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25.0 mL of ethanol (density = 0.789 g/mL) initially at 5.4°C is mixed with 34.6 mL of water (density = 1.0 g/mL) initially at 25.3°C in an insulated beaker. Assuming that no heat is lost, what is the final temperature of the mixture?
What volume of hydrogen is necessary to react with five liters of nitrogen to produce ammonia?
Is the dissolving of calcium hydroxide in water an endothermic or exothermic process?
A student mixes 5.0 mL 2.00 x 10-3 M Fe(NO3)3 with 4.0 mL 2.00 x l0-3 M KSCN, and 1.0mL deionized water. She finds that in the equilibrium mixture the concentration of FeSCN2+ is 1.2 x l0-4 M.
If 0.130 mol a third gas is added with no change in volume or temperature, what will the total pressure become?
What are ALL of the intermolecular forces of NaNO3? Choices (pick all that apply)
How many milliliters of 0.200 M NaOH are needed to neutralize 100. mL of 0.100 M HCl
used in high speed centrifuges to separate the parts of a biological cell. How many liters of 3.07 M sucrose contain 245 g of solute?
If the propanoate ion comes from strontium propionate, Sr(C3H5O2)2 then how many grams of strontium propanoate are needed? Assume it is completely soluble.
What are the major differences between "theories", "hypotheses" and "laws". What is an example that would explain them.
The activation energy for a particular reaction is 95 kJ/mol. By what factor will the rate constant increase when the temperature is increased from 50 oC to 62 oC?
when 50.0 g of Copper are reacted with silver nitrate solution Cu + 2AgNo3 - Cu(No3)2 +2 Ag 148 g of silver are obtained. what is the percent yeild of silver obtained?
Show how the following compounds could be synthesized from benzene a. benzoic acid b. aniline c. m-chloroenzenesulfonic acid d. m-chloroethylbenzene e. m-brombenzonitrile f. benzyl methyl ether g
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