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The heat of fusion of sodium metal is 630cal/mol. The melting point of sodium is 98 degrees celcius. How much heat is absorbed by sodium when 800 grams os solid sodium metal become liquid at 98 degrees celcius?
Consider three different compounds of the hypothetical element X using the table of bond lenghts as a reference, rank the three compounds shown below in order of increasing
a container holds 2,0 of gas. the total average change in KE of gas molecules in the container is equal to the the sum of KE of an 8,0x10^-3 -Kg bullet with speed
Calculate the quantity, in grams, of formic acid and sodium formate necessary to make 500. mL of a buffer that has a formic acid concentration of 0.75 M and a sodium formate concentration of 0.75 M.
How many milliliters of 0.200 M NaOH will be required to titrate 19.6 mL of 0.479 M H2SO4
what is the mole fraction of hydrogen in a gaseous mixture that consists of 8.00 g of hydrogen and 12.00 g of neon in a 3.5 liter container maintained at 35.20 degrees celsius?
A 0.1000M solution of ethanoic acid (HC2H3O2) is only partially ionized so that [H+]=2.25X10^-3M. What is the acid dissociation constant for this acid?
In the oxidation of glucose (C6H12O6), water and carbon dioxide are formed when the sugar is reacted with oxygen gas. If 4.39 grams of glucose are reacted, assuming 100% yield, how many moles of carbon dioxide would evolve?
Recommend an explanation why the cyclic intermediate might have two important groups in a trans relationship that could factor the E-alkene.
How are conditions of pressure and temperature, at which two phases coexist in equilibrium, shown on a phase diagram? By a line separating the phases by the endpoints of the line segment separating the phases
An unknown, rectangular substance measures 3.6 cm high, 4.21 cm long, and 1.17 cm wide. If the mass is 21.3g, what is this substance's density?
A metal sulfide is 71.6% metal by mass. What is the mass fraction of the metal in the metal sulfide?
What volume of a concentrated { HCl} solution, which is 36.0% { HCl} by mass and has a density of 1.179 {g/mL}, should be used to make 5.30L of an {HCl} solution with a {pH} of 1.7.
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