A sample of a metal has a mass of 27.009 g. It contains 8.257 x 1022 metal atoms. What metal is it?

Q: Explain clearly what is meant by the statement “The atomic mass of gold is 197.0 amu.”

A: “The atomic mass of gold is 197.0 amu.” The explanation of the above statement has to be given…

Q: If the molecular mass of an oxide of nitrogen is 108 and 4.02 g of N combine with 11.48 g of O, what…

A: Given, Given mass of nitrogen = 4.02 g Molar mass of nitrogen = 14.01 g/mol Given mass of oxygen =…

Q: What is the mass in grams of 3.61 x10^23 atoms of copper?     How many copper atoms are there in…

A: The atomic mass of an element is used to determine the number of moles of an element. One mole of…

Q: Carbon tetrachloride has a chlorine-to-carbon mass ratio of 11.8:1 If a sample of carbon…

A: CCl4 is carbon tetrachloride. Mass ratio of Cl:C is 11.8:1  It means 11.8 g Cl per 1 g C

Q: How many silicon atoms are there in 1.00g of silicon?

A: Given: Mass of silicon=1.00 g Mass of 1 mole of silicon=28.0855  g

Q: Suppose you have a sodium sample weighing 11.42 g. What mass of potassium would you need to have the…

A: Given, Mass of Na =11.42 g

Q: Calculate the mass, in grams, of each of the following: a. 2.4 mol of aluminum Mass %3D b. 1.60 x 10…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: How many grams of copper that consists of 1.54 x 1024 atoms of copper?

A: To convert atoms to grams,  Step I  -  Convert atoms to moles                  1 mol  = 6.022 × 1023…

Q: How much does 4.28 x 10 21 atoms of Nickel weigh?

A: We know that, one mole of any substance contains 6.022 × 1023 atoms. We can determine the weight by…

Q: How many moles of Na are there in 1.28 x1025 atoms of Na?

A:

Q: what is the mass, in grams, of 3.01 x10^23 copper atoms

A: Number of copper atoms = 3.01 × 1023  We need to determine mass of copper.

Q: 18. How many moles of gold atoms do 3.45 X 1044 gold atoms constitute?

A: We know that the number of atoms is given by below expression  number of atoms = moles X avogadro…

Q: Calculate the mass, in grams, of 262 atoms of cesium, Cs (1 mol of Cs has a mass of 132.91 g).

A: Molar mass = 132.91g I mol of Cs contains 6.022×1023atoms  Therefore mass of 6.022 × 1023 atoms =…

Q: How many grams does 1.44 x 1028 carbon atoms weigh?

A: To calculate the mass in grams for the atoms  First we have to convert the number of Atoms into…

Q: The number of copper atoms in a 3.0 g lump of copper is 2.8 x 10^22,how many electrons are pesent in…

A:

Q: What is the mass, in grams, of each of the following samples? a.) 2.75 mol of iron, Fe  b.) 0.115…

A: Mole of solid sample is calculated by below formula,

Q: What is the mass of 1.6x10^21 argon atoms?

A: Molar mass of Argon is 39.95 g/mol i.e 1 mole of argon = 39.95 g of Argon Number of atoms of Argon…

Q: What is the mass in grams of 6.022 * 1023 N atoms of mass 14.01 amu?

A: To determine the mass in grams of 6.022x1023 N atoms of mass 14.01 amu Given that: Mass of each atom…

Q: A sample of cyanic acid, HCN, contains  3.33 x 1022 atoms. a. How many moles of cyanic acid are in…

A:

Q: How many boron atoms are there in 2.00 g of boron?

A:

Q: A 2.41 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 3.30 x 102…

A: Given: Number of molecules of N2O =3.30×1022 molecules And mass of N2O sample =2.41 g

Q: What is the mass of 3.30 x 1023 atoms of silver, Ag? 25.8 g 59.1 g 85.7 g 197 g 0.549 g

A: We will use formula of mole and mass to get answer. Number of atom = 3.3×1023

Q: Calculate the number of grams of lithium in 5.44 x 1021 atoms of lithium.

