What are the main action and reaction forces at work when a person does a push-up? a. the person pushes the ground and the ground pushes up on the person. b. the person is pushed up and the ground stays still. c. the person pushes up and the ground pulls the person back down. d. the ground pushes the person up.20 points

Which of the following statements is true about planck’s law

What is the correct lewis structure for chloroform chcl3

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.