Define the term mole in chemistry

Environmental chemistry is defined as the branch of science which deals with chemical process occurring in the environment It involves the study of origin, Transport, reaction, effect of chemical species...

(a) The mass of 1 mole of nitrogen atoms is 14g.  (b) The mass of 4 moles of aluminium atoms is (4 × 27)g = 108g  (c) The mass of 10 moles...

(a) Mass of one mole of oxygen atoms = 16g  Then, mass of 0.2 mole of oxygen atoms = 0.2 × 16g = 3.2g  (b) Mass of one mole of water molecule...

Molecular mass of CO2  = 1(C) + 2(O)  = 1(12) + 2(16)  = (1 × 12) + ( 2 × 16)  = 44 u  5 mole of CO2 = 5 × 44  = 220 gm  Molecular mass...

The mole is the amount of the substance which contains same number of particles (atoms/molecules/ formula units, etc.) as there are C-12 isotope atoms in 12 gram

(a) Fixed assets are those assets which are invested in a company for a longer time period, generally more than one year. As these assets have long term implication on the...

Let a be the first term and r be the common ratio of the G.P. ∴ a = –3 It is known that, an = arn–1 ∴ a4 = ar3 = (–3) r3 a2...

We know :- an = a +(n-1)d a (m+n) = a + (m+n-1)d (just put m+n in place of n ) --------------(1) Let the first term and common difference of the A.P....

Solution: 12 = a + 2d 106 = a + 49d So, 106-12 = 47d Or, 94 = 47d Or, d = 2 Hence, a = 8 And, n29 = 8 + 28x2 = 64

Solution: As the 7th term exceeds the 5th term by 12, so the 5th term will exceed the 3rd term by 12 as well So, n3 = 16 n5 = 28 n7 =...