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Chemistry
A Level

In what conditions does sodium chloride conduct electricity and why?

Electricity can be defined as a flow or motion of electric charge. If a substance can allow such flow it is said to conduct electricity. Sodium chloride is made of positively charged sodium ions and negat...

Answered by Piotr T. Chemistry tutor
34508 Views

What is the difference between structural isomers and stereoisomers?

  1. Structural isomers are compounds which have the the same molecular formula but the atoms are arranged in a different order. This can be due to a change in the carbon skeleton, the type of functi...

Answered by Parul S. Chemistry tutor
6293 Views

10cm^3 of 1M NaOH solution is mixed with 15cm^3 of 0.5M HCl, what is the resulting pH of the solution?

Step 1: Work out the moles of NaOH and HCl added into the solution 10cm^3 of 1M NaOH would mean that there is 10cm^3/1000cm^3 x 1M present, i.e. 0.01 moles 15cm^3 of 0.5M HCl would mean that there ...

Answered by Lachlan A. Chemistry tutor
8454 Views

Why do the atomic radii of the elements decrease across Period 3 from sodium to chlorine?

The atomic radius of an atom is the distance from the atom's nucleus to its outermost electron. Moving across Period 3, the number of protons in the nucleus increases - for example sodium has 11 protons, ...

Answered by Amy T. Chemistry tutor
26590 Views

What type of intermolecular forces arise between halogen molecules? Explain how they arise.

London dispersion forces. These arise because: 1. Electrons within the halogen molecule are constantly moving and at any one instant there is an uneven distribution of electrons within the molecule. 2. Th...

Answered by Charutha S. Chemistry tutor
15940 Views

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