1. Estimate the energy used and CO 2 emissions due to the two different hand drying scenarios, filling slides 5/7 and 6/8 2. Briefly discuss (slide 9) the results identifying for each scenario the dominant contributions and ranking the two scenarios. 3. Read from the optional reading in the LCA book ch4 the section on Checking the ratio of CO2 emitted per MJ non renewable primary energy (p.14,15,16 as numbered on paper) and discuss on slide 9 whether the ratios gCO2/MJ make sense (after filling last column of slides 6/8