5. Write the chemical formulae of the following chemical compounds. (i)
Sodium sulphate
(ii) Potassium nitrate
(ii) Copper(i) oxide
(iv) Sulphuric acid
(v) Zinc sulphate
(vi) Aluminium chloride
(vii) Calcium nitride
(viii) Hydrogen sulphide
(ix) Iron(iii) oxide
(x) Manganese(iv) oxide
it's urgent
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Select each correct answer. more than one answer may be correct. which of the following is a characteristic of unicellular organisms? they can possess tissues and organs. all of their functions are performed by a single cell. they are usually microscopic. each of their cells is specialized to perform a specific function.

Chen drew a diagram to compare the ways in which different organisms obtain nitrogen. which label belongs to the area marked z?

Which symbol can be used to indicate the pressure at which a chemical reaction is carried out? 25°c 2 atm pa