We want to find how much charge is on the electrons in a nickel coin. Follow this method. A nickel coin has a mass of about 4.2 g. Find the

Question

We want to find how much charge is on the electrons in a nickel coin. Follow this method. A nickel coin has a mass of about 4.2 g. Find the number of atoms in a nickel coin. Each mole (6.02 × 1023 atoms) has a mass of about 57.8 g. Answer in units of atoms

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Ngọc Diệp 3 months 2021-08-12T07:58:31+00:00 1 Answers 4 views 0

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    2021-08-12T07:59:56+00:00

    Answer:

    The number of atoms is N = 4.37*10^{22} \ atoms

    Explanation:

    From the question we are told that

                     The mass of coin  is m_n = 4.2g

                       Number of atom in one mole = n =6.02*10^{23} \ atoms

                       Molar mass of nickel M = 57.8g

    Now the relation to obtain the number of atom in  the  nickel coin is

                            N = \frac{Mass \ of Nickel\ coin}{Molar \ mass\ of nickel }  * No\ of\atoms \ in \ \ one\  mole\ of\ nickel

                               = \frac{4.2}{57.8}* 6.02*10^{23}

                               =4.37 *10^{22} atoms

                     

         

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