What is the percent abundance of the rarest of three iron isotopes

Q: E 0.379 mol of Cr

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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: How many moles are there in 2.75 x 10^24 atoms of copper?

A: we know that one mole of copper contain Avogadro's number of atoms Avogadro's number= 6.023 × 1023

Q: What is an extensive property? What is an extensive property of oxygen?

A: Extensive property is the property which depends upon the amount of matter or mass. Mass, volume,…

Q: What is the mass in grams of 4.2 x 10^22 atoms of Zn ?

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Q: * Question Completion Status: Barium oxide was synthesized form the reaction of barium and oxygen in…

A: Barium reacts with oxygen to form barium oxide. The equation for the balanced chemical reaction is…

Q: How many moles of Na are there in 1.28 x1025 atoms of Na?

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Q: How many grams of aluminum are there in 4.05 x 10²5 molecules of Al½O3?

A: Given:- number of molecules of Al2O3 = 4.05 × 1025 molecules  To calculate :- mass of Al in grams

Q: What is the mass percentage of C in codeine, C₁₈H₂₁NO₃? Provide an answer to two decimal places.

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Q: How many grams of oxygen are there in 58.0 grams of HClO2?

A: 1 molecule HClO2 has 2 atoms of oxygen. The molar mass of HClO2 is 68.46 g/mol. The molar mass of…

Q: How many moles are present in 74.3g of titanium?

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Q: 56.7 g of H,S reacts with 30.9 g of SO, according to this reaction + SO, 2H,S + So, = 35 + 2H,0 What…

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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: Total moles of magnesium

A: We have to find moles of Magnesium

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: How do I calculate the theoretical mass percent of barium in a sample of BaCl2*2H2O?

A: Generally, the %mass is determined by dividing the species mass with total mass of sample which then…

Q: How many grams of iron are there in a sample of Fe3O, which has a mass of 8.338 grams?

A: The objective of this question is to find out the amount of iron in a given sample of Fe3O4…

Q: oxygen atoms

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Q: What is the natural abundance of copper-65 (64.9278 amu)?

A: Given,65Cu 64.9278 amu63Cu 62.9296 amu

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

A: Given is the isotope of C which has a molar mass of 13 u the molar mass of a most abundant isotope…

Q: What is the mass percentage of Al in a piece of metal with 90.6 g of Al in a 162 g sample?

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Q: What is the mass of 3.50 billion billion atoms of rhenium?  (One billion billion is 1 x 10^18)

A: Given: The number of atoms of Rhenium(Re)=3.50×1018  The atomic mass of Re=186.207 u

Q: A 67.2 g sample of a gold and palladium alloy contains 3.33*10^23 atoms.  a) What is the mass % of…

A: Given data,Mass of alloy=67.2gTotal number of atoms=3.33×1023atoms

Q: How many atoms of copper are there in 0.0075 g of copper?

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Q: Iron exists in nature as a mixture of predominantly three isotopes: 54 426Fe (53.94 amu), 5626Fe…

A: It is given that Iron exists in nature as a mixture of predominantly three isotopes: 5426Fe (53.94…

Q: A sample of limestone and other soil materials was heated, and the limestone decomposed to give…

A: 1.)  To calculate mass percent we need to calculate mass of CaCO3 in sample. For this we would…

Q: How many grams of chromium(II) fluoride contain 3.80 grams of Cr2+?

A: We have to calculate number of  grams of chromium(II) fluoride contain 3.80 grams of Cr2+

Q: how many grams are in 4.46 x 10 24 atoms of carbon?

A: Number of carbon atoms present = 4.46 x 1024 Atomic mass of carbon is 12 grams Atomic mass means the…

Q: 2. What is the mass percent of iron in Fe(NO3)3 • 9H2O?

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Q: 2. Determine the number of protons contained in particle of protons having a mass of 5.019 x 10*…

A: Interpretation-  To determine the number of proton contained in the particle of proton having mass…

Q: How many atoms are there in 2.5 moles of C4H10O2?

A: To find the number of atoms in 2.5 moles of C4H10O2, we need to use Avogadro's number, which is the…

Q: What is the Average atomic mass of an unknown element given its isotopes and their abundancies…

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Q: How many atoms of O there in 24.7 grams of Al(C2H3O2)3?

A: Here structure of the compound is AlC2H3O23 Molar mass of the compound = 27+32×12+1×3+2×16gmol =…

Q: QUESTION 9 (a) In the certain hydrated salt MSO3-4H2O, the mass percentage of H2O is 44.71%.…

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Q: Metal vapor deposition is a process used to deposit a very thin layer of metal on a target…

A: Solution - According to the question - Given - Nickel (Ni) has a molar mass of 58.69 g/mol. mass of…

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

A: The ion is CH313Br+. The atomic mass of the most abundant isotope of hydrogen (H) and Bromine (Br)…

Q: What is the mass of 4.12 x 10^23 water molecules?

A: The number of water molecules is = 4.12×1023 molecules The mass of these molecules is =?

Q: How many atoms (total) are present in a 3.45 x10-2 m3 sample of Al2O3, which has a density of 3.95…

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Q: Rank the following compounds in order of increasing mass percentage of nitrogen: NO, NO₂, N₂O.

A: NO :Formula to find the % of N :% of N = (mass of N / molar mass of the compound ) X 100…