How many protons and how many neutrons are there in a nucleus of the most common isotope of (a) silicon, 28 14Si; (b) rubidium, 85 37Rb; (c) thallium, 205 81Tl?

Q: Gallium is composed of two naturally occurring isotopes: Ga−69 (60.108%) and Ga−71. The ratio of the…

A: The elements which have the same atomic number but a different mass number are called isotopes.  For…

Q: 12. How many grams are there in 1 x 1024 molecules of BC13?

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

Q: What fraction of the a particles in Rutherford’s gold foil experiment are scattered at large angles?…

A: Given , diameter of gold atom = 2.7 Å  diameter of the nucleus = 1010-4Å

Q: If the atomic mass of an element is X, what is the mass in grams of 1.027 x 1020 atoms of the…

A: Atomic mass of element (given)=X Number of atoms present =1.027×1020 atom

Q: Explain the concept of Mass spectrometry ?

A: Spectrometry is a practical approach of spectroscopy. It is an application of spectroscopy and deals…

Q: How many protons, neutrons,and electrons are there in an atom of (a) 10 5B, (b) 36Ar, (c) 8538Sr,…

A: An atom consists of sub-atomic particles which are protons, neutrons (both present inside the…

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: a) The abundance of an isotope of silver (Ag) with mass number 109 is 48.17%. How many neutrons are…

A: Since you have asked multiple independent questions, I am going to solve only the first part as per…

Q: What is the mass, in grams, of 2.08 × 1024 aluminum (Al) atoms?

A: The question is based on mole concept. We have to determine mass of aluminium present.

Q: if the atomic symbol 13354Xe, what is the mass #, # of protons, and # of neutrons?

A: The symbol of an element is given by the expression XZA, where Z is the atomic number and A is the…

Q: How many grams of oxygen are there in 53.16 g of Ca(C2H3O2)2?

A:

Q: What is the mass in kilograms of 5.6 x 1027molecules of carbon tetraiodide?

A: Number of molecules of carbon tetraiodide (CI4) is 5.6 × 1027 One mole contains Avogadro’s number of…

Q: 234 Uranium has three common isotopes. If the abundance of *U is 0.01%, the abundance of U is 0.71%,…

A: Since you have posted multiple questions, we are entitled to answer the first only. Please repost…

Q: There are two naturally occurring isotopes of europium, 151Eu (151.0 amu) and 153EU (153.0 amu). If…

A: Given : There are 2 naturally occurring isotopes of europium. Mass of 151Eu = 151.0 amu Mass of…

Q: What is the mass of 8.3 x 10^23 molecules of ibruprofen (C13H18O2 )?

A: Given data, Number of molecules of ibruprofen =8.3x1023 It is known that, one mole of a substance…

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

A: A proton is a subatomic particle which is present in the nucleus of an atom along with the neutrons.…

Q: How many molecules are there in 1000 grams of  C12H22O11  or table sugar?

A: We have to calculate the  number of molecules in 1000 g of table sugar.

Q: The mass of a proton is 1.673 x 10-27 kg and the diameter of the nucleus of the H atom is 1.0 x 10°…

A: Given in the question, Mass of proton = 1.673 ×10-27kgDiameter of nucleus = 1.0 ×10-3 pm Radius of…

Q: How many protons are contained in a circular puddle of liquid mercury that is 6.25 inches wide and…

A: In the given question we have to calculate the number of proton contained in a circular puddle of…

Q: The radioactive nuclide with the symbol 75Se is used to measure the shape of the pancreas. What is…

A: The atomic number of Se is 34 and the mass number of this radioactive nuclide of Se is 75. Atomic…

Q: The number of subatomic particles represented by : Au*+ 197 O 79 Protons, 118 Neutrons, 79 electrons…

A: Applying formula  A=Z+n

Q: Which of the following atoms has the same number of neutrons as ⁵⁹Ni?

A: ⁶⁰Cu has the same number of neutrons as ⁵⁹Ni

Q: What is the mass in grams of 9.76 × 1012 atoms of naturally occurring potassium?

A: mass = 6.32 x 10-10 g

Q: 10. Natural rubidium is composed of the isotopes 8Rb, which has an actual mass of 84.9117 amu, and…

A:

Q: If a sample of gallium contains 1.56×104 atoms of gallium-69 and 1.02×104 atoms of gallium-71, what…

A: Given,1.56×104 atoms of gallium 69.1.02×104 atoms of gallium 71.

Q: You are exploring the universe in your spaceship, and you land on a planet that is very similar to…

A:

Q: What is the symbol for the isotope of 55 Fe that possesses 31 neutrons?

A: In isotope 55Fe there are 26 protons because the atomic number of Fe is 26, and the number of…

Q: Sort the characteristic properties of the following isotopes of nitrogen into their respective bins.

A:

Q: What is the relative atomic mass of silver given the following abundances of its 23. isotopes Ag =…

A:

Q: If a sample of silver contains 1.29×104 atoms of silver-107 and 1.20×104 atoms of silver-109, what…

A: The percentage of silver-109 in the sample can be calculated by using the formula Percentage of…

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

A:

Q: What is the mass in grams of 2.68 * 1022 atoms of uranium?

A:

Q: Calculate the number of protons neutrons and electrons in 84Kr36

A: The below points should be kept in mind always to solve this type of problem. The mass number is the…

Q: How many protons are in 2.08 x 10-21 g of F?

A: Atomic weight of F = 19 Given is Mass of F= 2.08 x 10-21 g Number of moles= given mass/ molar mass…

Q: How many protons, electrons, and neutrons, respectively, does 129Cs have?

A: Since we know that  Mass Number = Number of Protons + Number of neutrons  And  Atomic Number =…

Q: How many protons, neutrons, and electrons, respectively, are in 57Co2+?

A: Given ion,         57Co2+ ion The atomic number of cobalt is 27.

Q: There are three isotopes of an element, X-28, X-29, and X-30, with relative abundances of 92.2297%,…

A: The mass number of Silicon = 30

Q: There are two naturally occurring isotopes of europium, 151Eu(151.0 amu) and 153Eu(153.0 amu). If…

A: Given information:Two isotopes of europium, 151Eu (151.0 amu) and 153Eu (153.0 amu)Atomic mass of Eu…

Q: 6. What is the mass of 6.20 x 1025 atoms of sulfur?

A: We have 6.2*1025 atoms of sulphur , we have to calculate the mass of given atoms of sulphur.

Q: Which of the following has 61 neutrons, 47 protons, and 46 electrons? O 108 Ag+1 108Cd*1 B0Pm O…

A:

Q: What is the name of this element, and how many protons and neutrons does this isotope have in its…

A: The objective of the question is to write the name of the given element and to find the number of…

Q: Given that you had 1 mol glucose (C 6H 12O 6), what would the mole ratio of glucose to oxygen be?

A: Balance Chemical equation means number of atoms or ions should be equal in both side (reactant and…

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: How many protons, neutrons, and electrons are present in 108 47X ?

A: Given Element = X         Mass number     = 108  Atomic Number        =  47  Number of proton    =…

Q: What would be the mass, in kilograms, of a block of graphite consisting of 1.55 x 1026 carbon atoms?

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.