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1,685,600,000,000,000,000,000,000 or 1.6856 septillion or 1.6856*10^24 atoms.
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Each mole would have 6.023 x 1023 atoms in it
So for 2.8 moles simply multiply the above by 2.8. You would get it easily
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How many moles are there in 5 grams of silicon dioxide?
number of moles=mass/molar mass =5/(28+32) =0.83 mol
What is the mass of 0.1 moles of silicon?
On the periodic table, sililcon (Si) has an atomic mass of about 28 grams per mole. You have 0.1 moles, so just move the decimal once to the left to get 2.8 grams of silicon.
How many hydrogen atoms are in an acyclic alkane with 13 carbon atoms?
28. Acyclic alkanes have the formula CnH(2n+2). If n is 13, 2n+2 is 28.
How many molecules are there in 11.7 grams of N?
'N' as nitrpogen exists as the molecular gas N2 Using the moles equation moles = mass /Mr moles(N2) = 11.7 / 28 = 0.417857142 Now remember the Avogadro Number. 1 mole contains 6.022 x 10^(23) atoms/molecules. Hence Multiplying 6.022 x 10^(23) X 0.417857142 = 2.516 x 10^(23) molecules. The Answer!!!!!!
Which isotopic notation identifies a metalloid that is matched with the corresponding number of protons in each of its atoms?
28^Si and 14 protonsThe metalloid Si (silicon) is correctly matched with 14 protons, because the atomic number of Si is 14.
How many moles are there in 5 grams of silicon dioxide?
number of moles=mass/molar mass =5/(28+32) =0.83 mol
How many electrons does silicon-28 have?
Silicon atoms, atomic number 14, have 14 protons in the nucleus. The neutral atom then has 14 electrons. Silicon 28 the most common isotope of silicon has 14 neutrons in the nucleus giving a mass number of 28. The atomic mass of silicon 28 relative to carbon12=12. is 27.9769265325(19)
How many electrons does silicon -28 have?
Silicon atoms, atomic number 14, have 14 protons in the nucleus. The neutral atom then has 14 electrons. Silicon 28 the most common isotope of silicon has 14 neutrons in the nucleus giving a mass number of 28. The Atomic Mass of silicon 28 relative to carbon12=12. is 27.9769265325(19)
How many atoms are in 4 moles of C2H3NO?
C2H3NO could be either methyl isocyanate or glycolonitrile. They both share this molecular formula, through their structures are different. Since there are a total of 7 atoms in one molecule of C2H3NO, 4 moles of C2H3NO would have 28 moles of atoms.
There are three isotopes of silicon silicon-28 silicon-29 and silicon-30 what are the same and which are different among the atoms of these isotopes?
they differ only in the number of neutrons.
How many atoms are there in 4H2SO4?
4H2SO4 = 4*(2(H)+1(S)+4(O)) = 4*(2+1+4) = 4*7 = 28 There are 28 atoms in 4 moles of H2SO4.
What is the mass of 0.1 moles of silicon?
On the periodic table, sililcon (Si) has an atomic mass of about 28 grams per mole. You have 0.1 moles, so just move the decimal once to the left to get 2.8 grams of silicon.
How many moles are in 1.7 times 10 to the 25th power atoms of krypton?
1 mole Kr = 6.022 x 1023 atoms 1.7 x 1025 Kr atoms x (1 mole Kr)/(6.022 x 1023 Kr atoms) = 28 moles Kr (rounded to two sig figs)
How many atoms are in 0.5 mole of Ar?
6.226 x 10^28 atoms of Nitrogen approximately mole = 6.226 X 10^28 objects Nitrogen exists as a diatomic molecule, so in 0.5 moles of diatomic nitrogen gas there are exactly 1 moles worth of molecules, therefore the number of atoms in 0.5 moles of nitrogen gas is equal to the value of the mole which is approximately 6.226 x 10 ^ 28 atoms
How many atoms of Si are in 237 g of Si?
237g / 28 gmol-1 = 8.46mol. 8.46 x (6.02x1023) = 5.09x1024 silicon atoms.
How many moles in 28 grams of CO2?
The formula for methane shows that each molecule of it contains 5 atom: 1 carbon atom and 4 hydrogen atoms. The gram molecular mass of methane is 16.04. Therefore, 28 grams of methane contains 28/16.04 moles of methane and 5 times this number, or 8.7, "moles of atoms", to the justified number of significant digits.
How many silicon atoms are there in 85.0 micrograms of silicon?
n = (8.5 x 10^-5 g) x (1 mol / 28 g) = 3.04 x 10^-6 mol N = (3.04 X 10^-6 mol) x ((6.02 x 10^23 atoms)/(1 mol)) = 1.81 x 10^18 atoms
