84) What is the mass, in grams, of each elemental sample? a) 2.3x10-3 mol Sb b) 0.0355 mol Ba c) 43.9 mol Xe d) 1.3 mol W

Q: Which describes an atom of plutonium?A. It can be divided into smaller particles that retainall the…

A: A. It can be divided into smaller particles that retainall the properties of plutonium.B. It cannot…

Q: The diameter of a US penny is 19 mm. The diameter of a silver atom, by comparison, is only 2.88 Å.…

A: The diameter of one silver atom in the units of mm is calculated as follows:

Q: Element X reacts with chlorine to form a compound with the formula of X2Cl3. This compound contains…

A: Relative atomic mass: Cl = 35.5 g/mol

Q: 2.21 Calculate the number of neutrons of 23°Pu.

A: Number of neutrons is given by the difference of mass number and atomic number.

Q: Calculate the mass, in grams, of each sample.a. 1.1 * 1023 gold atomsb. 2.82 * 1022 helium atomsc.…

A: Given data: Avogadro's number NA, 6.023×1023atoms Convert first the number of atoms to moles using…

Q: What is the mass, in grams, of each elemental sample? 2.3x10^3 mol Sb

A: Given information,           Moles of Sb is 2.3x10^3 mol Sb

Q: What if a new element, Tyserium (Ty), was discovered today and was found to (atomic mass = 331amu, %…

A:

Q: What is the amount, in moles, of each elemental sample? 0.211 g Li

A:

Q: What is the amount, in moles, of each elemental sample? 3.55 g Zn

A: The amount in moles of Zn are to be calculated. Given: Mass of Zn = 3.55 g The relation between mass…

Q: A 0.455 g sample of magnesium is allowed to burn in 2.315 g of oxygen gas. The sole product is…

A:

Q: Calculate the mass for one nitrogen atom. Note: you can choose more than one answer. 2.33 x 10-23…

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

Q: What is the mass of each sample? a. 2.75 mol of Fe b. 0.115 mol Al c. 125 mol Si d. 1 Ni atom

A: MASS- Mass is basically defined the quantity of matter in the object. It is measured in grams and…

Q: A 20.0 g sample of an element contains 4.95 x 1023 atoms. Identify the element. a) Cr b) o c) Mg d)…

A: An element is a pure material in chemistry that consists only of atoms with the same number of…

Q: Show how the mass spectrometer could be used to determine the relative atomic mass of an atom

A: Introduction: Mass spectrometer is a technique that is used to measure the mass to charge ratio of…

Q: What is the mass in grams of each elemental sample? (a) 6.64 mol W (c) 68.1 mol Xe (b) 0.581 mol Ba…

A: The molecular masses of the given elements are: a. Tungsten (W) - 183.84 g/mol b. Barium (Ba) -…

Q: The mass number of an element is equal toa. the mass of its atom’s protons and neutrons.b. the mass…

A: An atom consists of three sub-atomic particles named electron, proton and neutron. The mass of an…

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

A: To calculate the number of atoms in the sample, we must have the number of moles of the substance.…

Q: How many Se atoms are there in a 82.1 gram sample of Se ?

A:

Q: estion 19 A 20.0 g sample of an element contains 4.95 x 1023 atoms. Identify the element. O Mg O Fe…

A:

Q: Calculate the average mass, in grams, of one platinum atom.

A:

Q: The element X has two naturally occurring isotopes: X50 (relative abundance = 30.15%, mass = 50.3)…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: What is the mass, in grams, of each elemental sample? 43.9 mol Xe

A: Number of moles is given by the ratio of mass of the substance to that of the molar mass of the…

Q: What are the properties of Fluorine (F) Chlorine (Cl) Bromine (Br) Iodine (I)

A: Halogens: These are the elements that are present in the 17th group of the periodic table. The given…

Q: b. x The element's symbol is It has protons. It has neutrons. c. 20X The element's symbol is It has…

A: Given symbols are:- 12854X and 4220X AZX Here, A is atomic mass and Z is atomic number.  128…

Q: (a) chlorine-35 protons electrons neutrons (b) palladium-104 protons electrons neutrons (c)…

A: Atomic number of a atom is equal to the number of protons present in it. The number of protons are…

Q: Which atomic particles are electrically charged? (a) electrons and neutrons (b) neutrons and protons…

A: Given, Which atomic particles are electrically charged?(a) electrons and neutrons(b) neutrons and…

Q: Calculate the mass, in grams, of sample.  7.9x10^21 uranium atoms

A: GIVEN: To solve: Mass in grams of uranium atom sample=?

