" Sample Problem Calculate (i) "4:56times10^(3)+2*62times10^(2)quad " (ii) "4*5times10^(-3)-2*6times10^(-4)

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

The average thermal energy of oxygen at a temperature of 27C (А) 6.2times10^(-21) J (В) 4.5times10^(-21) J (C) 3.5times10^(-21) J (D) 1.2times10^(-21) J

Calculate the solubility of Ca(OH)_(2) in 0.05MNaOH solution? K_(sp) = Ca(OH)_(2) = 1.3times10^(-6) (A) 4.6times10^(-3) B) 5.2times10^(-4) M C) 6.2times10^(-5) D) 3.4times10^(-6)

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)

2Litres of an aqueous solution is prepared containing initially 10^(-3) moles of MgCl_(2) and 10^(-3) moles of "NaF" .Find concentration of F^(-) ions in the solution at equlibrium. Given : Ksp [MgF_(2)] = 4times10^(-11) (A) 2times10^(-4)M (B) 4times10^(-4)M (C) 5times10^(-4)M (D) 8times10^(-4)M

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

K_(sp) of the salt AB_(2) at 298 K is 4 times 10^(-11)M . A precipitate of AB_(2) is formed when equal volumes of which of the following solutions of A^(2+) and B^(-) are mixed? A) 2 times 10^(-4)M" "A^(2+) and 2 times 10^(-4)M" "B^(-)" B) 2 times 10^(-5)M" "A^(2+) and 2 times 10^(-3)M" "B^(-) C) 2 times 10^(-2)M" "A^(2+) and 2 times 10^(-3)M" "B^(-)

solve it : (ii) (-3)/(5)times(-3)/(5)times(-3)/(5)times(-3)/(5) (iii) (-9)/(2)times(4)/(2)times(-4)/(2)times(-4)/(2)times(-4)/(2)times(-4)/(2) (iv) (-5)/(3)times(-5)/(3)times(-5)/(3)times(-5)/(3) (v) (-6)/(2)times(-6)/(2)times(-6)/(2)times(-6)/(2)times(-6)/(2)