19.7 kg of gold was recovered from a smuggler. How many atoms of gold were recovered. (Molar mass of Au = 197)1006.023 × 10236.023 × 10246.023 × 1025
Question
19.7 kg of gold was recovered from a smuggler. How many atoms of gold were recovered. (Molar mass of Au = 197)1006.023 × 10236.023 × 10246.023 × 1025
Solution
To find the number of atoms in 19.7 kg of gold, we first need to convert the mass from kilograms to grams because the molar mass of gold is given in grams per mole.
-
Convert the mass from kg to g: 19.7 kg = 19,700 g
-
Use the molar mass of gold to find the number of moles: Number of moles = mass / molar mass Number of moles = 19,700 g / 197 g/mol = 100 moles
-
Use Avogadro's number to find the number of atoms: Number of atoms = number of moles * Avogadro's number Number of atoms = 100 moles * 6.023 x 10^23 atoms/mole = 6.023 x 10^25 atoms
So, the number of gold atoms recovered from the smuggler is 6.023 x 10^25.
Similar Questions
An atom of gold has 79 protons. Determine the atomic number of gold. Au679197
How many moles of gold, Au, would have the same number of atoms as 84.0 g of silver, Ag?
A piece of gold weighing 36 gm in air, weighs 34gm in water. If there is some copper impurity in gold find the amount of copper in it given specific gravity of gold is 19.3 and that of copper is 8.9
A gold nugget has a volume of 20.0 cm3 and its density is 19.3 g/cm3. What is the mass of the gold nugget?965 kg0.965 g386 g386 kgNEXT QUESTION ASK FOR HELPTURN IT IN© 1999, 2002, 2005, 2011 Glynlyon, Inc.TERMS OF USE
The molar mass of argon is 39.95 g/mole. What is the mass of a single argon atom?Group of answer choices8.441 × 10 -23 g4.157 × 10 -21 g2.406 × 10 -25 g6.634 × 10 -23 g
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.