Q: 27. How many electrons does 207Pb+2 have? a. 80 b. 82 С. 84 d. 125 28. How many electrons does Ga+3…

A: The atomic number of an atom is the number of protons present in the atom. For a neutral atom, the…

Q: 1. Mg is a/an a. anion b. halogen C. cation d. cube e. transition metal

A: According  to our guidelines , we w9ill solve only one question if multiple question posted. please…

Q: Determine the number of subatomic particles of an atom given its mass number and

A: Either one of the thing is given atomic mass/ atomic no/ no of electron/proton/neutron or  name or…

Q: An atom has a net charge of -1. It has 18 electrons and 20 neutrons. Give: (i) The number of protons…

A: Given that, an atom has a net charge of -1. It has 18 electrons and 20 neutrons. We have to…

Q: Boron (B) has two naturally occurring isotopes: boron-10 (abundance = 19.8%, mass = 10.013 amu) and…

A: An atom consists of protons along with the neutrons which occupy the nucleus and the electrons which…

Q: Calculate the mass and charge of 1. nucleus of atomic N 2. singly ionized Na2+

A:

Q: An element has three isotopes, A, B, and C. Atomic masses and percent abundances of the three…

A: The concept is to calculate the average atomic mass of an element.The elements having same atomic…

Q: Element "X" has a mass# of 53. How many neutrons does it have if its atomic# is 27

A: According to the answering guidelines, I'm posting the solution for the first question. Kindly post…

Q: Calculate the mass, in grams, of a single platinum atom (mpt=195.08amu)

A: Atomic mass of platinum is 195.08 g/mol.

Q: What is the mass, in grams, of each elemental sample?1.3 mol W

A: Molar mass of any compound can be expounded as mass of 1 mole of a substance. One mole indicates…

Q: The radius of a Niobium atom is 143 pm(b) The mass of a single niobium atom is 1.54×10-22 g. Suppose…

A: Given here,the radius of a Niobium atom is = 143 pm1 pm = 1e-12 m1 m = 100 cmSo,Diameter of 1…

Q: Naturally occurring lithium is a mixture of 92.58% Li@7 with a mass of 7.016 amu and 7.42% Li@6 with…

A: Given - Sufficiency  of  Li-7  = 92.58% isotope  with mass =7.016 amu sufficiency  of  Li-6  isotope…

Q: How many electrons are necessary to produce a charge of -1.0 C? What is the mass of this many…

A: SOLUTION: Step 1: An electron has a charge of -1.6 ×10-19 C. The no of electrons necessary to…

Q: A certain ion X3+ contains 21 electrons and 29 neutrons Identify an ion? what is the mass number…

A: Ions are formed, when an atom gains or loses its electrons, so the ions do not have the equal number…

Q: Ammonia is a gas with a characteristic pungent odor. It is sold as a water solution for use in…

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

Q: List two elements found on the periodic table which are liquid at room temperature. (Please note…

A: The two liquid elements on the periodic table at room temperature are Mercury (Hg) and Bromine (Br).…

Q: Element Protons Neutrons Mass (atom) Carbon #protons? 12 Beryllium 4 #neutrons? element? 10…

A: For an element, the atomic number, Z, of an element is equal to the number of protons. The atomic…

Q: Bronze medals are made from an alloy composed of 93.8% copper, 5.1% tin, and 1.1% zinc (measured by…

A: Given : Mass % of copper = 93.8 % mass % of tin = 5.1 %  and mass % of Zinc = 1.1 % Assuming 100 g…

Q: Which statement is TRUE? An atom of Carbon-14 contains 6 protons, 8 neutrons, 6 electrons in its…

A:

Q: element atomic # mass # p+ е- n0 Ne 20 Na 23 28 31 207 125 277 112 17 18 6. 137 81 Rn 224 43 98

A: Filling the table

Q: An unknown element has two naturally occurring isotopes. Isotope 1 has a mass of 121.0 amu and an…

A: Following equation will be used to solve this equation,

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.