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1. Combustion of 5.23 mg of phenol yields 14.67 mg CO2 and 3.01 mg H2O. Phenol contains C, H, and O. What is the percentage of each element in this substance? What is the empirical formula?
2. An oxide of osmium is a pale yellow solid. If 2.86g of the compound contains 2.16g of osmium what is the empirical formula?
Draw all the unique isomers for the complex [Co(NH3)3(H2O)ClBr]+, which has cobalt in an octahedral geometry. Identify whether each isomer is chiral or achiral. Predict the number of unpaired electrons expected for this complex. (Hint: Co3+ is usu..
calculate the pH and concentration of all species present assuming that the activity coefficients are equal to 1.0 for all species
An iron bar of mass 965 g cools from 94°C to 5°C. Calculate the heat released (in kilojoules) by metal.
A reactor is utilized to convert ethane into acetyle and hydrogen via catalytic dehydrogen. The molar flow rates in the stream leaving this reactor are 1.0 mol\sec of ethane 3.0 mol\sec of acetylene as well as 6.0 mol\sec of hydrogen
An unknown metal is found to be arranged in an fcc structure. The density of the metal is 8.91g/cm3 and the edge cell length is 352.4pm find out the molar mass of the metal. Define what is the metal
Which has the smallest heat of combustion and why? allenic, conjugated, or isolated structures
At what temperature will 6.21 g of oxygen gas exert a pressure of 5.00 atm in a 10.0-L container
The standard enthalpies of formation of SO3(g), S(g) and O(g) are -359.7, +278.8 and +249.0 kJ mol-1, respectively. Use these data to calculate the average bond energy (in kJ mol-1) of the S=O double bond.
What is the enthalpy change when 175 g of C3H8 are burned in excess O2? C3H8(g) + 5 O2(g) ? 3 CO2(g) + 4 H2O(l) ?H° = ?2220 kJ
A sample helium gas takes up 1021 ml at 679 mmHg. For a sample at a consistent temp find out the volume of helium at 745 mmHG
part a you have a stock solution of 14.8 m nh3. how many milliliters of this solution should you dilute to make 1000.0
A mixture of CO, CO2 and O2 is contained within a 275 mL ?ask at 0?C. If the total pressure is 780 torr, the CO has a partial pressure of 330 torr and the CO2 has a partial pressure of 330 torr.
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