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Terephthalic acid is a significant chemical used in the manufacture of polyesters and plasticizers. It contains only C, H, and O. Combustion of 19.81 mg terephthalic acid produces 41.98 mgCO2 as well as 6.45 mg H2O. If 0.315 mol of terephthalic acid has a mass of52.3 g find out the molecular formula for terphthalic acid.
what statement best describes the graph representing the integrated 1st order rate law
derive an euation relating the temperature to the velocity of the gas.if nitrogen at 150 degree celcius flows past one section of the tube at a velocity of 2.5 metre/second,what is its temperature at another section where its velocity is 50 m/s
After the reaction was comlete, the volume of the dry has produced was 1 liters at 75 degrees celsuis and 721 torr. what was the percent potassium notrate in the original sample?
Determine the value of Faraday used If the electrolysis was carried out for eighty minutes with a current of four amperes flowing
The purity of a sample containing zinc as well as weighing 0.198 g is determined by measuring the amount of hydrogen formed while the sample reacts with an excess of hydrochloric acid.
Calculate the pH of a buffer solution prepared by dissolving 4.3 g of NaHCO3 and 5.5 g of Na2CO3 in 0.20 L of water.
Calculate the ratio of NaF to HF required to create a buffer with pH = 4.10. Calculate the ratio of CH3NH2 to CH3NH3Cl required to create a buffer with pH = 10.22
suppose 2.3754g of copper(II) sulfate pentahydrate is heated to drive off the water of crystallization. Calculate what weight of anhydrous salt will remain?
What is the pH of a solution made by mixing 25.00mL of 0.200M CH3COOH with 10.00mL of 0.200M NaOH? Ka of acetic acid is 1.8 x 10^-5.
Draw all of the resonance forms of 4-methoxybenzaldehyde which contribute to the reducwd electrophilicity of the aldehyde carbon relative to benzaldehyde.
zinc metal is amphoteric and will react similarity to aluminum metal dissolving in aqueous strong base. write a
If the average solar insolation in USA = 4.25 kWh m-2 per day , and the area of USA is 9.36 x 1012 m2. Calculate: 1. The total available power in W. 2
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