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Magnesium reacts with hydrochloric acid to form a salt. What volume of 0.2dm(-3) HCL is required to react with 4g of Magnesium? Give answer in cm(3).

First draw out the equation. Mg + HCL = MgCl 2 + H 2 Now balance this equation Mg + 2HCl = MgCl 2 + H 2 Next we need to work out the moles of Mg. We know that we have 4g and Mg has a molar mass of 24. Mass/m...
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Answered by Katie C. • Chemistry tutor
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How do you express an indirect statement in Latin?

The indirect statement is a subordinate sentence that acts as the object of the verb in the sentence that governs the indirect statement itself. As an example, we may consider the English: 'I think that Mary...
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Answered by Lucrezia S. • Latin tutor
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Outline and evaluate research into conformity (16 marks)

Zimbardo’s Stanford prison experiment is an example of individuals conforming to particular social roles. Zimbardo carried out his experiment with 21 participants, they were selected as they were seen to be ...
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Before a cell divides during the process of mitosis, it must duplicate its DNA. Describe the process of DNA replication.

DNA helicase breaks the hydrogen bonds between the two strands of the DNA helix, separating them. Each strand can then act as a template for the synthesis of new DNA. Free nucleotides can then attach to the ...
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Answered by Jen C. • Biology tutor
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Describe the process of ventilation in humans. (4 marks)

During inhalation, the intercostal muscles contract causing the rib cage to move up and out. The diaphragm also contracts and flattens. This causes the thorax to expand, increasing the volume and decreasing ...
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Answered by Ella C. • Biology tutor
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