A: Given,  Number of atoms of Lithium=5.44×10^21 We know, molar mass of Lithium atom=6.941g/mol Also…

Q: If the density of indium is 7.31 g/cm', how many atoms are there in a indium piece of 30 dm wide, 5…

A: Density of an element is defined as the ratio of the mass of the element to its volume.…

Q: How many grams of sulfur are there in 2.01 atoms of sulfur?

A:

Q: what is the mass, in grams, of 2.0×1023 lead atoms

A:

Q: A 67.2 g sample of a gold and palladium alloy contains 3.33*10^23 atoms.  a) What is the mass % of…

A: Given data,Mass of alloy=67.2gTotal number of atoms=3.33×1023atoms

Q: If you have 1.08 x 10^24 atoms of gold, how many grams of gold do you have?

A: 1 mole of a substance contains Avogadro's number (6.022×1023) of atoms.

Q: A 2.62 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 3.59 x 1022…

A: Given  (a)   Mass = 2.62 gram       Number of molecule of N2O  =  3.59 × 1022 molecule       Number…

Q: How many gold (Au) atoms are there in a 10. g sample of that is 50% Au by mass?  a. 6.2 x 1022 b.…

A:

Q: a. What is the mass in grams of 1.48 X atoms of krypton? grams b. How many krypton atoms are there…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: How many moles are there in 2.17 x 1023 atoms of Au?

A:

Q: O 1.98 x 1022 atoms of lead

A:

Q: How many protons are in 2.08 x 10-21 g of F?

A: Atomic weight of F = 19 Given is Mass of F= 2.08 x 10-21 g Number of moles= given mass/ molar mass…

Q: A 2.37 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 3.24 x 1022…

A: Given that : The mass of N2O sample = 2.37 g Number of molecules of N2O = 3.24 x 1022

Q: What is the mass, in grams, of 1.51 x 1018 atoms of gold present in one nanoparticle? i

A: First of all calculate the number of moes of gold constitute the given number of atom. Then…

Q: How many grams of Copper are in 9.03 x 1023 atoms of Copper (Cu)?

A: we have to calculate mass of copper in                               9.03×1023 atoms of copper…

Q: 3.97 x 10^24 molecules of NO has what mass

A:

Q: 6. What is the mass of 6.20 x 1025 atoms of sulfur?

A: We have 6.2*1025 atoms of sulphur , we have to calculate the mass of given atoms of sulphur.

Q: How many grams of Kr are there in a sample of Kr that contains 6.43 x 1023 atoms?

A: Mole is a unit of measurement. One mole of a substance is something that contains 6.022 x 1023…

Q: How many moles of lithium are there in 1.204 X 1024 lithium atoms?

A: How many moles of lithium are there in 1.204x1023lithium atoms ?

Q: How many grams are in a sheet of iron metal, Fe, containing 1.505 x 1023 atoms of Fe?

A: Mole is a SI unit which is used to measure the amount of substance present. Mole can be defined as…

Q: What is the mass of 4.50 x 1044 Cu atoms?

A: Given :- number of Cu atoms = 4.50 × 1022 atoms  To calculate :- mass of Cu (in g)

Q: A 1.98 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 2.71 x 1022…

A:

Q: A sample of aluminum foil contains 5.70 x 1023 atoms. What is the mass of the foil?

A:

Q: If the density of lead is 11.34 g/cm³, how many atoms are there in a lead piece of 2.5 cm wide, 1.00…

A: Given data: The density of lead = 11.34 g/cm3. Width of lead piece = 2.5 cm. Length of the lead…

Q: Calculate the mass, in grams , of 382 atoms of cesium, Cs (1mol of Cs has a mass of 132.91 g).

A:

Q: What is the mass, in grams, of 2.84x1023 atoms of lead?

A: Given :- number if atoms of lead = 2.84 × 1023 atoms  To calculate :- mass (in g)

Q: A 3.69 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 5.05 x 1022…

A: a.The total number of nitrogen atoms in 3.69g sample of nitrous oxide is calculated as,

Q: What is the mass of 4.91×1021 platinum atoms?

A: Given:Number of platinum atoms = 4.91×1021.Molar mass of platinum = 195.084 g/mol.