in nature, element X is found as a mixture of two isotopes, one with mass number 107 and the other with mass number 109. If the percentage of the first isotope is 1.5 times greater than that of the second isotope, then what is the percentage of the second isotope?

Q: Which of the following represents isotopes?   O (mass number 18) and O (mass number 18) O (mass…

A: Isotopes are the chemical element having same atomic number but different atomic masses.  Isobars…

Q: Stuck on this question

A: Isotopes are defined as the elements with same atomic number but different mass number. For Eg…

Q: 13. Two atoms that are different isotopes of the same element have (1) the same number of protons…

A: To complete the below statement. Statement: Two atoms that are different isotopes of the same…

Q: 5. Which of the following information can be determined from this isotope: sodium 23 L # of protons…

A: The isotope given is Sodium-23. Since the element is mentioned as sodium. Hence the atomic number of…

Q: Lithium has two stable isotopes, 6Li and 7Li. If a sample is composed of 48.0% of the lighter…

A: Average mass of an element is defined as the atomic mass of the element calculated by multiplying…

Q: There are three naturally occurring stable isotopes of magnesium: 24Mg, 25M., and 2°Mg, which have…

A: According to Q&A guidelines of Bartleby, we are supposed to answer only the first question out…

Q: Define the term Neutron-to-Proton Ratio?

A: To find: The Definition of Neutron-to-proton ratio

Q: Which of the following isotopes has the highest number of neutrons? 105 Pd 46 O 25 Si 14 41 K 19 104…

A: We know that, No. of neutron = mass number - atomic number thus,

Q: How many protons and neutrons are present in an atom of 39/19K?

A: Number of protons and neutrons in an atom of  39/19K

Q: Tritium is an isotope of hydrogen. 3 1 T. Write the balanced equation for the formation of the…

A: The atoms with the same number of protons but the different number of neutrons or mass number are…

Q: How many protons and neutrons are present in an atom of 45/21A5Sc

A: The above is isotope of Scandium.

Q: Consider a rectangular piece of printer paper that is 8.5’’ x 11’’ (’’ denotes inches). In order to…

A: Given, Dimension of paper  = 8.5’’ x 11’’ Mass number of hydrogen atom = 1

Q: an element is a mixture of two isotopes. one isotope of the element has an atomic mass of 34.96885…

A: In this question, we want to determine the Average atomic mass and after that we will Identify the…

Q: If an isotope has 90 protons, how many neutrons are required in order for it to have a stable atomic…

A: Concept-: Isotope: Isotopes are known as members of a family of an element which all have the same…

Q: uppose a new element is discovered and it has two stable isotopes. One isotope has a mass of 73.372…

A: When an element has more than one isotope, then we will take average atomic mass to calculate…

Q: Fill in the blanks. Isotope 76AS3- has: Number of protons Number of neutrons Number of electrons…

A:

Q: Question attached

A: The given isotope is C-15, which means that it has 9 neutrons. All carbon isotopes have the same…

Q: Consider the three stable isotopes of Oxygen with their respective atomic masses:         O =  16…

A: Atomic mass of an element which is shown in modern periodic table is the average atomic mass of all…

Q: Calculate the number of protons, neutrons, and electrons in 16 g of Si-28. The isotope Si-28 has a…

A: Moles of Si present = mass of Si taken / Atomic mass of Si = 16 / 27.977 = 0.572 approx  Hence the…

Q: A certain element consists of two stable isotopes. The first has an atomic mass of 106.9051 amu and…

A:

Q: One isotope has a mass of 62.9296 amu (69.17% abundance). The other isotope has a mass of 64.9278…

A:

Q: Which of the following is an isotope of Manganese - 55? A) 55Mn B) 55Fe C) 95Mo+2 D) 54Mn

A: The species of an element which differs in the mass number is said to be isotope.  Atomic number of…

Q: Which of the following hypothetical isotopes have the same mass number? Note: the number before the…

A:

