Be sure to answer all parts. What is the change in internal energy (in J) of a system that releases 675 J of thermal energy to its surroundings and has 9.50 × 10² cal of work done on it? Give your answer in scientific notation. 4.453 X10 2 X

How do antiseptics differ from disinfectants? Give one example of each type.

help me

The five parts of question 16 relate to the following three molecules: N-H А в с A (a) Which of the three molecules above are structural isomers? (b) Which of the molecules contains a carbon with linear geometry? (c) Which molecule contains a tertiary amine? (d) Which molecule only contains sp³ hybridized atoms (not including hydrogen)? (e) Which molecule is chiral? Circle the stereocentre in this molecule.

(1) Slick Johnny burns 1.2 Kcal/min when he's completely chilled and fasted.  He lives on moonshine whiskey which is about 40% ethanol (assume a g is about an ml).  Assuming there isn't much else of nutritional value, how much would he have to drink to maintain his body weight. 0.62 L  0.82 L 0.93 L 1.44 L   (2) Assuming ethanol (C2H6O) is completely burned to CO2 and H2O, what would Slick Johnny's RQ be? 0.67 0.74 0.86 0.96