An element has three isotopes, A, B, and C. Percent abundance of the isotopes A and C are 60 % and 16% percent respectively. Calculate the percent abundance of the isotope B.

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: The number of atoms in 1 dm3 of aluminum is nearly the same as the number of atoms in 1 dm3 of lead,…

A: Density of a substance is given by the ratio of mass and volume of the substance. Write the…

Q: An unknown element is a mixture of isotopes ¹²⁹X and ¹³²X. The average atomic mass of X is 130.13…

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Q: An unknown element is a mixture of isotopes 120X and 122X.  The average atomic mass is 120.70.  What…

A: Suppose percentage abundance of 122X = A percentage abundance of  120X = (100 - A) Fraction of 122X…

Q: The element antimony exists in nature as two isotopes: 121Sb has a mass of 120.9038 u and 123Sb has…

A: The average atomic mass of Sb = 121.76 u.Mass of 121Sb = 120.9038 u.Mass of 123Sb = 122.9042 u.Let…

Q: . An element has three stable isotopes with masses of 27.977 amu, 28,976 amu, and 29.973 amu. The…

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Q: 103 A neutral atom of rhodium-103 (0Rh) contains how many protons, neutrons, and electrons?

A: Given,  A neutral atom = Rhodium  (a). How many protons = ? (b). How many electrons = ? (c). How…

Q: Would it be possible to determine the percentage of oxygen in NaCIO3?

A: The given compound is = NaCIO3 The percent of oxygen in this compound is =?

Q: Two compounds of Cl and X are found to have molecular masses and % Cl, by mass, as follows: 137…

A: In first compound, Cl is 77.5 % and the total mass of the compound is 137 u. Calculate the mass of…

Q: A newly discovered element consists of only two naturally occurring isotopes. Isotope A has an…

A: Given : There are two naturally occurring isotopes of an element. Atomic mass of isotope A = 204.5…

Q: Bronze is an alloy with the following composition: Component Copper Nickel Zinc mass percentage 52.0…

A: Given  Mass percentage of Cu = 52%  Total mass of sample     = 2 gram  mass of copper              =…

Q: An unknown element is a mixture of isotopes 120X and 122X. The average atomic mass of X is 121.03…

A: ]Average atomic mass=Σ%abundance x mass of isotope100

Q: An unknown element is a mixture of isotopes ¹²⁹X and ¹³²X. The average atomic mass of X is 129.47…

A: Average atomic mass has Following formula - Average atomic mass = atomic mass of first isotope × % +…

Q: In nature, gallium (Ga) is found as two isotopes. Calculate the atomic mass of this element. 69…

A: If an element exist in two isotopes then to calculate its atomic mass, multiply all the element…

Q: How many hydrogen atoms are there in 8.75 g of C,H,NO,? Select one: a. 23 4.79x 10 b. 3.22x 1023 с.…

A: Given: Mass of C2H7NO2 = 8.75 g Molar mass of C2H7NO2 = 77.08 g/mol

Q: On another planet, the isotopes of titanium have the given natural abundances. Mass (u) Isotope 46TI…

A: Average atomic mass= (mass1×abundance1) +(mass2×abundance2) + (mass3×abundance3). Abundance of given…

Q: An element consists of two isotopes and has an average atomic weight of 85.561 a.m.u. The abundance…

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Q: Iron has three major isotopes: 54Fe (atomic mass = 53.9396 u; abundance 5.85%), 56Fe (atomic mass =…

A: Isotopes are atoms of same elements which have same atomic number but different mass number.…

Q: A made up element ey has three natural isotopes. The isotopes each have an atomic mass of 33.02…

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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: The natural abundance for element "X's" isotopes are: 19.9% 10X (10.013 amu) and 80.1% 11X…

A: Given, an element X and has two natural isotopes with abundance of19.9% of X10(10.013 amu) and 80.1%…

Q: There are three stable isotopes of silicon: 28Si, 29Si, and 30Si. Their masses and natural…

A: We have three isotopes of Si  having abundance and mass, we have to calculate the weighted average.…

Q: On another planet, the isotopes of titanium have the given natural abundances. Abundance Mass (u)…

