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Compute the mass of one atom of helium atomic mass = 1.01 amu. Compute the wavelength of this atom if it is traveling at 0.8c
Calculate the molarity of a solution made by dissolving 0.0715 mol Na2SO4 in enough water to form exactly 550. mL of solution
What is the thickness of the foil. the question asks for the thickness of foil in millimeters and also tells that the density is 2.699 g/cm^3.
At some temperature,a 100-L reaction vessel contains a mixture that is initially 1.00 mol CO and 2.00 mol H2. The vessel also contains a catalyst so that the following equilibrium is attained:
A 0.2527-g sample of a mixture of Mg(OH)2 and Al(OH)3 was treated with 50.00 mL of 0.225 mol L?1 HCl(aq). The resulting solution required 13.73 mL of 0.176 mol L?1 NaOH(aq) to neutralize the excess, unreacted HCl. What was the percentage by mass o..
Show the orbital-filling diagram for rm N (nitrogen). Stack the subshells in order of energy, with the lowest-energy subshell at the bottom and the highest-energy subshell at the top.
you have 1005.3 g of a bleach solution. the percent by mass of the solute sodium hypochlorite naocl is 3.62. how many
Define Both (E) - and (Z)-2-chlorobutenedioic acids dehydrochlorinate to give acetylene dicarboxylic acid. Explain the Z acid reacts about 50 times faster than the E acid.
if a sample of gas is at 2 atm and is at 15 degrees celsius, what would be the new pressure in the gas if the gas is heated to 100 degrees celcius?
The value of Ka for nitrous acid (HNO2) at 25C is 4.5*10^-4. What is the value of deltaG when [H+]= 5.9*10^-2 M, [NO2^-]= 6.1*10^-4 M, and [HNO2]= 0.19 M
The ground water in Pherric, New Mexico contains 1.80 mg/L of iron as Fe+3. What pH is required to precipitate all but 0.30 mg/L of the iron as Fe(OH)3 at 25oC?
Consider the titration of a 26.0 mL sample of 0.175 M Ch3NH2 with 0.150M HBr . Determine each of the following. 1) the initial pH? 2) the volume of added acid required to reach the equivalence point
Determine the mass of the steel bar if the final temperature of the system is twenty one degree Celsius?
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