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2 Answers P dilip_k Aug 31, 2016 Given that #1 41xx10^22# molecules of Styrene weigh #2 44g# We can write 1 mol or #6 03xx29^23 # molecules of Styrene will weigh # (2 44xx6 023xx10^23) (1 41xx10^22)g~~104g# #"Hence molar mass of Styrene"=104g "mol"# Now dividing given percentage composition C and H with their respective atomic masses we can have #"The ratio of number of C and H atom in its "C"_8"H"_ {16}"O"_4 First figure out how much carbon there is per mole of the substance X: ( {54 5% "C"} {100%})× {176" g"} {"mol X"}= {96" g C"} {"mol X"} Then one mole of carbon is 12 grams (atomic mass), so: {96" g C"} {"mol X"}× {1" mol C"} {12"g C"}= {8" mol C"} {"mol X"} So we have "C"_8 in the formula Do the same with hydrogen: {9 09% "H"} {100%}× {176" g"} {"mol X"}= {16 Oct 26, 2015 · In ground state atoms, both the number of protons and electrons But since electrons tend to get transferred or shared when bonding with other atoms, most will just answer that the atomic number pertains to number of protons only So in ground state atoms (meaning no charges): number of protons = number of electrons Atomic number = number of protons Atomic mass = number of neutrons + number of The Carbon-12 atom is used as the basis for standard atomic weights Published values for atomic weights are actually weighted-averages of all of the isotopes, so none of them will be exactly the additive mass of a single elements components Questions and Videos on Aldol, within Organic Chemistry IIHow do you find the atomic mass of calcium? A sample of glass that has a mass of 6 0 g gives off 12 J of heat If the temperature of the sample changes by 4 0°C during this change, what is the specific heat of the glass? What is the temperature change in 224 g of water upon the absorption of 55 kJ of heat, the specific heat of water is 4 18 J The mass of a proton is #1 67*10^ (-27)# kg What is the mass of a proton in picograms? By analogy with the oxoanions of sulfur, H2TeO3 would be named? The element antimony has an atomic weight of 121 757 u and only two naturally occurring isotopes One isotope has an abundance of 57 3% and an isotopic mass of 120 904 u 0 6024 moles The formula for calculating moles is n=m M In this case, we know that the substance weighs 2 411 g, or the m variable in the formula To calculate the molar mass, in amu, of He, we can turn to the Periodic Table It says that the molar mass (also know as average atomic mass) is 4 0026 amu Now we can input these numbers into our formula n=m M n=(2 411) (4 0026) n=0 602358467 If yeet buddy against a wallMagnesium chloride has an atomic mass of 94 amu What is the mass of one mole of magnesium chloride? How do scientists use atomic spectra? How much mass is in a 3 25-mole sample of #NH_4OH#? When HCl is dissolved in qater, it can conduct electricity Write chemical equation for the for the reaction that takes places when NaOH is added in the
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