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Potassium forms an ionic compound with sulfur. Describe what happens when two atoms of potassium reaction with one atom of sulfur (5 marks)

In this question we need to give our answer in terms of electron transfer: Electrons are transferred from potassium to sulfur. Two potassium atoms each lose one electron forming K⁺ ions. Sulfur...

Answered by Megan L. • Chemistry tutor

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Complete the gaps in this sentence: In simple distillation, the mixture is heated to make the liquid . The vapour is then cooled to make it _.

First answer: evaporateSecond answer: solidify

Answered by Sammy B. • Chemistry tutor

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Explain why rate of reaction increases when temperature increases.

the reactant particles have more energy, so they move quicker, so there are more frequent successful collisions

Answered by Israel H. • Chemistry tutor

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Why is Lithium a +1 ion and Chlorine a -1 ion?

The answer lies in how many electron there are in the outer shells of each of the elements and how many electrons they can get or give away to gain a fuller outer shell. Lithium has 1 electron in its oute...

Answered by Tutor381320 D. • Chemistry tutor

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5.00 g of copper(II) carbonate decomposes to form copper(II) oxide and carbon dioxide: CuCO3(g) → CuO(s) + CO2(g). Calculate the maximum mass of carbon dioxide that can be produced. (Mr of CuCO3 = 123.5, Mr of CO2 = 44.0)

Moles of CuCO3 (using triangle) = 5.00/123.5 = 0.0450 mol.1 mol of CuCO3 makes 1 mol of CO2, therefore 0.0450 mol of CuCO3 makes 0.0450 mol of CO2.Using the triangle, mass of CO2 = 44 x 0.0450 = 1.78 gram...

Answered by Clemmie B. • Chemistry tutor

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