Which of the following represents a correct chemical formula? Name it.
Bismuth phosphate (BiPO4) represents a correct chemical formula as in Bismuth phosphate (BiPO4) both ions (Bi+3 and PO4-3) are trivalent.
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Write the chemical formula using criss-cross method:
(a) Ammonium sulphate
(b) Magnesium bicarbonate
(c) Barium nitrate
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What helps in determining the formula of an ionic compound?Together with Science
Calculate the molecular mass of ethanoic acid, CH3 COOH.
(Atomic masses: C = 12 u; H = 1 u; O = 16 u)Lakhmir Singh & Manjit Kaur - Chemistry
What rules are to be kept in mind while writing a chemical formula?Evergreen - Science
Write the symbols/formulae of two simple ions and two compound ions (or polyatomic ions).Lakhmir Singh & Manjit Kaur - Chemistry
The valencies (or charges) of some of the ions are given below:
Using this information, write down the formulae of:
(i) Sodium sulphide
(ii) Copper nitrateLakhmir Singh & Manjit Kaur - Chemistry
Calculate the molecular masses of the following compounds:
(a) Hydrogen sulphide, H2S
(b) Carbon disulphide, CS2Lakhmir Singh & Manjit Kaur - Chemistry
Calculate the molecular mass of hydrogen bromide (HBr). (Atomic masses: H = 1 u; Br = 80 u)Lakhmir Singh & Manjit Kaur - Chemistry