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Problem: The reaction that produces iron from ore is shown below:
Fe3O4 (s) + 4 CO (g) → 3 Fe (s) + 4 CO2 (g)
Required:
Question 1: How many moles of iron could be produced from the reaction of 4.3 mol Fe3O4 and 2.4 mol of CO?
Question 2: Identify limiting reactant and determine how many moles of unreacted substance remained in the reaction.
A student started the purification and recrystallization with a crude sample of adipic acid that weighed 20.421 g and obtained a yield of pure adipic acid of 73.5% How much pure adipic acid was recovered
Write the electron configuration of Ni. Using the configuration, predict which electrons the atom will most likely lose when it forms Ni2+ and Ni3+. Explain.
What are the advantages and disadvantages of writing a chemical equation with chemical symbols and formulas instead of just words?
An unknown compound B has the melting point 112.5-114 degrees C. It is suspected that B is either X or A, each compound having reported mps of 115degreesC. Assuming B is X, indicate the mp range (give actual values) for the Melting points
While a 1.00 L flask containing 0.500 atm of gas A is joined with a 2.00 L flask containing 0.850 atm of gas B, as well the stopcock between the flasks is opened, also the gases are allowed to mix thoroughly, the following reaction proceeds at con..
The average distance between Mars and Earth is 1.3 x 10^8 miles. How long will it take a picture transmitted from the Viking space vehicle on Mars' surface to reach Earth
Calculate the pH of a buffer solution obtained by mixing 400.0 mL of 0.200 M acetic acid solution and 100.0 mL of a 0.300 M sodium hydroxide solution.(The pKa of Acitic Acid, CH3OOH is 4.74)
The choice of precipitating reagent is important. Briefly explain what the consequences would be if excess 6M NaOH solution instead of 6M NH3 solution were used to separate Fe3+ and Al3+ ions from Ca2+, Cu2+, and K+ ions at pH 9-10.
Problem- Give the percent yield when 28.16 g of CO2 are formed from the reaction of 4.000 moles of C8H18 with 8.000 moles of O2.
calculate the energy of a photon of light with a wavelength of 360nm.
T1= 600 K T2= 870 KEa = 262KJ/mol = 262000 J/molK1 = 6.1*10^-8 s-1K2= ?
Find out the pH of a .06M solution of H2SO4. The dissociation occurs in two steps Ka1 is extremely large; Ka2 is 1.2*10^-2
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