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The Environmental Protection Agency has estimated that 119 tons of mercury are currently emitted to Earth's atmosphere annually due to human activities; this has decreased significantly from the mid-1970s before pollution controls were in place.What volume would the 122 tons of mercury occupy if it were a pure vapor at 1.00atm and 298K ?
When 2.00 mol of NOCl(g) was heated to 225 degrees celcius in a 400L steel reaction vessel, the NOCl partially decomposed according to the equation 2 NOCl(g) -->2 NO(g) + Cl2(g)
Describe what is meant by an amphoteric species. Write the equation for the self ionization of water and know the ion product constant expression for water and its value at 25 degrees.
What is the purpose of distilling two mixtures whose boiling points are very close.
In a fuel cell using oxygen as the oxidizer and hydrogen as the fuel, what is the overall cell reaction?
Al(OH)3 + 3HCl ---> AlCl3 + 3H2O Determine the moles of acid neutralized if a tablet contains 0.200 mol Al(OH)3
What was the initial temperature of the Cu metal If the final temperature of the Cu-H 2 O mixture was at twenty five degree celsius? (The specific heat of copper = 0.377 J/(g°C).)
Each of 2 front tire in the car is filled with a different gas. One tire contains 116g of helium, another tire has 160g of unknown gas. How many times heavier is a molecule of the unkown gas than an atom of helium.
Define the possibility of stereoisomers exists, However, the addition of bromine to an equimolar mixture of cis- and trans-2-butene generates only three stereoisomers. Explain.
Draw the molecule by placing atoms on the grid and connecting them with bonds. Show the formal charges of all atoms in the correct structure. Include all lone pairs of electrons.
A single alkyl bromide reactant theoretically yields either of the given products, depending on the reaction conditions
Assume that this rate remains constant for a short period of time What is A 5.00min after the reaction is started? At what time after the reaction is started will A= 0.565M?
Which solution would increase the osmotic pressure of water the most?
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