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... is being made later on these impurities may cause the formation of siliane. Possibly blowing your test tube up. Next the crude dry mass of (among other things) silicon dioxide was mixed with equal parts by volume of magnesium powder. This was then placed into a dry test tube and coved with a small amout of just the sand made. this was to stop the magnesium from catching fire. The test tube was then heated on a high flame. SiO2 + 4Mg = Mg2Si + 2MgO The final product is a hard black mass ...
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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
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