If we assume Coal is 70% carbon and 30% inert materials that don't combust, when burned the equation is C+O2→CO2 + 95 kilocalories per mole of carbon (1 mole = 12 grams).  How many Btu's are released by burning 1 ton (1000 kg) of coal?

How many grams of antifreeze would have to be added to 15 kg of water in the trucks cooling system to keep it from freezing during a cold Ohio winter temperatures of -20° C

4. Adsorption Isotherm Curve: The low pressure (beginning region) of an adsorption isotherm curve can be approximated with a linear equation of the form: X₁* = K x P₁. The data in the table below provides laboratory measured values of the partial pressure of an adsorbate P¡ versus the mass fraction of adsorbate on the adsorbent X;*. Determine the value of K for the equation above using the data in the table, and also provide the r-squared value of this linear equation fit. Recommend you use the linear regression function in EXCEL to determine these answers. X* (gr adsorbate/gr PCC14 (mm Hg) adsorbent) 0 0 2 0.084 3.5 0.15 5 0.27 7 0.38 10 0.525 Value of K in equation above r-squared value from linear equation fit

Calculate the standard reaction entropy at 298K for the following balanced reaction equation: 2A + B →→ 2C + D Where A, B, C and D are different molecules. The following table lists the absolute entropies for the molecules: A B C D Asº (JKmol-1) Please enter your answer (J/K/mol) with two decimal places, as 24.11. 96.2 176.33 107.1 233.61