Calculate the molar mass of an element which has 12 protons from the following list of elements, their number of protons and neutrons and their   abundance.    a. 22% of the elements isotopes have 12 protons and 11 neutrons

Q: Element X reacts with chlorine to form a compound with the formula of X2Cl3. This compound contains…

A: Relative atomic mass: Cl = 35.5 g/mol

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: Which best describes isotopes? A. Same number of neutrons, different number of electrons B. Same…

A: atoms of the same element have the same number of protons, but some may have different numbers of…

Q: A certain element X has four isotopes. 0.5600% of Xhas a mass of 83.91343amu. 9.860% of Xhas a mass…

A: Since element X is an isotope. Isotopes are that element which has the same atomic number but has…

Q: 90 Electrons. neutrons 2. Yttrium was discovered in 1794. It is one of the elements used in…

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

Q: 9. Element X has two naturally occurring isotopes; 10x with a percent abundance of 85% and 12x with…

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

Q: Tin has 10 stable isotopes. The heaviest, 124Sn, makes up 5.80% of naturally occurring tin atoms.…

A: a) The number atoms of 124Sn are present in 25.0 g of naturally occurring tin is to be calculated.…

Q: How many protons (p), neutrons (n), and electrons (e) are in one atom of  23  12   Mg  ? (*23 is the…

A: Mg is an Alkaline Earth Metal (Group 2) element. Atomic No. of Mg = 12 Mass No. of Mg = 23

Q: An element has three naturally occurring isotopes with the following masses and abundances (in…

A:

Q: Which of the following samples of gases contains the greatest number of atoms? (Relative atomic…

A: 4th option is correct that is 13.0 g of C2H6

Q: Bromine (Br) has two isotopes, with masses of 78.92 and 80.92 amu. What is the natural abundance of…

A: given, the two isotopes of bromine with masses heavier isotope = 80.92 amu lighter isotope = 78.92…

Q: Naturally occurring element X exists in three isotopic forms: X-28 (27.977 amu, 32.21% abundance),…

A: In the given question , we have to find out the atomic weight of given isotopic elements.isotope…

Q: The element boron, a trace element in Earth’s crust, is found in foods produced from plants. Boron…

A: The correct option is C) Boron – 11.

Q: An element consists of two isotopes and has an average atomic weight of 85.561 a.m.u. The abundance…

A:

Q: Potassium has two main isotopes, K-39 and K-41. The average atomic mass of potassium is 39.13amu.…

A: Given,Potassium two main isotopes are:  K-39 and K-41The average atomic mass of potassium = 39.13…

Q: Element X forms three different compounds with element Y. Information about these compounds is…

A: We have to determine the formula of compound 2 and 3 such that element X forms three different…

Q: 3. A. B. C. A chlorine atom has 18 neutrons and an atomic mass of 35. How many protons are in the…

A: In an atom three fundamental particles are present. Positively charged particle proton and neutral…

Q: Consider the following data for the element Z. Determine the number of b) protons, c)electrons and…

A: Given : There are total 3 isotopes of element Z. Number of protons in isotope 1 = 16  And mass of…

Q: 4. An element “X* has five major isotopes, which are listed below along with their abundances. What…

A: We are having an element X having five isotope along with their abundance and mass . We have to…

Q: Match terms with their definitions v Avogardo's number v Molar mass v mole v Atomic mass A. mass of…

A: The mole concept was proposed by Avogadro to specify the atoms, molecules, and ions concentration.…

Q: Part B A certain element X has four isotopes. 4.350% of X has a mass of 49.94605 amu. 83.79% of X…

A: We have to calculate no. of neutrons in part A and average atomic mass in part B

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: A certain element XX has four isotopes. 5.845% of XX has a mass of 53.93961amuamu.…

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

Q: An atom of copper has a mass about four times greater than that of an atom of oxygen. What choice…

A: Mass of copper atom = 4 x mass of oxygen atom

Q: 16 How many neutrons are in the most common isotope of Ag? 62 What is the atomic mass of Magnesium?…

A: “Since you have posted a question with multiple sub-parts (not mentioned on which question you need…

Q: Give the complete symbol (X), including atomic number and mass number, of a. a manganese atom with…

A: The general method to write the symbol of an element is given as shown below. XZA Here, A is the…

Q: How many atoms does oxygen have in one mole of oxygen? 6.6 6.02E-23 3.14E-23 2.2

A: How many atoms  are present in one mole of oxygen  Solution is given below in next step

Q: 17.A hypothetical element X is found to have an atomic mass of 37.45 amu. Element X has 2 isotopes,…

A: Given that mass of X-37 = 37.24   Let x be the mass of the other isotope  Fractional abundance of…

Q: O 2.4 g of carbon-1 O 1.2 g of carbon-1

A: Given The two moles of a substance:

Q: The element argon has three isotopes and an average atomic mass of 39.948 u. Idenitfy the most…

A: Element Ar having three isotopes one is Ar-36, second is Ar-38 and last one is Ar-40  Ar-36 have…

Q: A fictitious element X has an average atomic mass of 122.264 u.122.264 u. Element X has two…

A:

Q: The element argon has three isotopes and an average atomic mass of 39.948 u. Idenitfy the most…

A: Given that, Average  Atomic mas s of At=39.948 amu

Q: Calculate

A: We will calculate average atomic mass

Q: On the planet Invertios, boron has two isotopes as follows: Isotope Mass (amu)…

A: Many naturally occuring elements exists as more than one isotope. On the basis of their percentage…

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.