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Class 11th Equilibrium

K_p for the given reaction is (36 * 10^–2atm^–1) Find out K_c (M^–1) (nearest integer).

(2NO₂ N₂O₄)

(R=0.0821 atm. L/mol. K)

(T = 300K)

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alok kumar singh

Contributor-Level 10

K_p = K_c (RT)^D^ng

36 * 10^–2 = K_c (0.0821 * 300)^–1

K_c = 0.36 * 0.0821 * 300 = 8.86 » 9

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Class 11th Physics

A ball is projected from ground at angle q with the horizontal. After t = 1 s, it is moving at 45° with the horizontal and after t = 2 second, it is moving horizontally. What is speed of projection of ball? [g = 10 m s^–2]

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alok kumar singh

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Please find the solution below:

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Class 11th Chemistry

How many of the following species have bond order = 1 and are paramagnetic as well?

$H e_{2}^{2 +}; O_{2}^{2 -}; N e_{2}^{2 +}; F_{2}; B_{2}; H_{2}; O_{2}^{2 +}$

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alok kumar singh

Contributor-Level 10

B₂ have bond order equal to 1 and also paramagnetic.

$H e_{2}^{2 +} O_{2}^{2 -} N e_{2}^{2 +} F_{2} H_{2}$ have bond order equal to 1 but are diamagnetic.

$O_{2}^{2 +}$ have bond order equal to 3.

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Class 11th Chemistry

How many of the following compounds have one lone pair in central atom?

ClF₃, XeO₃, BrF₅, XeF₄, O₃, NH₃

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alok kumar singh

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Class 11th Work, Energy and Power

A ball is projected vertically up with an initial velocity. Which of the following graph represent KE of ball?

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alok kumar singh

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Please find the solution below:

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Class 11th Structure of Atom

For Rb(37) which of the following set of quantum numbers are correct for valence electron?

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alok kumar singh

Contributor-Level 10

₃₇Rb = 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 5s¹

Last electron enters in 5s subshell

Value of quantum numbers

n = 5, l = 0, m = 0, s = $\pm \frac{1}{2}$

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Class 11th Physics

Distance travelled by a particle starting form rest and moving with an acceleration of 4/3ms^-2 in the second is

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alok kumar singh

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Please find the solution below:

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Class 11th Chemistry

xCl₂+yOH^– zCl^–+pClO^–

Balance the above reaction and find out values of x, y, z and p.

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alok kumar singh

Contributor-Level 10

After balancing change in oxidation state,

2Cl₂ $\overset{}{\to}$ 2Cl^– + 2ClO^–

Next, balance 'O' atoms,

2Cl₂ +4OH^– $\overset{}{\to}$ 2Cl^– + 2ClO^–+ 2H₂O

Simplifying to get the simplest ratios,

Cl₂ +2OH^– $\overset{}{\to}$ Cl^–+ClO^–+ H₂O

x = 1, y = 2, z = 1, p = 1

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Class 11th Chemistry

Consider the following reaction

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alok kumar singh

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Class 11th Physics

Identify the vector quantity among the following

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alok kumar singh

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Angular momentum is an axial vector along axis of rotation.

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