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Why do metals have high melting points?

Mettalic bonding involves a giant lattice of ions surrounded by a sea of electrons. A lot of energy is needed to overcome the strong bonds between these positive ions and negative electrons.

MD
Answered by Mo D. Chemistry tutor
12508 Views

Assess whether pressure groups are good for democracy.


Given that it holds substantial expertise, one consideration as to why pressure groups enhance democracy derives from the proposal of minority representation. Pressure groups are es...

BS
5358 Views

What is the difference between DNA and RNA?

-DNA (Deoxyribose nucleic acid) is a structure made up of a sugar-phosphate backbones linked to one of four chemical bases (adenine, thymine, guanine or cytosine) DNA has a double helix structure that coi...

BM
Answered by Benjamin M. Biology tutor
2196 Views

Explain how the heart muscle and the heart valves maintain a one-way flow of blood from the left atrium to the aorta

The left atrium has a higher pressure than the left ventricle due to the atrium filling with blood and contractingThis causes the atrioventricular valves (the mitral/bicuspid valve in the left side of the...

Answered by Biology tutor
14733 Views

What is the significance of Brighton as a place in Graham Greene's Brighton Rock?

Brighton Rock is the story of a struggle between good and evil. Brighton is the perfect setting for a story about good and evil, as it captures a working class vision of both heaven and hell on E...

BN
Answered by Ben N. English tutor
10386 Views

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