JEE Main 2022 (Online) 25th June Morning Shift | Some Basic Concepts of Chemistry Question 142 | Chemistry

Number of grams of bromine that will completely react with 5.0 g of pent-1-ene is ___________ $$\times$$ 10^$$-$$2 g. (Atomic mass of Br = 80 g/mol) [Nearest Integer]

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JEE Main 2022 (Online) 24th June Morning Shift

Numerical

-1

A 0.166 g sample of an organic compound was digested with conc. H₂SO₄ and then distilled with NaOH. The ammonia gas evolved was passed through 50.0 mL of 0.5 N H₂SO₄. The used acid required 30.0 mL of 0.25 N NaOH for complete neutralization. The mass percentage of nitrogen in the organic compound is ____________.

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JEE Main 2021 (Online) 1st September Evening Shift

Numerical

-1

The number of atoms in 8g of sodium is x $$\times$$ 10²³. The value of x is ____________. (Nearest integer)

[Given : N_A = 6.02 $$\times$$ 10²³ mol^$$-$$1

Atomic mass of Na = 23.0 u]

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JEE Main 2021 (Online) 1st September Evening Shift

Numerical

-1

If 80 g of copper sulphate CuSO₄ . 5H₂O is dissolved in deionised water to make 5L of solution. The concentration of the copper sulphate solution is x $$\times$$ 10^$$-$$3 mol L^$$-$$1. The value of x is _____________.

[Atomic masses Cu : 63.54u, S : 32u, O : 16u, H : 1u]

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