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Calculate the mass of the following substance: a) 2.5 x 10^23 molecules of N2

Avogrado's constant = 6.02214086 × 10²³ mol^-1 ^{2.5/6.02=0.415} ^{Ar of N = 14} ^{Mr of N2 = 28} ^{28 x 0.415=11.62}

Answered by Kishan P. • Chemistry tutor

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How do I balance redox equations in acidic reactions, without trial and error, using half equations?

Here is a summary on the steps to complete these question types.

Determin oxidation numbers 2. Figure out what is being oxidised and what is being reduced. 3. Write half equations. 4. Balanc...

Answered by Imaany K. • Chemistry tutor

1945 Views

What are the components of an atom and what are their properties?

An atoms is composed of a central NUCLEUS, with ELECTRONS occupying shells, moving around the nucleus.

The nucleus is composed of PROTONS and NEUTRONS.

The PROTON...

Answered by Axel R. • Chemistry tutor

6608 Views

How would you correctly carry out a flame test, and what colour would potassium yield, and what colour would lithium yield?

Answer First a wire loop is cleaned with diluted hydrochloric acid, which is then dipped into the sample metal or solution. This is then held over an open flame and the colour emitted is ...

Answered by Charlotte K. • Chemistry tutor

8098 Views

What are moles in Chemistry?

The moles is the amount of a substance that we are measuring, its like measuring how many coins I have in my pocket, but instead how many atoms of an element we have. We use the equation moles=mass/RMM t...

Answered by Lucy P. • Chemistry tutor

3801 Views