Determine the number of atoms in 21.0 grams of sodium, Na. (The mass of one mole of sodium is 22.99 g.)

Q: how many helium atoms are there in a helium blimp containing 536 kg of helium?

A: moles and number of atoms are related to each other by Avogadro's numberSo, one mole of every…

Q: 16.The atomic masses of * Cl (75.53 percent) and "Cl (24.47 percent) are 34.968 and 36. 956 a.m.u.,…

A: Introduction: Chlorine belongs to group 17 elements with atomic number 17 and mass 35.45 amu. Group…

Q: 200 words, explain of what are atoms composed?

A:

Q: calculate the masss of carbon in a 1-carat diamond that contains 7.56 x 10^22 atoms of carbon

A:

Q: A sample of methane, CH4 , has a mass of 77.00g. Calculate the number of methane molecules in the…

A: Mole concept: According to the mole concept, the number of methane molecules in one mole of methane…

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 miles of gold atoms do 3.45 x 10^24 gold atoms constitute

A: This problem can be solved by knowing that one mole comprises of 6.022×1023 atoms.…

Q: 2. Which compound (C12H22011 or NH,CI )contains the most total number of atoms?

A:

Q: Determine the number of atoms in 21.0 grams of vanadium, V. (The mass of one mole of vanadium is…

A:

Q: The atomic weight of bromine is 79.904, yet no atom of bromine weighs 79.904 amu. Why is this true?

A: Given : The atomic weight of bromine is 79.904, yet no atom of bromine weighs 79.904 amu.

Q: Suppose that atomic masses were based on the assignment of a mass of 12.000 g to 1 mol of carbon,…

A: SOLUTION: Step 1: One Dalton is defined as one-twelfth the mass of one mole of carbon-12 isotopes.…

Q: Sulfur forms several compounds with fluorine. Upon decomposition, sample one produces 4.45 g of…

A: Given information is:                   Sample 1 →Decomposition F(4.45grams) + S (1.25grams)…

Q: The mass of a single platinum atom is 3.24×10-22 grams. How many platinum atoms would there be in…

A: The mass of an atom is the amount of matter present in the substance. The mass of an atom remains…

Q: How many copper atoms are in a cube of copper metal measuring 1.33 cm on each edge? The density of…

A: Volume of copper cube = 1.33 cm x 1.33 cm x 1.33 cm                                            =…

Q: . Suppose you have a sample of sodium weighing 14.50 g. What mass of potassium would you need to…

A: Atomic mass of sodium=23 Atomic mass of potassium=39 Number of mole=given mass/molar mass So,…

Q: Determine the mass in grams of 7.52 x 10²1 atoms of barium. (The mass of one mole of barium is…

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

Q: Which elements make up about 99% of the mass of living things?

A: Elements are very important for the maintenance of biological life. For example sodium and potassium…

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: The Japanese symbol for an atom has been written on a piece of copper metal using 99 iron atoms.…

A: 1 mol = 6.022×1023 [Avogadro's number]  The mass of one mole of atoms of an element is known as its…

Q: Bromine has two naturally-occurring isotopes. 79Br has a mass of 78.9 amu and accounts for 58.3% of…

A:

Q: A sample of aluminum foil contains 7.50 x 1023 atoms. What is the mass of the foil?

A: Given :- no. of atoms of Al = 7.50 × 1023 atoms  To be calculated :- mass of Al foil (in g)

Q: b) Calculate the mass of oxygen in a 89.2 g sample of calcium phosphate.

A: Since you have asked for part b only, we are providing you a solution for part b of the question.…

Q: The total number of atoms in NaCI

A: The number of atom of an element in its molecules is known as atomicity. SodiumChloride or NaCl is…

Q: Determine the number of atoms in 69.0 grams of nickel, Ni. (The mass of one mole of nickel is 58.69…

A: One mole of any substance contains the avogadro's constant 6.022×1023 of molecules.

