25 Empirical Formula, Stoichiometry and Redox Problems

1.)A hydrocarbon has the formula C12H20. 61.51 g of it are burned in the presence of excess pure oxygen gas. How many grams of water are produced in this combustion? Use these atomic weights: 12.01(C), 1.008(H), and 16.00(O). 2.)How many mL of water are needed to dilute 32.07 mL of a solution 1.53 M in HCl to 0.154 M HCl ...continues

Percent Yields and Limiting Reagents : NiCl2.6H2O + Ethylenediamine ---> Ni(en)3 Cl2

Some backround data: mass of NiCl2 + 6H2O = 3g mass of Ethylenediamine used: 2.85g initial moles ethylenediamine: .0474 (I think) product formed: mass of Ni(C_2_H_8_N_2_)_3_CL_2_: 3.597 The questions I need answered: -theoretical moles of product, based on stoichiometry. -molecular mass of product -theoretical mass o ...continues

Weight of zinc in pounds contained in 936,000 yds3 of zinc hydroxide (Zn(OH)2) with an average concentration of 200,000 mg/Kg.

I need the weight of zinc in pounds contained in 936,000 yds3 of zinc hydroxide (Zn(OH)2) with an average concentration of 200,000 mg/Kg.

The spacing between two adjacent rotational lines

File attached. Please show all work. Thanks

Liquid Phase Oxidation of S(IV) to S(VI) and pH Lowering

Write the reactions responsible for the LIQUID PHASE oxidation of S(IV) to S(VI), and show how the oxidation can lead to a decrease in pH of rain water. I think you can help me with this. Please let me know. I've included all details.Thank you Dr. M. There are two sets of reactions with 3 parts for each set. I'm not sure w ...continues

Gaussian Plume-Qualitative

Explain qualitatively how the following would change the calculated surface concentration of SO2 assuming a gaussian plume from a smoke stack that follows the gaussian equation for the concentration of SO2 i) The wind speed decreased. ii) The wind speed increased. iii) A stable temperature profile became unstable. iv) An ...continues

Box Model for Steady-State Pollution Concentration Calculations

A Power plant is the main point source of SO2 emissions for a 25 km2 area. Estimate the steady-state concentration of SO2 for this area from this point source given the following temperature data. Windspeed= 5km/hr. The concentration of SO2 is 111.1 g/s. Height (in meters) Temperature (K) 0 300 500 ...continues

Rate of S(IV) to S(VI) at Different pHs using O3 and H2O2

If the ozone concentration in the plume is 80 ppb, calculate the liquid-phase rate of S(IV) oxidation in the plume by ozone. The rate for the oxidation of SO2 by H2O2 is given by the expression: please see attachment for expression. where k = 7.45  107 M-2 s-1 and K = 13 M-1. If the pH of the rainwater is 4.3, ca ...continues

Stoichiometry and Theoretical Yield Problems

1) What is the weight percentage of C in C6H12O6? Report your answer to 3 significant figures. 2) What is the molar mass of TiCl4? Report your answer to two decimal places. 3) 20.0g of each Fe2O3 and Al are mixed together and react according to the following equation. What is the theoretical yeild of Fe? Report your answer in ...continues

How many millitres of 0.480M NaOH would be required to titrate a 5.00ml solution of 0.320M H2SO4? Report answer to the correct number of significant figures.

Please help with these questions. Thanks! 1) How many millitres of 0.480M NaOH would be required to titrate a 5.00ml solution of 0.320M H2SO4? Report answer to the correct number of significant figures. 2) Write a balanced equation for the combustion of octane, C8H18. 3) If the standard enthalpy of formation (ΔHf) of me ...continues