Question

(A:Give short answers.) Q1(Differentiate between an ion and a free radical?)Q2( What do you know about corpuscular nature of matter?) Q3(Differentiate between analytical chemistry and environmental chemistry.) Q4(What is mole? )Q5(Differentiate between empirical formula and molecular formula.)Q6( What is the number of molecules in 9.0 g of steam?) Q7(What are the molar masses of uranium -238 and uranium -235?) Q8( Why one mole of hydrogen molecules and one mole of H-atoms have different masses?)​

Answer 1

Explanation:

The key difference between free radical and ion is that the free radicals have one or more unpaired electron, but ions have paired electrons.

7.The molar mass of U-238 is 238g/mol and U-235 is 235g/mol.

8.For the same reason that a dozen pairs of socks weighs a different amount than a dozen socks. For the exact same reason- a hydrogen molecule is two hydrogen atoms bound together in a pair.

imagine! A double quantity of something weighs differently than a single quantity of something. Will the wonders of the universe never cease!