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Calculate the number of moles in 23.0g of CO2? ( relative atomic mass : Carbon=12, Oxygen=16)

Firstly we need to work out the molecular mass of CO₂ . There is one carbon and two oxygens so we have to add the relative atomic mass (Ar) of one carbon and two oxygens. From the quest...

Answered by Dilan B. • Chemistry tutor

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Describe, in three steps, how you would synthesise phenylethylamine (C6H5CH2CH2NH2) from methylbenzene, giving reagents and conditions for each step. For each step, state the type of reaction that occurs.

Methylbenzene (C₆H₅CH₃) can be reacted with chlorine in the presence of UV light. The type of reaction is free radical substitution, and this produces phenylchloromethane ...

Answered by James H. • Chemistry tutor

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What is electronegativity?

It is a measure of how much a neutral atom wants an electron, metals have very low electronegativity, they almost always give electrons up, whereas non-metals usually uptake electrons, so they have a high...

Answered by Margaret F. • Chemistry tutor

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Give an advantage of hard water.

Hard water tastes better.

Answered by Angus B. • Chemistry tutor

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You have 10g of Sodium Carbonate, how many moles do I have to 2dp?

Sodium Carbonate is Na₂CO₃The molecular formula mass is 2xNa + 1xC + 3xO 2x23 + 1x12 + 3x16 = 106 g/mol m = 10g Mr = 106 g/moln=m/Mrn = 10/106 = 0.09 mol

Answered by Sophie B. • Chemistry tutor

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