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How many atoms are in 1.2 grams of Ca?
56.06 grams/ 1 mole of CaO
5.12 x 10^38 grams of He
.18 x 10^23 atoms
186.21 grams/ 1 mole of Re
Co
1.59 x 10^-8 grams
4.5 x 10^12 grams of FeO
1.8 x 10^23 atoms
You discovered an unknown metal. It is either K, Co, or Cu. 1 mole of the metal is weighed at 58.93 grams. What is the metal?
56.06 grams/ 1 mole of CaO
5.12 x 10^38 grams of He
.18 x 10^23 atoms
186.21 grams/ 1 mole of Re
Co
1.59 x 10^-8 grams
4.5 x 10^12 grams of FeO
1.8 x 10^23 atoms
A clown needs 4.5 x 10^15 particles of Helium (He). How many grams of helium does he need?
56.06 grams/ 1 mole of CaO
5.12 x 10^38 grams of He
.18 x 10^23 atoms
186.21 grams/ 1 mole of Re
Co
1.59 x 10^-8 grams
4.5 x 10^12 grams of FeO
1.8 x 10^23 atoms
What is the molar mass of Re?
56.06 grams/ 1 mole of CaO
5.12 x 10^38 grams of He
.18 x 10^23 atoms
186.21 grams/ 1 mole of Re
Co
1.59 x 10^-8 grams
4.5 x 10^12 grams of FeO
1.8 x 10^23 atoms
How many grams are in 2.4 x 10^15 atoms of Helium (He)?
56.06 grams/ 1 mole of CaO
5.12 x 10^38 grams of He
.18 x 10^23 atoms
186.21 grams/ 1 mole of Re
Co
1.59 x 10^-8 grams
4.5 x 10^12 grams of FeO
1.8 x 10^23 atoms
How many FeO particles are there in 21g of FeO?
56.06 grams/ 1 mole of CaO
5.12 x 10^38 grams of He
.18 x 10^23 atoms
186.21 grams/ 1 mole of Re
Co
1.59 x 10^-8 grams
4.5 x 10^12 grams of FeO
1.8 x 10^23 atoms
What is the molar mass of CaO?
56.06 grams/ 1 mole of CaO
5.12 x 10^38 grams of He
.18 x 10^23 atoms
186.21 grams/ 1 mole of Re
Co
1.59 x 10^-8 grams
4.5 x 10^12 grams of FeO
1.8 x 10^23 atoms
How many atoms are in 10.5 grams of Chlorine gas (Cl)?
56.06 grams/ 1 mole of CaO
5.12 x 10^38 grams of He
.18 x 10^23 atoms
186.21 grams/ 1 mole of Re
Co
1.59 x 10^-8 grams
4.5 x 10^12 grams of FeO
1.8 x 10^23 atoms
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