The combustion of methane gas (CH4) forms CO2(g)+ H2O(ℓ). Calculate the heat produced by burning 1.92 mol of the methane gas. The standard molar enthalpy of combustion of methane is 890.2kJ/mol. Answer in units of kJ.

A100 kmol/h stream that is 97 mole% carbon tetrachloride (ccl4) and 3% carbon disulfide (cs2) is to be recovered from the bottom of a distillation column. the feed to the column is 16 mole% cs2 and 84% ccl4, and 2% of the ccl4 entering the column is contained in the overhead stream leaving the top of the column. calculate the mass and mole fractions of ccl4 in the overhead stream, and determine the molar flow rates of ccl4 and cs2 in the overhead and feed streams. 12. mw_ccla- 153.82; mw_cs2-76.14.

The yearly amounts of carbon emissions from cars in belgium are normally distributed with a mean of 13.9 gigagrams per year and a standard deviation of 5.8 gigagrams per year. find the probability that the amount of carbon emissions from cars in belgium for a randomly selected year are between 11.5 gigagrams and 14.0 gigagrams per year. a. 0.340 b. 0.660 c. 0.167 d. 0.397

Imagine you are a business executive who wants to pursue an environment policy for your company that limits pollution and uses fewer raw materials but would cost more what might be the discussion to your next broad meeting how would you make your case to your shareholders