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What is the empirical formula of a hydrocarbon if complete combustion or 1.900 mg of the hydrocarbon produced 6.423 mg of CO2 and 1.315 mg of H2O? Be sure to write C first in the formula.
empirical formula =
What is the molecular formula if the molar mass of the hydrocarbon is found to be about 40
molecular formula =
Calculate the standard entropy change for the reaction 2H2(g)+ 02(g) --> 2H_2O(l) using the data from the following table: Substance Delta Hf degrees Delta Gf degrees S degrees
Given Mo Energy level diagram for diatomic molecules, which of the following molecular molecular ions has a bond order of 3. Why
A 952 cm3 container of gas is exerting a pressure of 108 kPa while at a temperature of 48 oC. Calculate the pressure of this same amount of gas in a 1236 cm3 container at a temperature of 64 oC
In photosynthesis, plants from glucose (C6H12O6) and oxygen from carbon dioxide and water
Under what circumstances with regards to degrees of no polar characters are frenkel and schottky defects likely?
Benzoic acid is a weak acid that has antimicrobial properties. Its sodium salt, sodium benzoate, is a preservative found in foods, medications, and personal hygiene products. Benzoic acid dissociates in water: C6H5COOH C6H5COO- + H+
The precipitate of CaC2O4, weighed 1.437 grams determine the molarity of calcium chloride in the solution?
How are the princible of Le chatelier's used to increase the percentage yield in the production of ammonia in the haber process?
A solution of iodine was standardized with ascorbic acid. A 0.1150 g sample of ascorbic acid required 28.37 mL of I2 to reach a starch end point. Calculate the molarity of the iodine solution.
100 mL of 0.200 M HCl is titrated with 0.250 M NaOH .What is the pH of the solution at the equivalence point?Express the pH numerically.
calculate the ph of soultion prepared by adding20.0ml of 0.100m hcl to 80.0ml of a buffer that is comprised pf 0.25 M NH2NH2
A sample of chloroform is found to contain 10.5 g of carbon, 93.1 g of chlorine, and 0.88 g of hydrogen. If a second sample of chloroform is found to contain 20.8 g of carbon, what is the total mass of chloroform in the second sample?
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