Question

what is precipitation reaction???​

Answer 1

A precipitation reaction refers to the formation of an insoluble salt when two solutions containing soluble salts are combined. The insoluble salt that falls out of solution is known as the precipitate, hence the reaction's name.

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Answer 2

Explanation:

The 24th term of the sequence 6 ,13 , 20 , 27.

Here , a = 6 , n = 24 , d = 7

∴ Tn = a + (n – 1) d

∴ T24 = 6 + (24 – 1) 7

T24 = 6 + 23 × 7 = 6 + 161 = 167

Let the required nth term = 265

∴ 265 = 6 + ( n – 1) 7

⇒ (n – 1) 7 = 265 – 6 = 259

⇒ n – 1 =259= 377

⇒ n – 1 = 37 ⇒ n = 38

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