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A zinc chloride solution (ZnCl2) is prepared by reacting zinc carbonate with dilute hydrochloric acid, write the balanced equation for this reaction

ZnCO3 + 2HCl --> ZnCl2 + H2O + CO2 Student must be aware of the formula for a carbonate (CO3) and how to balance the equation. I leave the balancing to the end to make sure I have written the equation cor...
SD
Answered by Sam D. • Chemistry tutor
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Describe and explain the similarities and differences between the structures of diamond and graphite.

Diamond and graphite are both allotropes of carbon. This means they are both made up of carbon atoms arranged differently and exist in the same physical state. They both have a giant covalent structure.Diamo...
MG
Answered by Morgan G. • Chemistry tutor
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Potassium forms an ionic compound with sulfur.Describe what happens when two atoms of potassium react with one atom of sulfur. Give your answer in terms of electron transfer. Give the formulae of the ions formed

Since potassium is an alkali metal (first column of periodic table), it has one electron in its outer shell. Sulfur, however, has six electrons in its outer shell. In an ionic bond, electrons are donated fro...
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Answered by Reece S. • Chemistry tutor
17715 Views

What is covalent bonding?

Covalent bonding is the interaction between two non-metals. The electrons in the outer shells are shared between the atoms involved in the bonding.
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Answered by Arthiha R. • Chemistry tutor
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Bromine has an atomic number of 35 but has two stable isotopes- bromine-79 and bromine-81. Given that 51% of bromine atoms are bromine-79 and 49% are bromine-81%, work out the relative atomic mass of bromine to the nearest whole number.

What is an isotope? (To ensure the students basic understanding on isotopes) Isotopes are different atomic forms of the same element, which have same number of protons but different number of neutrons. e.g 7...
MS
Answered by Mehek S. • Chemistry tutor
21558 Views