The atomic mass of aluminum is 26.982u. How many alluminum atoms are in a 4.55g sample of aluminum?

Q: How many atoms are present in 1.5 moles of nickel?

A:

Q: Suppose you have a sample of sodium weighing 11.50 g. How many atoms of sodium are present in the…

A: Given,Sodium weight 11.50 gMolar mass of sodium 22.989769 g/ mole

Q: The mass of a single iridium atom is 3.19×1072² grams. How many iridium atoms would there be in 339…

A: In order to do the calculation, we need to convert the mass in mg to g using the relation: 1 g =…

Q: How many atoms are in 141 g of calcium?

A: Given:  Amount of Calcium = 141 grams  W = 141 grams  Gmw of Calcium = 40 g/mole  No. of atoms are…

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: A sample of monochloro pentaborane (9), B5H8Cl, has a mass of 20.7 g. What amount, in moles, does…

A: Chemical formula of monochloro pentaborane = B5H8Cl.Above compound contains B, H and Cl atom.

Q: How many moles of Al are there in 41.5 grams of Al?

A: Since number of moles of atom = mass of atom / Atomic mass of atom

Q: How many atoms are there in a 4.0-g copper coin?

A: Given: Mass of copper coin=4.0 g To find: Number of atoms

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

A: The question is based on mole concept. We have been given mass and number of atoms of metal. we have…

Q: lver

A: How many grams are there in 2.30x1024 atoms of silver? 1 mole of silver mass is 107.9g 1 mole…

Q: The mass of a single molybdenum atom is 1.59×1022 grams. How many molybdenum atoms would there be in…

A: Given: Mass of single molybdenum i.e. Mo atom = 1.59 X 10-22 g. And total mass of Mo sample = 110 mg…

Q: How many Mn atoms are there in 2.63 moles of Mn?

A: 1 mol consists of 6.022×1023 atoms

Q: Tin has 10 stable isotopes. The heaviest, 124Sn, makes up 5.80% of naturally occurring tin atoms.…

A: a) The number atoms of 124Sn are present in 25.0 g of naturally occurring tin is to be calculated.…

Q: How many moles of calcium atoms do you have if you have 2.85 x 1021 atoms of calcium. (The mass of…

A: The Answer to the following Question is given as:

Q: How many moles of Kr are there in a sample of Kr that contains 2.74×1024 atoms?

A: The relationship between the moles and number of atoms of any element is given by  moles = number of…

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: 8,47x102 calculate the mass ; ingram of 8,47x1022 atoms of coppER

A:

Q: How many moles of gold are there in 1.20 ounces of gold?

A: Moles of any substance can be defined as the ratio of mass of substance and the molar mass of…

Q: What percentage of the mass of a phosphorus 32 atom is contributed by its electrons, given the mass…

A: Phosphorus-32 has 15 electrons. Mass of electrons in Phosphorus-32 can be calculated as follows,…

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 fluorine atoms are there in a sample that consists of 3.73 g of silicon tetrafluoride?

A: Use  Mole=mass/molar mass  Total Atoms= atomicity×mole×6×1023

Q: Determine the mass in grams of 5.77 × 10²¹ atoms of carbon.

A:

Q: What is the mass of a mole of electrons if one electronhas a mass of 9.11 × 1 0 -28 g?

A: Because, 1 mole=6.022×1023 molecules/particles Therefore, 1 mole of electron=6.022×1023 electrons

Q: How many atoms are in 2.15 moles of gold?

A:

Q: A sample of monochloro tetraborane (10), B4H9Cl, has a mass of 14 g. What amount, in moles, does…

A:

Q: How many moles of Be are there in a sample of Be that contains 2.02×1024 atoms?

A: Mole Mole is a quantity that represents a collection of 6.022×1023 atoms or molecules. The term…

Q: How many moles of N are there in a sample of N that contains 2.75×1024 atoms?

