____ZaQU      +    ____Nf 2 L3   ---->     ____Za2O   + ____ Nf(QU)3

Q: 198 198 Calculate the percent abundance of copper-63 with a mass of 62.93 amu and copper -65 with a…

A: If A1 and A2 are the mass numbers of two isotopes and X1 and X2 are their pecent abundance then…

Q: Identify the statements that are correct. Check all that apply. ► View Available Hint(s) The mass…

A:

Q: in the star wars series, the death star is a spherical space station and weapon with a diameter of…

A: The diameter of death star is 99 miles. The diameter of solid iron sphere is 6.23 times larger than…

Q: Consider the following made-up compound: (DJ)3Q2 Determine the number of moles of element Q in the…

A: Given ,Fake Periodic table.Compound : Mass of = 0.575 gObjective : Determine moles of Q in

Q: S Ina 3.7-gram sample, there are (A) 1.1 x 10 atoms of gold (B) 3.2 x 1025 atoms of gold (C) 4.4 x…

A:

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

A: Given: 1)To determine the no.of atoms of 124Sn present in 27.3g of natural sample. 2) To calculate…

Q: l/east.cengagenow [References) Naturally occurring element X exists in three isotopic forms: X-28…

A: Isotopes of an element is used for calculating the average atomic mass of an element. The average…

Q: Substance calcium carbonate iron oxide Chemical Formula CaCO₁₂ Fe₁₂O magnesium silicate MgSiO4…

A: The objective of the question is to identify a common characteristic between the chemical compounds…

Q: Use the isotope data to calculate the relative atomic mass of Si, to 8 s.f. = __________________…

A:

Q: Part II. Calculate the Atomic Mass 1. 0.337% 35 Ar; 0.063% 38A1; 99.60% 4ºA 2. 7.75% 68Ge; 20.52%…

A: 1. Mol %  of  35Ar = 0.337%  Mol % of  38Ar = 0.063%  And mol % of 40Ar = 99.60 %  Mass of 40Ar = 40…

Q: What element makes up 25% of lliving things?

A: The major elements present in the human body are hydrogen, oxygen, carbon, and nitrogen.

Q: C The radius of a nickel atom is 125 pm. How many nickel atoms would have to be laid side by side to…

A: We are given : radius of nickel atom (r) = 125 pm distance (d) = 1.11 mm number of nickel atoms (n)…

Q: Determine the number of atoms in 33.0 grams of calcium, Ca. (The mass of one mole of calcium is…

A: Since, Moles is the ratio of mass to the molar mass of that atom or molecules. Also, Number of atoms…

Q: The atomic mass is derived from the mole. O True O False

A:

Q: The ratio of the mass of Oto the mass of Nin N2O3is 12:7. Another binary compound of nitrogen has a…

A: The given ratio of mass O to the mass of N in N2O3 is 12:7Mass of O in N2O3 = 3x16 amu…

Q: 2. Alma, the chemistry technician, was working in the lab and discovered a potentially new element…

A: The atomic mass of the given potential element is equal to the relative atomic mass of the three…

Q: According to the mass spectrum above, the average mass of tin in this sample is (A) 219.76 amu (B)…

A: A mass spectrum is an intensity vs. m/z plot representing a chemical analysis. Hence, the mass…

Q: 9. Which species represents a chemical compound? (1) N₂ (2) NHẠ* 2B-2 lonic Charge (3) Na (4) NaHCO3…

A: Since question 9 and 10 is different from other questions, we solve only 9 and 10 because all others…

Q: Find the total number of atoms in a sample of cocaine hydrochloride, C17 H22 CINO4, of mass 24.0 mg…

A:

Q: You have 2.50 g of each of the following elements: Ca, Cu, Cs, C, and Cr. Which sample contains the…

A: We have to select the sample with largest number of atoms

Q: Combustion of hydrocarbons such as pentane (C,H,12) produces carbon dioxide, a "greenhouse gas."…

A:

Q: How many moles of calcium atoms do you have if you have 3.39 x 1021 atoms of calcium. (The mass of…

A: Calculation of moles of Calcium atom: The given atoms of Calcium = 3.39×1021 atoms The mass of one…

Q: Chromium has an atomic mass of 51.9961 u and consists of four isotopes, 50 Cr. 52Cr. 53 Cr, and Cr.…

A:

Q: Question 10 of 31 Determine the mass in grams of 3.00 x 1021 atoms of arsenic. (The mass of one mole…

A:

Q: An atom of 131 I contains ________ protons.

A: An atom = 131I  Number of protons = ?

Q: Which of the following is false regarding the Fe(NO3)3 compound? a) Valence of iron =+3 O B) It is…

A: The question is based on the concept of chemical bonding. We have to identify the correct statement…

Q: From their charges, predict the periodic table family number for the following ions: Br (select) K+1…

A: A) Bromine have gained one electron so have -1 charge  b) potassium have lost one electron so…

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: 9. How many hydrogen atoms are there in 500.0 L of water? (dH.0 = 1.00 g mL) %3D A: 3.34 x 1025 28

A: Given, the volume of water V =500.0 L =500000 mLdensity of water d =1.00 g .mL-1we are asked to…

Q: 5. What is the molar mass of Ca3(PO4)2? A) 87.05 g/mol B) 215.20g/mol C) 309.97 g/mol D) 430.39…

A: To solve this problem we have calculate the molar mass of given compound.

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.