FBISE, NCP & NBF-aligned resources for Classes 9–12

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Chemistry Chapter 6 : Topic 5

Molecular Formula Deduction

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A structural diagram shows a molecule with one carbon atom single-bonded to three hydrogen atoms and double-bonded to one oxygen atom. What is the correct molecular formula?

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A molecule consists of two carbon atoms connected by a single bond. Each carbon is bonded to three hydrogen atoms. What is its molecular formula?

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In a structural formula, a nitrogen atom is bonded to three hydrogen atoms with no charges shown. What is the molecular formula?

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A structure shows one carbon atom bonded to four hydrogen atoms by single covalent bonds. What is the correct formula?

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A molecule contains two oxygen atoms bonded together, and each oxygen is bonded to one hydrogen atom. What is the formula?

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A structural formula shows a carbon atom double-bonded to another carbon atom, and each carbon is bonded to two hydrogen atoms. What is the formula?

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A molecule contains one sulfur atom bonded to two oxygen atoms by double bonds. What is the molecular formula?

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A structure shows three carbon atoms in a chain. The first and last carbons are bonded to three hydrogens each, and the middle carbon is bonded to two hydrogens. What is the formula?

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A molecule contains a carbon atom bonded to an oxygen atom by a double bond and also bonded to a hydroxyl group (- OH). What is the formula?

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A structural diagram shows a nitrogen atom double-bonded to one oxygen and single-bonded to another oxygen. Total atoms present are one nitrogen and two oxygen atoms. What is the formula?

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A molecule consists of two carbon atoms joined by a triple bond, each carbon bonded to one hydrogen atom. What is the molecular formula?

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A structure shows one phosphorus atom bonded to three chlorine atoms. What is the formula?

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A molecule shows one carbon atom bonded to two oxygen atoms by double bonds. What is its formula?

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A structure shows four carbon atoms in a chain with single bonds only. The terminal carbons have three hydrogens each, and the middle carbons have two hydrogens each. What is the formula?

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A molecule has one nitrogen atom bonded to two hydrogen atoms and one chlorine atom. What is the molecular formula?

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A structure shows a carbon atom bonded to three hydrogens and one hydroxyl group (- OH). What is the formula?

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A molecule consists of two nitrogen atoms bonded together, each attached to two hydrogen atoms. What is the formula?

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A structure shows a central carbon atom bonded to four chlorine atoms. What is the formula?

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A molecule contains one sulfur atom bonded to four oxygen atoms, each by double bonds. What is the formula?

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A structure shows two carbon atoms connected by a double bond, and each carbon is bonded to one hydrogen and one chlorine atom. What is the formula?

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A molecule shows one oxygen atom bonded to two hydrogen atoms with single bonds. What is the formula?

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A structure shows three oxygen atoms bonded together in a chain. What is the molecular formula?

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A molecule contains two carbon atoms single bonded, with one carbon bonded to three hydrogens and the other bonded to one oxygen (double bond) and one hydrogen. What is the formula?

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A structure shows one silicon atom bonded to four hydrogen atoms. What is the formula?

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