxygen has reacted with the iron if the mass of the nail has increased to 5.89 g?
what volume of 0.250 moll cach3coo3 calcium acetate solution should you add to 25.00 ml of 0.500 moll ch3cooh to
Why is the enthalpy based on the moles of NH3 and not HCl? c. Calculate the percent error in part (a) if the accepted Hrxn is -55.0 kj/mol
The reaction of aluminum with hydrocholoric acid can be shown as follows : 2AI(s) + 6 HCI(aq) --> 2AICI3(aq) + 3H2(g). How many mole of aluminum are needed to react with 1.16 mol of hyrocholoric acid
task 1for the list of molecules below demonstrate the different ways of representing organic
Question- Which of the following will confirm that the decomposition of SO2Cl2 (to form SO2 and Cl2) is a first order process
The emulsifying agent from hand cream, a salt, is prepared from two chemicals. Write the structure of stearic acid.
Each uranium atom that decays eventually results in the formation of one lead atom. Assuming that the rock did not contain any lead-206 atoms originally, find the age of the rock when the ratio of uranium to lead atoms is 8 to 1.
A 1.85 g sample of a compound containing merely carbon and hydrogen is combusted to give 5.43 g Co2 and 3.33 g H20. Explain what is the empirical formula of the compound
Taking into account the existence of any lone pairs of electrons, what is the approximate geometry of electron groups surrounding the central Cl atom in the perchlorate ion (ClO4-)
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