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Why dose sodium oxide have a high melting point?

Sodium oxide has a formula of Na₂O. Since sodium is a metal and oxygen is a non metal, sodium oxide is an ionic species. Sodium will lose an electron to form a cation and oxygen will gain 2 ele...

Answered by • Chemistry tutor

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Describe and explain the properties of graphene

Graphene has strong covalent bonds between the carbon molecules giving graphene properties such as a high melting point and making it very strong.Due to the delocalised electrons that are free to move acr...

Answered by Harry C. • Chemistry tutor

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Explain how a buffer solution resists the pH change when an acid or alkali is added.

HA <----> H+ + OH-Acid:Adding an acid increases the concentration of H+ ions as acids are proton donors. These H+ ions react with the conjugate base, A-, to form HA and thus shift the equilibrium po...

Answered by Alexander F. • Chemistry tutor

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What are the properties of ionic compounds?

Crystalline solids at rtphigh mp and bpoften soluble in waterconduct electricity when dissolved in water or molten

Answered by Elena M. • Chemistry tutor

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A) Write a balanced equation for the reaction of Calcium metal with water B) If I react 3 g of Calcium metal, what number of moles do I have?

Reactions and trends of group 1 and 2 metals are common questions asked at GCSE- Ca + 2 H₂O ==> Ca(OH)₂ + H₂This reaction will be exothermic and happen slowly in cold w...

Answered by Willow S. • Chemistry tutor

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