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Explain how the structure of metals allow them to form metallic bonds.

A giant metallic lattice – the crystal lattice of metals consists of regularly arranged ions (NOT atoms) surrounded by a ' delocalised sea of electrons' that form the giant lattice. The outer electrons (–) f...
KD
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Which prepositions take the accusative?

The accusative word in a sentence is the direct object. It also appears after the use of these prepositions. für - For um - Around/for/at (time) durch - Through gegen - Against entlang - Along bis - Until oh...
GD
Answered by Georgia D. • German tutor
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Which prepositions takes the dative?

aus - From bei - At mit - With nach - To (a place) - after/past (time) seit - Since von - From zu - To gegenüber - Opposite außer - Except for
GD
Answered by Georgia D. • German tutor
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Solve algebraically: 2x - 5y = 11, 3x + 2y = 7

Here we have two simultaneous equations with two unknowns. In order to solve this, we must first elimate one of the variables. To do this we will first make the coefficient (the number before) of one of the ...
GD
Answered by Georgia D. • Maths tutor
11425 Views

Which equation of motion should I use?

There's a handy trick for choosing which of the equations of motion, or SUVAT equations, you need to use given a set of terms – let’s call it the VUAST trick. For these kinds of questions, there are always 3...
BT
Answered by Ben T. • Maths tutor
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