how to determine mass of a given number of atoms? how to determine the molar con
ID: 996477 • Letter: H
Question
how to determine mass of a given number of atoms?
how to determine the molar concentration of an ion in a solution?
how to balance an equation?
how to determine the empirical formula of a reactant when given masses of reactants and products.
how to determine the limiting reagent for a reaction
how to tell when a set of quantum numbers is not possible
how to determine the number of electrons that a set of quantum numbers could identify
how to calculat wavelength
how to calculate frequency
how to identify the electron configuration of an excited atom
how to identify a heat of formation equation
how to determine the electron configuration of a given ion
how to identify an atome described by a given orbital diagram
how to determine how many electrons are presnet when given a specific orbital
how to identify an ion that is isoelectronic with a given ground state atom
when given 2 solutions that are mixed in a calorimeter, how to calculate the enthalpy for one mole of a reactanct
Explanation / Answer
1)
To calculate the mass of a single atom, first look up the atomic mass for carbon from the Periodic Table.
This number, 12.01, is the mass in grams of one mole of carbon. One mole of carbon is 6.022 x 1023 atoms of carbon (Avogadro's number). This relation is then used to 'convert' a carbon atom to grams by the ratio:
mass of 1 atom / 1 atom = mass of a mole of atoms / 6.022 x 1023 atoms
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