# How many silver atoms are there in 3.86 g of silver, calculate the number of atoms in each sample a. 18.172g Cr b. 34.782g S

Q: 1. What is the difference between carbon-13 and carbon-14? a. The number of electrons b. The number…

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Q: Average atomic masses listed by IUPAC are based on a study of experimental results. Bromine has two…

A: Average atomic mass- Naturally occurring element exists as mixture isotopes. Isotopes are with…

Q: A sample of element X has two naturally occurring isotopes. The isotope X-45 makes up 35.8% of the…

A: Isotopes are species having same atomic number but different mass number.  Given: The percentage of…

Q: Lithiu 6.941 9.10 37 Rb 47 r tals ids Be Beryllium 9012 S B M Magne 83 131 R Rall Name 12.01 An…

A: We are given: density of mercury = 13.6 g/mL weight (mass) = 26.8 grams volume =?

Q: 4. Copper is found in nature as two isotopes, 63Cu (69.0%) with a mass of 62.93 amu and 65Cu (31.0%)…

A: Average atomic mass of copper can be determined using the following equation.

Q: Bromine has two naturally occurring isotopes, Br-79 and Br-81. Given that on the planet Saturn the…

A: To determine which of the isotope is the most abundant on Saturn.

Q: In nature, the element X consists of two naturally occurring isotopes. 107X with abundance 55.84%…

A: Given : There are two naturally occurring isotopes of element X. Abundance of isotope 1 i.e 107X =…

Q: To the right is a representation of 50 atoms of a fictitious element called westmontium (Wt). The…

A: A mass spectrum is an intensity vs. m/z (mass-to-charge ratio) plot representing a chemical…

Q: 8) What kind of formular is C,H,O, consider as? A) Empirical formula B) Moleculr formula C)…

A: Protons and neutrons are present inside the nucleus and electrons are revolving around the nucleus…

Q: Variations in average atomic mass may be observed for elements obtained from different sources.…

A: Given information: Assuming Mass of boron sourced from turkey = 10.0129 amu Mass of boron obtained…

Q: Question attached

A: Given data contains, Abundance of X53 is 19.61. Mass of X53 is 52.62. Abundance of X56 is 53.91.…

Q: Which two atoms are isotopes of one another? Atom #p* # n° #e A 10 8 B 10 9 10 9. D 11 A) A-B B) B-C…

A: Given, Atom no. of protons no. of neutrons no. of electrons A 8 10 8 B 10 9 10 C 9 9 9 D…

Q: Calculate the number of atoms in each sample.a. 14.955 g Cr                                    b.…

A: Since you have posted a question with multiple sub-parts we will solve the first three for you. To…

Q: an abundance of 2.365%. What is the abundance of the first isotoper a. 4.479% b. 6.957% d. 80.913%…

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Q: Common brass is a copper and zinc alloy containing 37.0% zinc by mass and having a density of 8.48…

A: Volume of brass 115.5 cm3convert this volume of brass into mass using density(d) = 8.48 g/cm3density…

Q: "Lithium has two isotopes. Lithium-6 has an actual mass of 6.015 g/mol and lithium-7 has a mass of…

A: Given: There are two naturally occurring isotopes of lithium. Molar mass of isotope 1 i.e. lithium-6…

Q: 1. Naturally occurring chlorine that is put in pools is 75.53 percent"CI (mass = 34.969 amu) and…

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

Q: 25.  The average atomic masses of some elements may vary, depending upon the sources of their ores.…

A: Given,Actual mass of naturally occurring boron 10B, 10.0129 amu and 11B, 11.00931 amu.The actual…

Q: Naturally occurring silicon consists of three isotopes with the following isotopic masses and…

A: using the formula of average atomic mass Average atomic mass= ∑isotope given value ×abundance /100…

Q: 88) Calculate the number of atoms in each sample a) 14.955 g Cr b) 12.899 g Pt c) 39.733 g S d)…

A: Atomic mass of Cr = 55.996g/mol Atomic mass of Pt = 195.084g/mol Atomic  mass of S = 32.065 g/mol…

