One mole of silver has a mass of 107.9 grams. Approximately how many atoms of silver are present in one mole of silver
2 answers:
Answer:
6.022 × 10²³ atoms Ag
Explanation:
Silver has a molar mass of 107.87. Convert grams to moles by dividing by the molar mass.
107. 9 grams × = 1 mole Ag
Multiply by Avogrado's number (6.022 × 10²³ atoms) to find the number of atoms.
1 mole <em>Ag × </em>6.022 × 10²³ atoms<em> </em>= 6.022 × 10²³ atoms Ag
There is approximately 6.022 × 10²³ atoms of silver present in one mole of silver.
Hope that helps.
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Answer:
1.645 moles of excess reactant that is of magnesium metal are left over.
Explanation:
Moles of magnesium metal = 3.29 mol
Moles of HCl = 3.29 mol
According to recation, 2 moles of HCl reacts with 1 mol of magnesium metal, then 3.29 moles of HCl will react with :
of magnesium metal
Moles of HCl left = 3.29mol - 3.29 mol = 0
Moles of magnesium metal left = 3.29 mol - 1.645 mol = 1.645 mol
1.645 moles of excess reactant that is of magnesium metal are left over.