2 Step Conversions
How many Atoms are in 60. grams Calcium (Ca)?
What is 9.0 x 1023 atoms?
The mole mass of Sodium.
What is 22.99 g/mol?
The number of atoms contained in 5.000 moles of Zinc.
What is 3.011 x 1024 atoms?
moles x Avogadro's number = 5.000 x 6.022x1023 = 3.011x1024 atoms
Number of moles contained in 3.03 grams of silver.
What is 0.281 moles?
mass/mole mass = 3.03/107.87 = 0.281 moles
Number of moles contained in 6.02x1023 atoms.
What is 1.00 moles?
atoms/Avogadro's number
6.02x1023/6.022x1023 = 1.00 moles
What is the mass of 6.99 x 1023 atoms of potassium (K)?
What is 45.4g?
The mole mass of NaHCO3.
What is 84.01 g/mol?
NaHCO3
22.99+1.01+12.01+16.00+16.00+16.00=84.01 g/mol
The number of atoms contained in 0.330 moles of Carbon.
What is 1.99 x 1023 atoms?
moles x Avogadro's number = 0.330 x 6.022x1023 = 1.99 x 1023 atoms
Number of moles contained in 26.82 moles of nitrogen.
What is 0.9572 moles?
grams/mole mass = 26.82/28.02 = 0.9572 moles
N2=14.01+14.01=28.02
Number of moles contained in 8.2x1032 atoms of uranium
What is 1.4x109 moles?
atoms/Avogadro's number
8.2x1032/6.022x1023 = 1.4x109 moles (1,400,000,000 moles)
How many Atoms are in 2.02 grams Hydrogen (H)?
What is 12.0 x1023 atoms?
The mole mass of Na2CO3.
What is 105.99 g/mol?
Na2CO3
22.99+22.99+12.01+16.00+16.00+16.00=105.99 g/mol
Number of grams contained in 2.19 moles of sodium.
What is 50.3 grams?
moles x mole mass = 2.19 x 22.99 = 50.3
Number of atoms contained in 0.032179 grams of gold.
What is 9.839x1019 atoms?
grams/mole mass = moles
0.032179/196.97 = 1.6337x10-4 moles
moles x Avogadro's number = atoms
1.6337x10-4 x 6.022x1023 = 9.839x1019 atoms
Au = 196.97 g/mole
Number of grams contained in 3.986 x 1023 atoms of aluminum
What is 17.858 grams?
atoms/Avogadro's number = moles
3.986x1023/6.022x1023=0.6619 moles
moles x mole mass = grams
0.6618 x 26.98 = 17.858 g
Al=26.98 g/mole
How many atoms are in a 3.56 g sample of Cu?
What is 3.37 x 1022 Cu atoms?
The mole mass of glucose (C6H12O6).
What is 180.18 g/mol?
C6H12O6
(6x12.01) + (12x1.01) + (6x16.00) = 180.18 g/mol
Number of grams contained in 3.62 moles of hydrogen?
What is 7.31 grams?
moles x mole mass = 3.62 x 2.02 = 7.31 grams
Number of formula units contained in 11.08 grams of NaHCO3
What is 7.942x1022 atoms?
grams/mole mass = moles
11.08/84.01 = 1.319 moles
moles x Avogadro's number = atoms
1.319 x 6.022x1023 = 7.942x1022 atoms
NaHCO3 = 22.99+1.01+12.01+(3x16.00) = 84.01 g/mole
Number of grams contained in 2.99x1023 formula units of NaCl.
What is 29 grams?
formula units/Avogadro's number = moles
2.99x1023/6.022x1023 = 0.497 moles
moles x mole mass = grams
0.497 x 58.44 = 29.0 grams
NaCl = 22.99+35.45=58.44 g/mole
What is the mass of 7.32ｘ10¹⁵ Tin(Sn) atoms
What is 1.44ｘ10-6 Sn moles?
The mole mass of (NH4)2CO3.
What is 96.11 g/mol?
(NH4)2CO3
(2x14.01) + (8x1.01) + 12.01 + (3x16.00) = 96.11 g/mol
Number of grams contained in 3.03 moles of KOH.
What is 170. grams?
mass x mole mass = 3.03 x 56.11 = 170. grams
KOH = 39.10+16.00+1.01=56.11
Number of molecules contained in 32 grams of H2O
What is 1.1x1024 molecules?
grams/mole mass = moles
32/18.02 = 1.8 moles
moles x Avogadro's number = molecules
1.8 x 6.022x1023 = 1.1x1024 atoms
H2O = 1.01+1.01+16.00=18.02 g/mole
Number of grams contained in 3 x 1037 formula units of Fe(OH)3.
What is 5 x 1015 grams?
formula units/Avogadro's number = moles
3x1037/6.022x1023=5x1013 moles
moles x mole mass = grams
5x1013 x 106.88 = 5x1015 grams
Fe(OH)3 = 55.85+16.00+16.00+16.00+1.01+1.01+1.01= 106.88 g/mol