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Why is CO2 a linear molecule whereas H2O has a v-shaped geometry?

This is due to the different numbers of electrons in each molecule and VSEPR (Valence Shell Electron Repulsion) theory. This theory states that as electrons are negatively charged, the valence electrons i...

CW
91648 Views

Enzyme inhibitors are often used as antiretroviral drugs in the treatment of HIV. Describe the structure of an enzyme and suggest how antiretroviral drugs would work in the treatment of HIV.

Enzymes are globular (globe-like) proteins, meaning they exist as 3D structures. As a protein, it is composed of a chain of amino acids which is able to fold into secondary structures such as alpha-helice...

DC
Answered by Declan C. Biology tutor
3419 Views

What are genes and how do work?

Genes are the code that makes up all life on Earth. Genes are sections of the long chain-like molecule called DNA, which is found coiled up into chromosomes in the nucleus of cells. The most important par...

AD
Answered by Anna D. Biology tutor
3077 Views

Why do ionic compounds like NaCl conduct electricity when dissolved but not when they’re solid, whereas metals conduct electricity when they’re solid?

Firstly, it's important to recognise that ionic compounds and metals are two different structures. Ionic compounds consist of positively charged ions and negatively charged ions held toge...

HB
Answered by Hannah B. Chemistry tutor
40060 Views

When using cm3 as the unit for volume to calculate the concentration why must you divide the cm3 by 1000?

As I’m sure you already know, the units of concentration are mol dm-3. So before we calculate concentrations we must convert the volu...

HB
Answered by Hannah B. Chemistry tutor
23244 Views

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