The element helium does not technically have "moles", because its atomsdo not form any chemical bond with other helium atoms. Its formula unit is a single atom. Avogadro's Number, the number of formula units in a gram Atomic Mass, is about 6.022 X 1023. Therefore, 1.20 x 1025 atoms constitutes (1.20 X 1025)/(6.022 X 1023) or about 19.9 formula masses, to the justified number of significant digits.
120 grams of calcium contain 2,994 moles.
120 g calcium is equal to 3 moles.
120
120, 000 Kilo means thousand so....120 thousand.
Three carbon atoms can be arranged in a triangle (cyclopropane), an approximately 109 degree angle (propane), a 120 degree angle (propene), or linearly (propyne).
120 grams of calcium contain 2,994 moles.
120 g calcium is equal to 3 moles.
0,288 moles
The mole of a metal, such as sodium, is generally assumed to consist of Avogadro's Number of single atoms. The gram atomic mass of sodium is 22.9898. The number of moles in 120 grams of Na is therefore 120/22.9898, or 5.22, rounded to the justified number of significant digits.
i think its 120 (40x3)
The atomic mass of sodium, Na is 23.0 Amount of sodium = mass of sample / atomic mass = 120/23.0 = 5.22mol
0.67 moles of C6H12O6
n = 817 g x (1 mol / 120 g) = 6.81 mol
Remember moles = nass(g) / Mr ( Relative Moleculr Mass) . mass = 120 g Mr =35.5 x 2 = 71 ( Because chlorine exists as a diatomic gas Cl2). Hence moles(Cl2) = 120 /71 = 1.690
904,000,000,000,000,000,000,000 (9.04 X 10^23) Bromine atoms.
120
Moles of Ca(NO2)2=120/132=0.91 molesMolarity=0.91/0.24= 3.79M