SSC
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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molar mass
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the volume occupied by 1 mole of a gas at standard temperature and pressure (STP); 22.4 L
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floating or sinking when compared to water
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a colorless, odorless, highly flammable gas, the chemical element of atomic number 1.
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the mass of one mole of a pure substance
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Explanation:
Detailed explanation-1: -The molar mass of a substance is defined as the mass of 1 mol of that substance, expressed in grams per mole, and is equal to the mass of 6.022 × 10 23 atoms, molecules, or formula units of that substance.
Detailed explanation-2: -The mass in grams of one mole of any pure substance is called its molar mass. The molar mass of an element is numerically equal to its atomic mass. The molar mass of any substance is the mass in grams of Avogadro’s number of representative particles of the substance. Molar mass is used to convert from moles to mass.
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