Q: The average atomic mass of copper is 63.546 amu. Copper consists of two naturally occurring…

A: Question 2 Atomic mass of copper can be calculated using the following formula. Natural abundance…

Q: A solid circular cone made of pure platinum (d = 21.45 g/cm3 ) has a diameter  of 2.75 cm and height…

A: Density of a substance is given by the ratio of mass to its volume. Density = MassVolume Volume of a…

Q: A 11.65 g sample of NaBr contains 22.34% Na by mass. Considering the law of constant composition…

A: Law of constant composition:It is also known as law of definite proportions.  It states that a…

Q: Copper has two naturally occurring isotopes with atomic masses of 62.9296 u (C u) and 64.9278 u…

A: When two atoms have same atomic number and different atomic mass, such atoms are called isotopes.…

Q: Incomplete Chlorine has two naturally stable isotopes: 35 CI (34.968853 amu) and 37 CI (36.965903…

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Q: 4. Copper is found in nature as two isotopes, 63Cu (69.0%) with a mass of 62.93 amu and 65Cu (31.0%)…

A: The average atomic mass of two isotopes can be calculated using the following expression:

Q: An element has three stable isotopes with masses of 27.977 amu, 28.976 amu, and 29.973 amu. The…

A: The average atomic mass of an element is calculated by considering the atomic mass of each isotope…

Q: The element silver has two naturally occurring isotopes: 109Ag and 107Ag with a mass of 106.905 amu.…

A: The mass of 109Ag is to be calculated.

Q: Two natural isotopes exist for silver. 51.83% of the atoms have a mass of 106.90509 u, and the…

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

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Q: Find the average atomic mass for Li if 7.5 % of Li atoms are 6Li with a mass of 6.015 amu and 92.5%…

A: The average atomic mass of any element is the sum of product of mass of each isotope and their…

Q: Chemists generally use the term atomic weight rather than average atomic mass. We state in the text…

A: 1. Atomic mass indicates mass of an atom. Single atom has set of protons , neutrons and electrons.…

Q: On the fictional planet Zeus, boron occurs as 55.46% of 10B (atomic mass = 10.01 u) and 44.54% of…

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Q: On earth, tin has 10 different stable isotopes. The heaviest,  124Sn makes up 5.80% of naturally…

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Q: What are the charge and mass of?:  a)  a singly ionized sodium atom, Na2+ (??????: 2311??, ????=…

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Q: mass

A: This question is related to atomic mass.

Q: A cylindrical piece of pure titanium (Ti, density=4.506 g/cm^3) has diameter d=1.15 cm and length…

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Q: 19) The fact that water is 11.2 % hydroen and 88.8 % oxygen by mass regardless of its origin is an…

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

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: Calculate the average atomic mass of oxygen. Its composition is 99.76% of atoms with a mass of 15.99…

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Q: Naturally occurring magnesium has the following isotopicabundances:

A: The atomic mass of magnesium has to be calculated. Average atomic mass of the element is calculated…

Q: 1. A solid circular cone made of pure platinum (d = 21.45 g/cm3 ) has a diameter  of 2.75 cm and…

A:

Q: True or False...and why? a.) If you change number of protons, you have isotopes of an element b.)…

A: Given: a.) If you change number of protons, you have isotopes of an element b.) If you change number…

Q: Sample of zinc contains 2,5 moles of zinc atoms. The mass of the zinc sample is.. a. 164,575g b.…

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Q: he image shows a representative sample of 5050 atoms of a fictious element, called lemonium (LeLe).…

A: Given: The atomic mass of Le-19 = 19.0134 u The atomic mass of Le-17 = 17.4629 u The atomic mass of…

Q: You have an unknown element consisting of two isotopes, one with mass 36.9659 amu (24.22%), and one…

A: Since you have posted question with multiple sub-parts, we are entitled to answer the first 3 only.…

Q: A copper wire weighs 1.312 g is 2.15 mm in diameter and 40.5 mm long. The atomic mass of copper is…

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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.