The average mass of one atom of carbon is 2.00 x 10 –23 g. How many carbon atoms are present in a 40.0 g sample of carbon?

Q: How many atoms of silver are in a bracelet that weighs 34.0 g? O 1.1 x 1023 O 1.1 x 106 O 1.9 x 1023…

A: We have to calculate the number of atoms.

Q: What is the mass, in grams, of 8.55x1021 iron atoms? O 11.9g O 0.793 g O 1.26g 55.7g

A: Given: Number of iron atoms = 8.55 × 1021 atoms.

Q: the number of copper atoms in a 3.0g lump of copper is 2.8x1022 .how many electrons present in the…

A: Number of copper atoms = 2.8 × 1022  We need to determine number of electrons present.

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: How many moles of iron are present in 3.15 x 1024 atoms of iron?

A: One mole of any substance is equal to 6.023 x 1023 units of that substance ( such as atoms, ions, or…

Q: What is the mass of a single bromine molecule, Br 2?

A: The bromine molecule is composed of two bromine atoms that are covalently bonded to one another.

Q: Calculate the mass, in grams, of 992 atoms of cesium, Cs (1 mol of Cs has a mass of 132.91 g).

A:

Q: The mass ratio of sodium to fluorine in sodium fluoride is 1.21:1. A sample of sodium fluoride…

A: After the decomposition of sodium fluoride, the mass of fluorine produced is calculated by using the…

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: 3.00 x 1023 atoms

A: Mass of Ca = 20.0 g Molar mass(MM) of Ca = 40.08 g Moles of Ca = Mass/MM     = 20.0/40.08   = 0.500…

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: Calculate the mass of 3.01 x 1025 atoms of terbium whose molar mass is 158.9 g/mol.

A: Given that, Mass of atoms=Calculate the mass of 3.01 x 1025 Molar mass of terbium= 158.9 g/mol.

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 one atom of I? O 4.745 x 10-22 g O 3.443 x 10-22 g O 6.641x 10-23 g O 2.107 x…

A:

Q: D. Calculate the mass (g) of the following samples. 25) 238 moles of lead 26) 1.54 x 10° moles of Zn…

A: Since you have posted question with multiple sub-parts, we are entitled to answer the first 3 only.…

Q: A 2.37 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 3.24 x 1044…

A: Given data,  Mass of nitrous oxide = 2.37 g  Contains 3.24 × 1022 N2O molecules

Q: How many atoms of O are found in 1.00 x 10 2 g of K 2Cr 2O 7 ?

A: Number of atoms of Oxygen present in the given compound can be calculated as -

Q: Calculate the mass, in grams, of 162 atoms of potassium, K (1 mol of K has a mass of 39.10 g).

A: Avogadro number determines the number of atoms in one mole of a substance. Its value is 6.022×1023…

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: What is the mass of 6.02 x 1023 Cu atoms?

A:

Q: Calculate the number of atoms of iodine in a 7.88×10^6 g sample of iodine.

A:

Q: Determine the mass of 3.42 X 1019 atoms of Magnesium

A: Given, atoms of Mg = 3.42 x 1019 atoms

Q: A. What is the mass in grams of 1.11 x 10^24 atoms of zinc? B.How many zinc atoms are there in 28.5…

A: We’ll calculate the mass of Zn and the number of atoms present in Zn by applying simple mole concept…

Q: What is the mass in grams of 7.33 x 1023 atoms of lead?   How many lead atoms are there in 20.1…

A:

Q: A 150.0 gram sample of a white powder contains 61.05 g of carbon, 7.65 g of hydrogen, and 81.30 g of…

A:

Q: Find the mass of 2.54 X 1023 molecules of Ca(OH)2? Use: Ca = 42.0g, H = 1.15g and O = 15.8g as…

A:

Q: Calculate the mass (in grams) of a tungsten atom. A. 1.107 x 10 - 26 B. 1.661 x 10 - 24 g C. 3.054 x…

A: Molar mass of tungsten = 183.84g/mol

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

A:

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: Calculate the number of atoms in a 8.96 X 103 g sample of lithium

A: In a sample various numbers of atoms are present. These numbers depends upon mass of sample.

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: calculate the number of atoms in 1.72 grams of barium

A:

Q: The atomic mass of titanium (Z = 22) is 47.87 amu. How many atoms are present in 45.5 g of titanium?…

A: Mole of a substance or a mole of a particles is defined as exactly 6×10^23 particles which may be…

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: The mass ratio of sodium to fluorine in sodium fluoride is 1.21:1. A sample of sodium fluoride…

A: The amount of sodium produced on decomposition of sample NaF is 28.8g. The mass ratio of sodium to…

Q: O 2.4 g of carbon-1 O 1.2 g of carbon-1

A: Given The two moles of a substance:

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

A:

Q: Calculate the number of grams in 1.5 x 10^16 atoms of sulfur

A: Since moles = number of atoms / Avogadro's number  Avogadro's number = 6.022 X 1023  And number of…

Q: Calculate the number of atoms in a 9.99 x 10 g sample of calcium.

A:

Q: 1 gram of sulfur 0.5 gram of sulfur 2 moles of suilfur 6.02 x 1023 atoms of sulfur

A: 1 mole of substance = 6.022 × 10²³ atoms Mass of 1 mole of substance is equal Molar mass of the…

Q: Calculate the mass, in grams, of 982 atoms of cesium, Cs( 1 mol of Cs has a mass of 132.91 g).

A: Concept: The mass of one mole of the atom is known as molar mass. The molar mass of cesium is 132.91…

Q: Calculate the number of atoms in a 2.33 x 10' g sample of silicon.

A: Avogadro’s number or Avogadro’s constant relates the molar mass and the physical mass of an element,…

Q: How many atoms of hydrogen are there in a sample of (9.60x10^2) grams of CH4(g)?

A: The number of moles of a substance is defined as the ratio of mass to molecular mass.  So, The…

Q: you have 13.02 x1023 atoms of nitrogen, what would you expect its mass to be?

A:

Q: If the mass of a pure silver (Ag) coin is 15 g, then how many Ag atoms are present in this coin?

A:

Q: A sample of C, H, has 4.64 x 1024 H atoms. How many carbon atoms does the sample contain? number of…

A:

Q: 1. How many moles of tungsten atoms are there in 4.8 x 1025 atoms of tungsten?

A: Since you have asked multiple question,as per our company guidelines we are supposed to answer the…

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

A:

Q: Calculate the mass, in grams, of 762 atoms of iron, Fe (1 mol of Fe has a mass of 55.85 g). 7.07 x…

A: Given : Number of atoms = 762 And atomic mass of Fe = 55.85 g/mol

Q: Find the mass of 2.45 X 1023 molecules of Ca(OH)2? Use: Ca = 42.0g, H = 1.25g and O = 15.7g as…

A:

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.