A:

Q: A toy top has a mass of 32.0Cu. How many atoms Сu are in this spinning top, given that the average…

A: One mole of any substance consists of 6.022×1023 particles.Number of moles of any substance present…

Q: Manganese(Mn) is a transition element essential for the growth of bones. What is the mass in grams…

A: Manganese is represented by atomic symbol Mn and it is a transition element. Also, it can be said…

Q: How many atoms are there in 350 g of arsenic?

A: Number of moles = mass/molar mass  1 mol = 6.022 × 1023 atoms

Q: How many atoms are in 20.5 g of carbon-12?

A: We know that, 1 Mole = 6.023 X 10^23 Atoms / Molecules /Ions Number of moles = Given mass / Molar…

Q: Calculate the mass, in grams, of 602 atoms of cesium, Cs (1 mol of Cs has a mass of 132.91 g).

A: Given information: 602 atoms

Q: A gold ring contains 3.01 x 1023 atoms of gold, Au. How many grams of gold are in the ring?

A: The number of moles (n) of a substance is calculated by dividing its number of atoms (No) by…

Q: A 67.2-g sample of a gold and palladium alloy contains 2.49x10^23 atoms. What is the composition (by…

A:

Q: How many Ge atoms are there in 3.96 moles of Ge?

A: The formula we are going to use is Number of atoms of any element = number of moles X Avogadro's…

Q: What amount of CuSO4•5H,O, in moles, does this mass represent? mass = 1.787 g %3D X mol resubmit…

A: Given : Mass of CuSO4.5H2O = 1.787 g And molar mass of CuSO4.5H2O = 249.69 g/mol.

Q: How many moles of silicon, Si, are in 1.79 × 1024 Si atoms?

A: 1 mole of any substance consists of 6.022 x 1023 atoms. Here, it is required to calculate the number…

Q: e mass of 1.20 x 1024 molecules of CH4 is

A:

Q: A sample of ethyl mercaptan weighing 3.17 g contains 1.46 g of sulfur.  What mass percentage of this…

A: Given Mass of sample = 3.17 g Given mass of sulfur in it = 1.46 g We need to determine % of sulfur…

Q: Upon decomposition, one sample of magnesium fluoride produced 1.65 kg of magnesium and 2.58 kg of…

A:

Q: How many atoms of nitrogen are there in a sample of (4.80x10^2) grams of N2(g)?

A:

Q: How many atoms are present in 44.96 g of scandium? atoms

A: Given mass of scandium is 44.96 g Molar mass of scandium(Sc)=44.96 g/mol

Q: How many calcium atoms are in 62.8 gg of calcium?

A: Given mass of Calcium =62.8 gram  Number of calcium atom =?

Q: Upon decomposition, one sample of magnesium fluoride produces 1.65 kg of magnesium and 2.57 kg of…

A: The amount of magnesium produced on the decomposition of sample (I) of MgF2 is 1.65 kg. The amount…

Q: How many moles of boron, B,B, are in 1.69×1024 B1.69×1024 B atoms?

A: Consider the given information is as follows; Number of boron (B) atoms = 1.69×1024           Moles…

Q: How many moles of sodium, Na, are in 1.33×1024 atoms?

A:

Q: How many atoms of K are present in 195.49 grams of K?

A: relation  s/w  moles of particles & molar massn = mM  ∴ m = given massM = molar massn = molesn =…

Q: How many gold (Au) atoms are there in a 5.0 g sample of that is 50% Au by mass?

A: Answer: 7.6421 × 1021 number of gold (Au) atoms are there in a 5.0 g sample of that is 50% Au by…

Q: Suppose you have a sample of sodium weighing 14.10g. How many atoms of sodium are present in this…

A: approach to solve this type of question is - first convert the given amount into the mole. we know…

Q: What is the mass of 1.85x10^23 atoms of nitrogen?

A: Given  Number of atom of Nitrogen = 1.85 × 1023 atom  Mass of Nitrogen = ?

Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.