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531
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The species which by definition has ZERO standard molar enthalpy of formation at 298 K is
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Related Questions
Let
$f:(0,∞)R$
be given by
$f(x)=∫_{x1}te_{−(t+t1)}dt ,$
then (a)
$f(x)$
is monotonically increasing on
$[1,∞)$
(b)
$f(x)$
is monotonically decreasing on
$(0,1)$
(c)
$f(2_{x})$
is an odd function of
$x$
on
$R$
Let
$X$
be a set with exactly 5 elements and
$Y$
be a set with exactly 7 elements. If
$α$
is the number of one-one function from
$X$
to
$Y$
and
$β$
is the number of onto function from
$Y$
to
$X$
, then the value of
$5!1 (β−α)$
is _____.
In the following reaction, the major product is
Let
$f:(0,∞)→R$
be a differentiable function such that
$f_{′}(x)=2−xf(x) $
for all
$x∈(0,∞)$
and
$f(1)=1$
, then
Let
$f:RR$
be a differentiable function such that
$f(0),f(2π )=3andf_{prime}(0)=1.$
If
$g(x)=∫_{x}[f_{prime}(t)cosect−cottcosectf(t)]dtforx(0,2π ],$
then
$(lim)_{x0}g(x)=$
A box
$B_{1}$
, contains 1 white ball, 3 red balls and 2 black balls. Another box
$B_{2}$
, contains 2 white balls, 3 red balls and 4 black balls. A third box
$B_{3}$
, contains 3 white balls, 4 red balls and 5 black balls.
Match the thermodynamic processes given under column I with the expressions given under column II.
.
The circle
$C_{1}:x_{2}+y_{2}=3,$
with centre at O, intersects the parabola
$x_{2}=2y$
at the point P in the first quadrant. Let the tangent to the circle
$C_{1}$
at P touches other two circles
$C_{2}andC_{3}atR_{2}andR_{3},$
respectively. Suppose
$C_{2}andC_{3}$
have equal radii
$23 $
and centres at
$Q_{2}$
and
$Q_{3}$
respectively. If
$Q_{2}$
and
$Q_{3}$
lie on the y-axis, then (a)
$Q2Q3=12$
(b)
$R2R3=46 $
(c)area of triangle
$OR2R3$
is
$62 $
(d)area of triangle
$PQ2Q3is=42 $
Related Questions
Let
$f:(0,∞)R$
be given by
$f(x)=∫_{x1}te_{−(t+t1)}dt ,$
then (a)
$f(x)$
is monotonically increasing on
$[1,∞)$
(b)
$f(x)$
is monotonically decreasing on
$(0,1)$
(c)
$f(2_{x})$
is an odd function of
$x$
on
$R$
Let
$X$
be a set with exactly 5 elements and
$Y$
be a set with exactly 7 elements. If
$α$
is the number of one-one function from
$X$
to
$Y$
and
$β$
is the number of onto function from
$Y$
to
$X$
, then the value of
$5!1 (β−α)$
is _____.
In the following reaction, the major product is
Let
$f:(0,∞)→R$
be a differentiable function such that
$f_{′}(x)=2−xf(x) $
for all
$x∈(0,∞)$
and
$f(1)=1$
, then
Let
$f:RR$
be a differentiable function such that
$f(0),f(2π )=3andf_{prime}(0)=1.$
If
$g(x)=∫_{x}[f_{prime}(t)cosect−cottcosectf(t)]dtforx(0,2π ],$
then
$(lim)_{x0}g(x)=$
A box
$B_{1}$
, contains 1 white ball, 3 red balls and 2 black balls. Another box
$B_{2}$
, contains 2 white balls, 3 red balls and 4 black balls. A third box
$B_{3}$
, contains 3 white balls, 4 red balls and 5 black balls.
Match the thermodynamic processes given under column I with the expressions given under column II.
.
The circle
$C_{1}:x_{2}+y_{2}=3,$
with centre at O, intersects the parabola
$x_{2}=2y$
at the point P in the first quadrant. Let the tangent to the circle
$C_{1}$
at P touches other two circles
$C_{2}andC_{3}atR_{2}andR_{3},$
respectively. Suppose
$C_{2}andC_{3}$
have equal radii
$23 $
and centres at
$Q_{2}$
and
$Q_{3}$
respectively. If
$Q_{2}$
and
$Q_{3}$
lie on the y-axis, then (a)
$Q2Q3=12$
(b)
$R2R3=46 $
(c)area of triangle
$OR2R3$
is
$62 $
(d)area of triangle
$PQ2Q3is=42 $
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