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What are the half equations representing the changes of Pb2+ and Br- in the electrolysis of lead bromide?

Pb2+ + 2e- -> Pb 2Br- -> Br2 + 2e- Lead ions undergo reduction (gain of electrons) at the negative electrode to form solid lead. Bromide ions undergo oxidation (loss of electrons) at the positive el...

SF
Answered by Sophie F. Chemistry tutor
40841 Views

What observations would I expect to make if I dropped from magnesium into some hydrochloric acid? What is the balanced chemical equation?

Effervescence and the magnesium metal would dissolve. Mg + 2HCl --> MgCl2 + H2

OW
Answered by Ollie W. Chemistry tutor
3790 Views

Why did the Red Army win the Russian Civil War?

The Red Army won due to a mixture of their strengths and the Whites' incompetence. Trotsky was a great leader and had an effective military strategy - by contrast, the Whites were disorganised and had poo...

CW
Answered by Catherine W. History tutor
8257 Views

What are the trigonometric functions?

The main three trigonometric functions are the tangent (tan), sine (sin) and cosine (cos) functions. The tangent, sine and cosine of an angle is defined in terms of the ratios of the length of sides of a ...

JL
Answered by Julu L. Maths tutor
5735 Views

How does respiration occur in living cells?

Glucose is broken down using oxygen. This releases energy from the bonds of glucose. The products are carbon dioxide and water.

NV
Answered by Nastia V. Biology tutor
6141 Views

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