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Metallic iron crystallizes in a type of cubic unit cell. The unit cell edge length is 287 pm. The density of iron is 7.87 g/cm3. How many iron atoms are there within one unit cell?
A two-bulbed flask contains seven particles. What is the probability of finding all seven particles on the left side. please show and explain how you got the answer. A. 3.10% B. 0.32% C. 0.78% D. 0.93% E. 0.13%
Problem- How much work does it take to move 9.5x10^-4 mol of e- across a 6.70 V potential. Please define the answer and show the math.
The vapor pressure for methanol and ethanol at 50 C is 406 and 222 Torr, respectively. Calculate the total vapor pressure of a mixture at 50 C that contains 0.2 mol of methanol and 0.1 mol of ethanol.
Calculate the [SCN] solution A, where 5.3 mL of 1.9x10^-3 M NaSCN is diluted to 42.0 mL with 0.1 M Fe(NO3)3. Next calculate the [FeSCN2+] in the solutions prepared by diluting volumes of solution A with 0.1 M Fe(NO3)3 to a final volume of 1.0101 mL..
Determine the limiting reactant if 140 grams of Calcium phosphate combines with 3.63 mol of sulphuric acid and also explain how many moles of calcium sulphate can be obtained?
calculate the mass of silver chloride and dihydrogen monosulfide formed when 85.6 grams of silver sulfide reacts with excess hydrochloric acid.
Can the five percent approximation be applied in determining the pH of the following solutions? Yes No 8.07×10-3 M dihydrogen citrate ion Yes No 7.51×10-5 M chlorous acid Yes No 4.38×10-2 M carbonic acid Yes No 1.44×10-2 M hydrocyanic acid
a 10 ml sample of a solution of pbclo32 was diluted with water to 170 ml. a 100 ml sample of the dilute solution was
A compound containing only C, H, and O, was extracted from the bark of a sassafras tree. The combustion of 86.9 mg produced 236 mg of CO2 and 48.3 mg of H2O. The molar mass of the compound was 162 g/mol. Find out its empirical and molecular formul..
A voltaic cell made of a Cr electrode in a solution of 1.0 M in Cr^3+ and a gold electrode in a solution that is 1.0 M in Au^3+.
A 2.154-g sample of HgO produces 125 mL of oxygen collected over water at 24 degrees C and an atmospheric pressure of 763 mm Hg. Calculate the STP molar volume for oxygen.
why conceptually does the ground state for the particle in the box model correspond to n1 while for the harmonic
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