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Q: An element consists of two isotopes. The abundance of one isotope is 95.72% and its atomic mass is…

A: From given Mass and percentage is given . So average atomic mass is determined by using the formula…

Q: The element silicon has 3 naturally occurring isotopes, 28Si (27.976927 u); 29Si (28.976495 u) and…

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Q: How many Si atoms are there in a 63.4 gram sample of elemental Si? atoms

A: Given the mass of the Si sample = 63.4 g  We have to find the number of Si atoms.  We can proceed…

Q: an unknown element is a mixture of isotopes 120X and 122X. the average atomic mass of X is…

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Q: Naturally occurring Metal with average atomic mass 88.9234 consists of two isotopes: 87M with mass…

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Q: chlorine has two different isotopes. one isotope has a mass of 35.00 amu and another has a mass of…

A: Average atomic mass of Chlorine depends on the relative abundance of the isotope present in the…

Q: The image shows a representative sample of 50 atoms of a fictious element, called lemonium (Le).…

A: The average atomic mass of an element with three isotopes is given by  Avg atomic mass =…

Q: 13. Consider the table below. What is the relative abundance of isotope A? Isotope Abundance A 65 B…

A: Abundance of A (Abd A) = 65 Abundance of B (AbdB) = 115 Abundance of C (AbdC) = 20 Total Abundance…

Q: The newly-discovered "element ~X" has 3 stable isotopes, each with the listed mass and abundance.…

A:

Q: Element R has three isotopes. The isotopes are present in 0.0825, 0.2671, and 0.6504 relative…

A: Average atomic mass: The average atomic mass of an element is the sum of the masses of its isotopes,…

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: 19. Two particles X and Y have the following composition: X: 17 protons, 18 neutrons, 17 electrons…

A: The question is based on the concept of atomic structure. there are various subatomic particles like…

Q: Element X has two naturally occurring isotopes, 20X with a mass of 19.99 amu and 22X with a mass of…

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Q: A bicycle part made of titanium, Ti, has a volume of 32 cm . Titanium has a density of 4.50 g/cm .…

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Q: A block of gold (Au) has the dimensions (I × b x h) = 0.7600 in x 8.558 mm x 1.816 cm. 1 in = 2.54…

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Q: This is the average of the atomic masses of all the different isotopes in a sample.

A: We are to discuss what the average of the atomic masses of all different isotopes of an element in a…

Q: Silicon (average atomic mass=28.0855amu) has three isotopes. Their masses are 27.9769amu,…

A: Given mass of silicon isotope = 28.0855 amu % abundance of highest isotope i.e  29.9738 amu = 2.96 %…

Q: White sand is made of silica (silicon dioxide, or SiO2), which has a density of 2.20 g/cm3. How many…

A: The question is based on mole concept. We have been given diameter of the silicon atom. we have to…

Q: The U. S. Environmental Protection Agency (EPA) sets limits on healthful levels of air pollutants.…

A: The U. S. Environmental Protection Agency (EPA) sets limits on healthful levels of air pollutants…

Q: An unknown element is a mixture of isotopes 151X and 153X. The average atomic mass of X is 151.69…

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Q: Abundance = 74.200%, Mass(u) = 45.95263 Abundance = 14.500%, Mass = 47.94795 Abundance =…

A: The atoms of same elements having identical atomic number but have different masses are termed as…

Q: On another planet, the isotopes of titanium have the given natural abundances. Mass (u) Isotope 46…

A: Average atomic mass = m1f1 + m2f2 + m3f3

Q: Consider a sample that consists of three green spheres and one blue sphere. the green mass is 3.00g…

A: Given : Mass of green spheres = 3g Mass of blue sphere = 1g

Q: Imagine that you are given information about an element X which has two naturally occuring isotopes.…

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Q: The ratio of the mass of O to the mass of N in N2O3 is 12:7. Another binary compound of nitrogen has…

A: Step 1        N2O3Mass of Oxygen in N2O3 = 16x3 =48gMass of Nitrogen in N2O3 = 14x2 = 28gMass of…

Q: How are isotopes of an element identical to one another? How are they different from one another

A: Isotopes of an element is defined as atoms of same element having different mass Number but same…

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.