Q: Element: Uranium Mass Abundance Abundance Number of Neutrons Number of Name of isotope (amu) (%)…

A:

Q: A specific isotope has 17 protons and 18 neutrons. What is the symbol for this element? 18 35.45 17C…

A:

Q: Determine the number of protons and the number of neutrons in isotope. 99Tc43

A: General representation of an element - AXZ were, X = Symbol of an element. A = Mass number. Z =…

Q: Which of the following statements concerning an 131I atom and a 131Xe atom is / are CORRECT? (1)…

A:

Q: Consider that element W has three naturally occurring isotopes with the following percent…

A: Given: Isotope with a mass number of 40 is 53.0% abundant; Isotope with a mass number of 44 is 27.0%…

Q: Which of the following particles has the greatest mass?   A. photon   B. positron   C. alpha…

A:

Q: Which pair of atoms constitutes a pair of isotopes of the same element? O ax 6' 19 19 O b. 10 20X…

A: Isotopes are the species that contains same number of electrons and protons but different number of…

Q: Calculate the atomic weight of antimony, which has two isotopes with the following properties:…

A: The atomic mass of an element is result of weighted average of masses of its corresponding…

Q: Which of the following has the greatest number of neutrons? O antimony-123 O tin-121 55 Fe 26 O the…

A: We know that ; Atomic number of element is equal to the number of protons in the element . ( Atomic…

Q: 7. In cach pair of isotopes shown, indicate which one you would expect to be radioactive and why. a)…

A: Isotope is defined as same number of proton and electron but different number of neutron. For…

Q: How many protons and neutrons are present in 118Sn4+?

A:

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: A general formula of nucleus is given as AZX2+; here A is mass number, and Z is atomic number.…

A: The protons and neutrons in the nucleus of an atom are called as nucleons. Protons are positively…

Q: An element consists of two isotopes: The first isotope has an atomic mass of 86.905 AMU and a…

A: Given,The first isotope has an atomic mass of 86.905 AMU and a percent abundance of 51.83%. The…

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

A:

Q: Calculate the atomic mass of an element Y if Y has 2 naturally occurring isotopes with the following…

A: Given Isotope Y, that has two isotope Y137 and Y129

Q: A certain element consists of two stable isotopes. The first has a mass of 138 amu and a percent…

A:

Q: A soft silvery metal has two naturally occurring isotopes: mass 84.9118, accounting for 72.15% and…

A: Answer

Q: A certain element consists of two stable isotopes. The first has a mass of 138 amu and a percent…

A: Given  Atomic mass of first isotope ( M1 )       = 138 amu  percentage natural abundance ( P1)     =…

Q: Which of the following element isotopes contains the highest number of neutrons? CI-35 O C-37 O S-34…

A: The question is based on the concept of atomic structure. we have to identify which of the given…

Q: Rank the following isotopes in order of increasing number of neutrons. carbon-12 nitrogen-14…

A: ⊙An element represented in the formateAZXA→mass NumberZ→atomicnumber(No. of Neuton=mass no(A)-atomic…

Q: Naturally occurring neon exists as three isotopes. 90.51% is Ne-20 with a mass of 19.99 amu, 0.27%…

A: Given: There are three naturally occurring isotope of Neon. Mass of isotope 1 = 19.99 amu. Abundance…

Q: A certain element consists of two stable isotopes. The first has a mass of 68.9 amu and a percent…

A:

Q: Determine the number of protons and the number of neutrons in isotope. 33P15

A:

Q: A hypothetical element Q (atomic mass: 142.61) consists of two stable isotopes: 45.3 % isotope A…

A: Relative abundance of isotope A is 0.453(45.3%) and hence, relative abundance of isotope B is 0.547…

Q: How many moles of carbon are there in a diamond weighing 2.11g

A: Mole is defined as a unit of measurement for the amount of substance in the International System of…

Q: Which contains 7 neutrons? B 13 28 Si

A:

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.