56. the masses and radii of the earth and moon are m,, r and m2, r2 respectively. their centres are at distance d apart. the minimum velocity with which a particle of mass m should be projected from a point midway between their centres so that it escapes to infinity is: (a) 2d (m, + m2) (b) 2 d cmt gm (m, +m2) (r, +r2) (d) 2, g (m +m,) 62. (e) 2, m,+m2)

Select the atomic models that belong to the same element

The p sub shell can hold up to 8 electrons in an atom. true or false?

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.