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Calculation of Molecular Mass
Molecular mass is equal to sum of the atomic masses of all atoms present in one molecule of the substance.Example: H 2 OMass of H atom = 1Mass of 2H atoms = 2Mass of O atom = 16Molecular mass = 2 + 1..
Calculation of the mass of the electron
The mass of an electron (m) is determined by dividing the value of 'e' by e/m. Charge/mass (e/m) = 1.76 x 10 8 coulomb/g Charge (e) = 1.602 x 10 - 1 9 coulombs...
The mass of an electron (m) is determined by dividing the value of 'e' by e/m. Charge/mass (e/m) = 1.76 x 10 8 coulomb/g Charge (e) = 1.602 x 10 - 1 9 coulombs... The following video is on isotopes and calculating average atomic mass of various atoms. For more science and math podcasts search Papapodcasts in iTunes
A tutorial on calculating the molar mass of a compound using capsaicin as a model. The video also includes instructions for checking your molar mass calculations using an online chemical calculator.
Question : For example, how do you calculate the average atomic mass of copper if 69.17% of the copper atoms occurring in nature are Cu-63 and 30.83% are Copper-65?
Answer : relative atomic mass = sum of (percentage*mass) /100 = (69.17*63)+(30.83*65)/100 =6361.66/100 =63.6166g hope that helps. :).. More from Yahoo Answers
Answer : relative atomic mass = sum of (percentage*mass) /100 = (69.17*63)+(30.83*65)/100 =6361.66/100 =63.6166g hope that helps. :).. More from Yahoo Answers
Question : We are calculating mols for class, and we need to know atomic mass. I know that the elements themselves have the masses written in their boxes on the periodic table, but how would i calculate things such as NF3 or H2O? (that 2 is small). I need to know ASAP. Thanks!!
Answer : NF3 N has mass no. - 14 F has mass no. - 19 Therefore NF3 has atomic mass of (14 + 19*3) = 71 amu (atomic mass units) Similarly, H2O H has mass 1 amu. O has mass 16 amu. Therefore, H20 = 1*2 + 16 = 18 amu You have to add the respective mass numbers of the elements in the compounds according to the no.of atoms per molecule... More from Yahoo Answers
Answer : NF3 N has mass no. - 14 F has mass no. - 19 Therefore NF3 has atomic mass of (14 + 19*3) = 71 amu (atomic mass units) Similarly, H2O H has mass 1 amu. O has mass 16 amu. Therefore, H20 = 1*2 + 16 = 18 amu You have to add the respective mass numbers of the elements in the compounds according to the no.of atoms per molecule... More from Yahoo Answers