Tell what property allows you to compute `1/3 xx (6 xx 4/3) as (1/3 xx 6) xx 4/3`

Compute (8!)/(6! xx 2!)

Find the product: (-1) xx (-2) xx (-3) xx4

Find the product of: (-3) xx (-6) xx (-2) xx (-1)

Using appropriate properties find: -2/3 xx 3/5 + 5/2-3/5 xx1/6

(b) Find the sum to n terms of the series 1 xx 2 xx 3 + 2 xx 3 xx 4 + 3 xx 4 xx 5 + .. .

Name the property under multiplication used in each of the following: -4/5 xx1=1 xx -4/5

If vec a = 1/sqrt10 (3i+k) and vec b = 1/7 (2i+3j-6k) then the value of (2 vec a - vec b) . [(vec a xx vec b) xx vec a+ (vec a xx vec b) xx 2 vec b] is

Henry 's law constant for the solubility of N_(2) gas in water at 298 K is 1.0 xx 10^(5) atm . The mole fraction of N_(2) in air is 0.6 . The number of moles of N_(2) from air dissolved in 10 moles of water at 298 K and 5 atm pressure is a. 3.0 xx 10^(-4) b. 4.0 xx 10^(-5) c. 5.0 xx 10^(-4) d. 6.0 xx 10^(-6)