How many moles is 8.3 x 10^12 atoms or particles of Br2 urgent

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How many moles is 8.3 x 10^12 atoms or particles of Br2
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Khải Quang 4 years 2021-08-15T09:23:03+00:00 2 Answers 10 views 0

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  1. nguyetanh
    0
    2021-08-15T09:24:17+00:00
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    Explanation:

    To find the number of moles in a substance given it’s number of entities we use the formula

    n = \frac{N}{L} \\

    where n is the number of moles

    N is the number of entities

    L is the Avogadro’s constant which is

    6.02 × 10²³ entities

    We have

    n = \frac{8.3 \times {10}^{12} }{6.02 \times {10}^{23} } \\ \\ \\ \\ \: \: \: \: \: \: \: = 1.379 \times {10}^{ - 11} \: \: \: \: moles

    Hope this helps you

  2. Orla
    0
    2021-08-15T09:25:01+00:00
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    Answer:

    Nmol” redirects here. For the mathematical technique, see Method of lines.

    mole

    Unit system SI base unit

    Unit of Amount of substance

    Symbol mol

    Conversions

    1 mol in … … is equal to …

      SI base units    1000 mmol

    The mole (symbol: mol) is the unit of measurement for amount of substance in the International System of Units (SI). It is defined as exactly 6.02214076×1023 particles, which may be atoms, molecules, ions, or electrons.[1]

    The definition was adopted in November 2018 as one of the seven SI base units,[1] revising the previous definition that specified one mole as the amount of substance in 12 grams of carbon-12 (12C), an isotope of carbon.

    The number 6.02214076×1023 (the Avogadro number) was chosen so that the mass of one mole of a chemical compound in grams is numerically equal, for most practical purposes, to the average mass of one molecule of the compound in daltons. Thus, for example, one mole of water contains 6.02214076×1023 molecules, whose total mass is about 18.015 grams and the mean mass of one molecule of water is about 18.015 daltons.

    The mole is widely used in chemistry as a convenient way to express amounts of reactants and products of chemical reactions. For example, the chemical equation 2H2 + O2 → 2H2O can be interpreted to mean that for each 2 mol dihydrogen (H2) and 1 mol dioxygen (O2) that react, 2 mol of water (H2O) form. The mole may also be used to measure the amount of atoms, ions, electrons, or other entities. The concentration of a solution is commonly expressed by its molarity, defined as the amount of dissolved substance in mole(s) per unit volume of solution, for which the unit typically used is moles per litre (mol/l), commonly abbreviated M.

    The term gram-molecule (g mol) was formerly used for “mole of molecules”,[2] and gram-atom (g atom) for “mole of atoms”. For example, 1 mole of MgBr2 is 1 gram-molecule of MgBr2 but 3 gram-atoms of MgBr2.[3][4]

    Explanation:

    Concepts

    Nature of the particles

    The mole is essentially a count of particles.[5] Usually the particles counted are chemically identical entities, individually distinct. For example, a solution may contain a certain number of dissolved molecules that are more or less independent of each other. However, in a solid the constituent particles are fixed and bound in a lattice arrangement, yet they may be separable without losing their chemical identity. Thus the solid is composed of a certain number of moles of such particles. In yet other cases, such as diamond, where the entire crystal is essentially a single molecule, the mole is still used to express the number of atoms bound together, rather than a count of multiple molecules. Thus, common chemical conventions apply to the definition of the constituent particles of a substance, in other cases exact definitions may be specified. The mass of 1 mole of a substance is equal to its relative atomic or molecular mass in grams.

    i’m not able to type the balance of the answer so pls go tohttps://en.wikipedia.org/wiki/Mole_(unit)

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