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The equilibrium $N_2\left(g\right)+O_2\left(g\right)\rightleftharpoons 2NO\left(g\right)$ is established in a reaction vessel of $2.5\text{L}$ capacity. The amounts of $N_2\text{and}{O}_2$ taken at the start were $4\text{and}6\text{moles}$, respectively, and half a mole of nitrogen was used up at equilibrium. What is the molar concentration of nitric oxide at equilibrium?

Choose the correct option:

Statement 1: The chemical symbol of carbon is C

Statement 2: The atomic number of carbon is 6

Statement 3: It is metallic in nature

Statement 4: It is a member of group 14 on the periodic table

If a substance has 58 electrons and 53 protons then find the net charge on the substance.

Why does all the water of the earth not get evaporated during hot summer days ?

Question 21

Carbon forms four covalent bonds by sharing its four valence electrons with four univalent atoms, e.g. hydrogen. After the formation of four bonds, carbon attains the electronic configuration of

(a) helium

(b) neon

(c) argon

(d) krypton

Identify X in the below equation.



$CaC{O}_3+HCl\to CaC{l}_2+X+H_{2}O$

Table salt is made from sodium and chlorine which are poisonous. Still we eat table salt without getting poisoned. Explain why

Which of the following could be used to control air pollution from automobiles?

You have connected the two electrodes of a cell, dipped in an electrolyte, with a folded paper soaked in KCl solution (salt bridge). What happens to the reaction when this salt bridge is removed?

What is the general electronic configuration of the halogens?

Which of these is a pair of isobars?

To make a saturated solution , 36 g of sodium chloride is dissolved in 100g of water at 293 K. Find its concentration at this temperature

Calculate the percentage of nitrogen in nitric acid.

Calculate the approximate temperature of 27^∘C in Kelvin.

State the location of electrons, protons and neutrons in an atom.

__________ are the nuclei of helium atoms.

The valency of carbon in ${CH}_4$ is ___

If
you could buy your dream house today what are some specific features
you would want for your house? Write them
in the bubbles below.

Coal gas is a mixture of

Which among the following molecules are example(s) of molecule formation using catenation property?

The ratio of the time periods taken by electron in $2^{nd}$ and $5^{th}$ orbits of $L{i}^{2+}$ is

A compound X is formed when carbon dioxide reacts with sodium hydroxide. The same compound is obtained when baking soda is heated. Identify X.

When salt or sugar are poured into different kinds of vessels, why do they take the shape of vessel ?

Among the following ions, the $p\pi -d\pi$ overlapping could be present in

A solid that does not dissolve in a solution is termed as:

NH₄Cl+NaOH=