[" The number of unit cells in "58.5g" of "NaCl" is nearly "],[" (1) "6times10^(20)],[" (2) "3times10^(22)],[" (3) "1.5times10^(23)],[" (4) "0.5times10^(24)]

Simplify: 10^(-1)times10^(2)times10^(-3)times10^(4)times10^(-5)times10^(6)

" (f) (5^(6)times a^(7))/(5^(2)times a^(3)times(10)^(0))

3^(-5)times10^(-4)times(5^(4))/(5^(2))times6^(-5)=

Magnetic susceptibility of magnesium at 300K of temperature is 1.2times10^(-5) ,the magnetic susceptibility of magnesium at 30 K of temperature will be 1.2times10^(-3) 1.2times10^(-4) 1.2times10^(-5) 1.2times10^(4)

pH of a saturated solution of Ba(OH)_2 is 12. The value of solubility product K_(sp) " of " Ba(OH)_2 is (a) 3.3 xx 10^(-7) (b) 5.0 xx 10^(-7) (c) 4.0 xx 10^(-6) (d) 5.0 xx 10^(-6)

The rate of a certain reaction at different times is as follows {:("Time",0,10,20,30),("Rate",3.2 xx 10^(-2), 3.18 xx 10^(-2), 3.22 xx 10^(-2), 3.19 xx 10^(-2)):} The order of the reaction is

((5)/(6))times((-2)/(5)+(3)/(10))