The following diagram is a representation of 20 atoms ofa fictitious element, which we will call nevadium (Nv).The red spheres are 293Nv, and the blue spheres are 295Nv.(a) Assuming that this sample is a statistically representativesample of the element, calculate the percent abundanceof each element. (b) If the mass of 293Nv is 293.15 amu andthat of 295Nv is 295.15 amu, what is the atomic weight of Nv?[Section 2.4]

Q: A mass of 145 g of a certain element is known to contain approximately 3.64 x1024 atoms. What is the…

A: Let the molecular weight of the element is M gm/mol.  Moles = weight/mol. wt.  Or, moles = 145/M  We…

Q: An element has three naturally occurring isotopes with the following masses and abundances= Isotopic…

A: Given  Isotope  Mass            Fractional abundance    19.992    ( m1 )                    0.9048 (…

Q: A fictitious element Z has an average atomic mass of 223.22 u. Element Z has two naturally occuring…

A: Given : Atomic mass of element Z = 223.22 u Mass of Isotope 1 = 224.92 u And relative abundance of…

Q: References] Given these mass numbers and number of neutrons, what is the name and symbol of each…

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Q: the atomic masses of 10B and 11 B are 10.012938 and 11.009305 amu, respectfully. The average atomic…

A:

Q: Calculate the precise mass of each ion to five significant figures. Unless otherwise indicated, use…

A: The compound considered is methylbromide cation, [CH3Br] +

Q: The natural abundance of the three stable isotopes are 90.92% isotope A (19.9924 amu), 0.3104%…

A: This question is answered by using the simple concept of calculation of average…

Q: Iron exists in nature as a mixture of predominantly three isotopes: 26Fe (53.94 amu), 56 neFe (55.93…

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Q: Cesium has 39 known isotopes ranging from mass 112 to 151. If a sample of cesium containing only…

A:

Q: Cesium has 39 known isotopes ranging from mass 112 to 151. If a sample of cesium containing only…

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Q: What is a proton ? what is a chemical?

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Q: 2. Alma, the chemistry technician, was working in the lab and discovered a potentially new element…

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Q: Silver has just two naturally occuring isotopes: 107Ag with a fractional abundance of 0.51839 and…

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Q: An unknown element X has the following isotopes: ²⁵X (80.50% abundant, mass = 25.03 amu) and ²⁷X…

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Q: Write the elemental symbol for each of the following atoms and calculate the number of neutrons:…

A: No of Proton= No of electron=No of atomic Number (a):- atomic No is 55, no of proton is 55 (b):-…

Q: Naturally occurring gallium consists of two isotopes. One of those isotopes is "Ga with an isotopic…

A: Gallium has indeed two isotopes, one of them is as you mentioned the G71a.Its isotpic mass being…

Q: 6) Copper used in electric wires comes in two flavors (isotopes): "Cu and "Cu. "Cu has an atomic…

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Q: A hypothetical element which we'll call "X", On the planet Pluto has 24 protons and either 24 or 26…

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Q: 21) Vanadium has two naturally occurring isotopes, 50V with an atomic mass of 49.9472 amu and 51v…

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Q: (a) Calculate the number of electrons in a small, electrically neutral silver pin that has a mass of…

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Q: which of the following has the highest mass 1 mol sr, 1mol Ag, 1 mol Zn.or 1 mol Cu?

A: Definition of a Mole:A mole is a unit in chemistry used to measure the amount of a substance. One…

Q: Bromine is naturally occurring as a mixture of two isotopes. One isotope has a mass of 79 amu and a…

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Q: An element's known atomic mass is 83.45amu. It exists as three isotopes: Isotope A = (mass 78.93amu;…

A: Atomic mass of an element = 83.45 amuThree isotopes of that element are A, B and C.Percentage…

Q: Metals ▼ Iron (Fe) Silver (Ag) Part A Copper (Cu) Lead (Pb) 00 Aluminum (Al) Gold (Au) Nonmetals…

A: Since you have posted multiple question, we will provide solution only for the 1st question…

Q: 1x 10 22 atoms of an element weight 1.15 gm. The atomic mass of the element is: 10 amu (b) 2.3 amu…

A: Number of atom= 3.011×1022Weight of element= 1.15 gram Mole is equal to number of atom divide by…

Q: An element, X, has the following isotopic composition: X-200, 90%; X-199, 8.0%; and X-202, 2.0%. Its…

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Q: Tinumy 190tope m There are only two naturally-occuring stable isotopes of antimony, the masses of…

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Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.