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Hydrogen chloride (HCl) has a melting point of -114.2 °C. Sodium chloride (NaCl) has a melting point of 801 °C. Explain in terms of structure and bonding why these substances have such different melting points?

Hydrogen chloride has a simple molecular structure. The atoms within the molecule are held together by strong covalent bonds. However, for simple covalent molecules to melt only the weak intermolecular f...

AJ
33928 Views

Que'est ce que tu fais pendant ton temps libre?

Pendant mon temps libre, je profite d'un éventail d'activités intéressantes. En premier, j'adore faire du jogging a la campagne, dans les champs qui entourent ma maison. Ca me permet de me changer les idé...

GM
Answered by Georgina M. French tutor
21442 Views

Mark buys a computer. A VAT of 10% is added to the price of the computer. He pays £246. What was the original price of the computer before VAT was added?

We want to find the original price of the computer.We know when 10% of the price was added to the computer it costs £264.So £264 is equal to the original price plus 10% of the original price.To find 10% o...

LS
Answered by Lisa S. Maths tutor
4618 Views

Express 56 as the product of its prime factors

2×2×2×7 - for complete method to find prime factors; could be shown on a complete factor tree.

NS
Answered by Nanditha S. Maths tutor
3146 Views

Work out the value of 81^(-1/4) (Non-Calculator)

To answer this question, we have to think about our power rules and use them to slowly simplify this complicated expression:81-1/4 = ((81)1/2)-1/2 (Because ((x)y

RP
Answered by Reece P. Maths tutor
12202 Views

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