Question

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Answer 1

1. 2×0.5×6.023×10^23 atoms of oxygen

2.The important thing to notice here is that the reaction takes place at STP conditions, which are defined as a pressure of

100 kPa

and a temperature of

0

∘

C

.

Moreover, at STP one mole of any ideal gas occupies exactly

22.7 L

- this is known as the molar volume of a gas at STP.

3.In one molecule of ammonia,we have 1 nitrogen atom and 3 hydrogen atom. Hence a total of 4 atoms, so in 6.022 * 10^23 molecules of ammonia we will have 4 * 6.022 * 10^23 number of atoms. i.e. 24.088 * 10^ 23 atoms. 1 mole of gas contains avagadro number() of molecules and weighs 17 grams.

4. 8 protons, 8 neutrons, and 8 electrons

6. 39.997 g/mol.

Hope it helps you :)

Answer 2

answer:-

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