Q: The atomic masses of chlorine-35 (75.780%) and chlorine-37 (24.220%) are 34.969 amu and 36.966 amu,…

A: To calculate : average atomic mass of Cl

Q: Calculate the mass of 500. atoms of  fluorine (F). Mass =______  g

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

Q: Calculate the number of atoms there are in a sample of aluminum that with a mass of 81g

A: Given that:  Mass of Aluminium(Al) = 81g  Molar mass of Aluminium = 27g/mol So, moles of Al =…

Q: Use the conversion factor 1 amu = 1.66054 x 10-24 g to answer the questions. How many atomic mass…

A: Given: 1 amu = 1.66054×10-24 g

Q: Determine the mass in grams of 5.79 × 10²¹ atoms of barium. (The mass of one mole of barium is…

A: Given no. Of atoms of barium = 5.79 x 10²¹  1 mole of barium = 137.33 g

Q: Determine the number of atoms in 35.0 grams of nickel, Ni. (The mass of one mole of nickel is 58.69…

A: Given, Mass of Ni = 35.0g

Q: An atom of copper has a mass about four times greater than that of an atom of oxygen. What choice…

A: Mass of copper atom = 4 x mass of oxygen atom

Q: The mass of a single copper atom is 1.06×10-22 grams. How many copper atoms would there be in 177…

A: The mass of a single copper atom is 1.06×10-22 grams. How many copper atoms would there be in 177…

Q: How many helium atoms are there in a helium balloon containing (1.8x10^0) kg of helium?

A: Given :- mass of He = 1.8 × 100 kg  To calculate :- number of atoms of He  number of moles =…

Q: A sample of Ni weighs 73.6 grams. Will a sample of Ag that contains the same number of atoms weigh…

A:

Q: Calculate the approximate number of atoms in a bacterium, assuming the average mass of an atom is…

A: Given,  Average mass of an atom is 10 times the mass of hydrogen atom Calculate the approximate…

Q: The mass of a single aluminum atom is 4.48×1023 grams. How many aluminum atoms would there be in 185…

A: Given that, The mass of a single aluminum atom is 4.48×10-23grams = (4.48×10-23×103)milligrams =…

Q: Calculate the mass, in grams, of sample. 1.8x10^23 lead atoms

A:

Q: What is the mass of (2.66x10^21) platinum atoms?

A: Given, Number of Platinum atoms = 2.66×1021

Q: Determine the number of atoms in 33.0 grams of vanadium, V. (The mass of one mole of vanadium is…

A: Given is,  Mass of vanadium = 33.0 g Molar mass of Vanadium = 50.94 g/mol

Q: How many silver atoms are there in 6.74 moles of silver? You will need to divide your answer by…

A: Mole is one of the fundamental unit used to calculate the amount of substance. It is the sixth unit…

Q: What is the mass of 6.77x10^24 nitrogen atoms?

A:

Q: How Many atoms are there in 1.4532 mole of copper?

A:

Q: A piece of copper contains 6.7×108 atoms. What is the mass of the sample, in units of kilograms

A: molar mass of Cu = 63.55 g/molThis is mass of 6.022×1023 atomsuse:mass of 1 atom = molar…

Q: 2. What number of gold atoms are in one mole of gold atoms? A 196.97 ) B 6.022 x 10²3 C 79 ) D 1.66…

A: Given,  The number of gold atoms in one mole of gold atoms is:

Q: Two gaseous A and B are common hydrocarbons. Chemical analyses demonstrate that in one sample of A,…

A:

Q: What is the mass of one atom of I? 3.443 x 10 24g 6.641 x 10 23 g 2.107 x 10-22 g 4.745 x 10-22 g

A:

Q: An element X has two common isotopes: X-57 and X-59. If the average atomic mass of element X is…

A: An element has two isotopes : X-57 and X-59 Average Atomic mass = 58.876 amu

Q: How many atoms of cobalt equal a mass of 58.93g

A: Molecular mass of cobalt = 58.93   Number of moles can be shown below

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 = ?

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.