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A 32.2 g iron rod, initially at 23.0 C, is submerged into an unknown mass of water at 63.0 C, in an insulated container. The final temperature of the mixture upon reaching thermal equilibrium is 58.8 C.
What is the mass of the water?
The rate of a chemical reaction is found to double when the temperature is raised from 298K to 308K. Determine the activation energy.
A hydrogen atom is removed from the first carbon atom of a butane molecule and is replaced by a hydroxyl group. Draw the new molecule formed.
When an ion-selective electrode for X was immersed in 0.0680 M XCl, the measured potential was 0.0400 V. What is the concentration of X when the potential is 0.0550 V
in an industrial process nitrogen is heated to 400kelvin at a constant volume of 1m3.the gas enters a container at 300k and 100atm. the mass of the gas is 92.4kg. use the vander waals equation to determine the approximate pressure of gas
glycerol rmc3 rmh8 rmo3 is a substance used extensively in the manufacture of cosmetics foodstuffs antifreeze and
A 27.0 mL solution of 0.100 M CH3COOH is titrated with a 0.200 M KOH solution. Calculate the pH after the following additions of the KOH solution. a.) 0.00 mL b.) 5.00 mL
The background section describes why you want the bleach to be far in excess of the dye. State how much greater the bleach should be to be considered in large excess. If the due is 1 x 10-5 M how much can the bleach be diluted before you no longer..
A copper storage tank containing dilute H2SO4 at pH 0.1 is blanketed with hydrogen at 1 atm. Calculate the maximum Cu(2+) contamination os the acid in moles Cu(2+) per liter. What is the corresponding contamination if the hydrogen partial pressure..
Explain how to prepare 1L of a buffer at pH 7.4 using 1M hypochlorous acid (Ka = 3.5 x 10-8) and a 1 M NaOH solution.
A certain human gene was shown to have only 80% of its DNA sequence identical to that of an ape, but its corresponding protein sequence has 95% identity
Why does MgCo3 dissolve in water and not in alcohol. Why does Baking Soad dissolve in water. Why does Baking Soda disslove in alcohol. How do you tell the difference beteewn MgCO3 and sugar using thir different solubility to alcohol and water.
Air bags in automobiles inflate when sodium azide, NaN3, rapidly decomposses to its component elements: 2NaN3(s)-----2Na(s)+3N2(g). a)how many moles of N2 are formed by the decomposition of 2.50 moles of NaN3
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