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What's the difference between an aldehyde and a ketone?

Both aldehydes and ketones contain a double bond between carbon and oxygen . Aldehydes have the double bond at the end of the molecule. That means the carbon at the end of the chain has a double bond to an o...
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Answered by Eleanor M. • Chemistry tutor
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What are polymers and why are they useful?

Polymers are large molecules made from lots of repeating units called monomers. Plastic bags, waterproof coatings on clothes and wound dressings can all be made from polymers!
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Answered by Eleanor M. • Chemistry tutor
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What is the difference between an alkene and an alkane?

Both alkanes and alkenes are hydrocarbons, which means they only contain carbon and hydrogen atoms. Alkanes are saturated hydrocarbons, which means each carbon atom is bonded to four other atoms and there ar...
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Answered by Eleanor M. • Chemistry tutor
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Explain how a buffer solution controls pH

Equilibrium: BH <--> H+ + B- alkali reacts with H+, so equilibrium shifts to right to buffer change acid reacts with B- to form BH, so equilibrium shifts to left to buffer change
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Answered by George S. • Chemistry tutor
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A student titrates 25.00 cm3 of hydrochloric acid with 28.60 cm3 sodium hydroxide solution of concentration 0.200 moles per dm3. The equation for the reaction is: HCl + NaOH to NaCl + H2O. Calculate the concentration of the hydrochloric acid.

From the equation given in the question we can see that one mole of hydrochloric acid (HCl) reacts with one mole of sodium hydroxide (NaOH). The first thing to do is to work out the number of moles of sodium...
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Answered by Hannah A. • Chemistry tutor
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