Define atomic numberand mass number.Which can varywithout changing the identity of the element?

Q: 3) Titanium has five common isotopes: "Ti (8.0%), **Ti (7.8%), **Ti (73.4%), 49Ti (5.5%), 50 Ti…

A: Average atomic mass of an atom can be calculated asAAM=100ma​×abundancea​+mb​×abundanceb​+....​ We…

Q: What is the mass of 5.10*10^21 platinum atoms?

A: A mole represents 6.022x1023 particlesThe 6.022x1023 Number is also known as Avogdro's Number .It…

Q: How many atoms are contained in a titanium sphere having a diameter of 4.00 mm? The density of…

A: Given : density of titanium = 4.506 g/cm3  And diameter of sphere = 4.00 mm  Since 1 cm = 10 mm…

Q: Explain the difference between Z (the atomic number) and A (the mass number)?

A: Concept introduction: Atomic number and mass number are the basic properties of element. An atom…

Q: On another planet, the isotopes of titanium have the given natural abundances. Isotope Abundance…

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

Q: A mass of 41.6 g of an element is known to contain 6.59 x 1023 atoms. What is the atomic mass of the…

A:

Q: Write definitions of the terms atomic number and mass number. Which of these can vary without…

A: Atomic number :-  Atomic number is the number of a chemical element in the periodic system, whereby…

Q: What is the mass of 4.97×1021 platinum atoms?

A: Mass has many units. Its SI unit is Kg. On atomic level, atomic mass unit, molar mass, molecular…

Q: Calculate the atomic mass of the element: Mass                Abundance 22.1760             45.00%…

A:

Q: Carbon exists as 3 isotopes. It is 88% C-12, 1% C-13 and 11% C-14. What is the average atomic mass…

A: average atomic mass= isotop% multiplied by atomic mass /100

Q: A 20.0 g sample of an element contains 3.89 x 1023 atoms.

A: Given:-  Number of atoms = 3.89 × 1023atoms Mass of sample = 20.0g

Q: What is the mass number of a phosphorous (P) atom with 17 neutrons?

A:

Q: An alloy is 12.8% copper by mass in tin. Copper makes up what percentage of the atoms in this sample

A:

Q: An element has three isotopes with the following masses and percent natural abundances. Determine…

A: Given that,

Q: An unknown element X has the following isotopes: ⁵²X (90.00% abundant), ⁴⁹X (8.00% abundant), ⁵⁰X…

A: The approximate atomic mass of element x is calculated as,

Q: How much (in atomic mass units, amu) would 78 atoms of an element with atomic mass 107.18 weigh?…

A:

Q: An unknown element X has the following isotopes: ²⁵X (80.50% abundant, mass = 25.03 amu) and ²⁷X…

A:

Q: Given the following atomic symbol: 41 19 X Which element would be X?

A: To find out the element X, we need to check the atomic number of the element X in the periodic table…

Q: 2. Element "X" has 2 naturally occurring isotopes with the following masses and natural abund X-69…

A:

Q: An unknown element X has the following isotopes: 52X (87.00% abundant), 4⁹X (8.00% abundant), 50X…

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

Q: A mass of 7.86 g of an element is known to contain 2.31 x 1023 atoms. What is the atomic mass of the…

A: In this question given  Number of atom , and mass of elements

Q: QUESTION 1 If the atomic number of an element is 12 and its atomic mass is 25; you could conclude…

A: Given values are., Atomic number = 12 Atomic mass=25

Q: Calculate the mass and charge of 1. nucleus of atomic N 2. singly ionized Na2+

A:

Q: explain how we calculate the mass of an atom and why we write this down in atomic mass units

A: Atomic mass of an atom is the sum of total number of protons and neutrons present in the atom. It is…

Q: Sycamorium Sy, a hypothetical element occurs in three isotopes, who masses and abundances are given…

A: Given: Isotope Mass Abundance Isotope1 297.021 21.9% Isotope2 299.010 33.3% Isotope3…

Q: An element has the following natural abundance and isotopic masses: 90.92% abundance with 19.99amu,…

A: The average atomic mass (Mav) is the sum of the product of the natural…

Q: What is the mass ratio of chlorine to phosphorus in Compound B?

A: Mass of chlorine in compound B is 40.9gMass of phosphorus in compound B is 11.9g

Q: The element lithium has two stable isotopes, lithium-7 with a mass of 7.016 amu an lithium-6 with a…

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.