`(1/4)^(-10)xx(2/5)^(-10)`

Evaluate : a. 3^(2)xx10^(3) b. (-1)^(19) c. 0xx15^(5) d. ((2)/(5))^(3) e. 3^(2)xx3^(5) f. (-4)^(10)xx4^(100) g. 6^(10-:6^(5) h. (-2^(5))^(2) i. 7^(7)-:7^(5) j. 10^(5)-:10^(5) k. 11^(0)xx(-5)^(0)xx3^(0) l. (100^(0)+50^(0))xx(-25)^(0)

Simplify (i) (-4)^5 xx (-4)^(-10) (ii) 2^5 -: 2^(-6)

Prove that: (2^(1/2)\ xx\ 3^(1/3)\ xx\ 4^(1/4))/(10^(-1/5)\ xx\ 5^(3/5))\ -:(3^(4/3)\ xx\ 5^(-7/5))/(4^(-3/5)\ xx\ 6)=10

Simplify : ((-3)/2xx4/5)+(9/5xx(-10)/3)-(1/2xx3/4)

The decomposition of NH_(3) on Pt surface is a zero order reaction. If the value of rate constant is 2 xx 10^(-4)" mole liter"^(-1)" sec"^(-1) . The rate of appearance of N_(2) and H_(2) are respectively {:(" N"_(2)," H"_(2)),("(1) "1xx10^(-4)" mol l"^(-1)"sec"^(-1),3xx10^(-4)" mol"^(-1)"sec"^(-1)),("(2) "3xx10^(-4)" mol l"^(-1)"sec"^(-1),1xx10^(-4)" mol"^(-1)"sec"^(-1)),("(3) "2xx10^(-4)" mol l"^(-1)"sec"^(-1),6xx10^(-4)" mol"^(-1)"sec"^(-1)),("(4) "3xx10^(-4)" mol l"^(-1)"sec"^(-1),3xx10^(-4)" mol"^(-1)"sec"^(-1)):}

Find the value of n : (2^(3)xx5^(n+1)xx10^(2)xx5^(n-1))/(125xx5^(n-2)xx2^(7))=(25)/(4)

Simplify. (i) (25 xx t^(-4))/(5^3 xx 10 xx t^(-8)) (t != 0) (ii) (3^(-5) xx 10^(-5) xx 125)/(5^(-7) xx 6^(-5))

Evaluate : (i) ((2)/(-3)xx(5)/(4))+((5)/(9)xx(3)/(-10))

100.0mL of a saturated solution of Ag_(2)SO_(4) is added to 250.0mL of saturated solution of PbCrO_(4) . Will may precipitate form and if so what? Given K_(sp) for Ag_(2)SO_(4), Ag_(2)CrO_(4), PbCrO_(4) ,and PbSO_(4) are 1.4 xx 10^(-5), 2.4 xx 10^(-12), 2.8 xx 10^(-13) , and 1.6 xx 10^(-8) , respectively.

Simplify : (4xx10^(-2))-(2.5xx10^(-3))