2.74 An ionic compound forms when lithium (Z = 3) reacts with oxygen (Z = 8). If a sample of the compound contains 8.4x102 lithium ions, how many oxide ions does it contain? %3D 17 20) ro ncte

Q: 2. Nitrogen is made up of two isotopes, N-14 and N-15. Given nitrogen's atomic weight of 14.007,…

A: Given,  Average atomic weight of N = 14.007  Mass of N-14 isotope = 14.003074 g/mole  Mass of N-15…

Q: Be sure to answer all parts. The atomic masses of 121Sb and 123Sb are 120.903824 and 122.904222 amu,…

A: If A1 and and A2 are mass numbers of two isotopes with percent abundance X1 and X2 respectively then…

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: mass of this compound. Q4) Lithium , is used in dry cells and storage batteries and in high…

A:

Q: 3. How many protons (P), neutrons (N) and electrons (e) are present in Os² that has mass number 190…

A: Given that  Atomic no of element = 79

Q: 32. Americium­241 is used in household smoke detectors. This element has 11 known isotopes, none of…

A: Given  Atom = Americium - 241  Number of proton , neutron , electron = ?

Q: Bromine has two naturally-occurring isotopes. 79Br has a mass of 78.9 amu and accounts for 50.3% of…

A: Given : Atomic mass of Br = 79.9 amu  Mass of isotope 79Br = 78.9 amu Abundance of 79Br = 50.3 % And…

Q: Question attached

A: Given data contains, Abundance of X53 is 19.61. Mass of X53 is 52.62. Abundance of X56 is 53.91.…

Q: An unknown element is a mixture of isotopes 120X and 122X. The average atomic mass of X is 121.03…

A: ]Average atomic mass=Σ%abundance x mass of isotope100

Q: A pure copper sphere has a radius 0.944 in. How many copper atoms does it contain? [The volume of a…

A:

Q: 5. Calculate the average atomic mass of Nitrogen (verify in the periodic table) 14N 14.003 u 99.6%…

A: Given,  14N      14.003 u         99.6% 15N      15.000 u          0.4%

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

A: isotopes of X 25X: abundance - 80.50%                       (P1) = 80.50/100 = 0.8050          mass…

Q: 2.5.1 Boron has two naturally occurring isotopes, 1°B and "B, which have masses 10.0129 and 11.0093…

A: Isotopes are the elements which have same atomic number but different mass number which means 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: Cerium is the most abundant rare earth metal. Pure cerium ignites when scratched by even a soft…

A: The Isotopes given are Ce-136(atomic mass=135.907 amu), Ce-138(atomic mass=137.905 amu),…

Q: Question 1: Determine the atomic mass of lithium, given the following information. Mass (amu) 6Li…

A: Applying formula Atomic weight=%of A ×atomic weight of A + %of B ×atomic weight of B /sum of %

Q: 6. Which row in the table is INCORRECT? (a) (b) (c) (d) (e) Symbol 79Se2 P 107 Ag+ 55Mn SV 130-…

A:

Q: A pure titanium cube has an edge length of 2.76 in. How many titanium atoms does it contain?…

A: Here, we have to calculate number of titanium atoms.

Q: 2.27 Show, with calculations, how the following data illustrate the law of multiple proportions:…

A: According to law of multiple proportion, when two elements combine with each other to form more than…

Q: In the Millikan oil drop experiment they determined that every drop had a charge which was a whole…

A: An atom is said to be electrically neutral, if it contains equal number of positive and negative…

Q: The following table presents the abundances and masses of the isotopes of zinc. What is the atomic…

A: The abundance of the naturally occurring isotope given are,

Q: 4. Complete the following table. Symbol # Protons # Neutrons # Electrons Net Charge 206Pb 31 38 3+…

A: In the given question we have to fill the following table. here, we have to write the electron,…

Q: chlorine has two different isotopes. one isotope has a mass of 35.00 amu and another has a mass of…

A: Average atomic mass of Chlorine depends on the relative abundance of the isotope present in the…

Q: An unknown element X has the following isotopes: ²⁵X (80.5% abundant) and ²⁷X (19.5% abundant). What…

A: Average atomic mass can be determined by the equation given below:

Q: 1. Titanium has five common isotopes: 46TI (8.000%, 45.95 amu), 47TI (7.800%, 46.95 amu), 48TI…

A: Given :  Abundance of Ti-46 = 8.000 %  Abundance of Ti-47 = 7.800 %  Abundance of Ti-48 = 73.40 %…

Q: What is the average atomic mass of chlorine if the mass of one isotope is 34.97 amu and has a per…

A: The average atomic mass of an element can be calculated as shown below.

Q: The smallest unit of charge is −1.6×10−19 C, which is the charge in coulombs of a single electron.…

A: Which one gives a whole number after you divide by -1.6x10^-19C since the electron has the smallest…

Q: Lithium, is used in dry cells and storage batteries and in high temperatures lubricants, it has two…

A: Given- M1=6.01521 M2=7.016003 A1 (%)=7.50 A2(%)=92.50

Q: 1. A car is moving with a velocity of 65 km/hr. How many miles would it travel in 35 sec. (1 mile…

A: Mathematical calculation is shown below

Q: An unknown element is a mixture of sotopes 129X and 132X. The average atomic mass of X is 130.35…

A:

Q: The smallest unit of charge is -1.6 x 10-19 C, which is the charge in coulombs of a single electron.…

A:

Q: 2.77/The radii of the lithium and magnesium ions are 76 pm and 72 pm, respectively. Which compound…

A: Given, Radii of Li = 76 pm  Radii of Mg = 72 pm  Which has more ionic attraction = ?

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: What is the atomic weight of an element that consists of TWO isotopes as follows: Isotope 1: mass =…

A: Here we have to determine the atomic weights of element is have two isotopes in following abundances…

Q: An unknown element is a mixture of isotopes ¹²⁰X and ¹²²X. The average atomic mass of X is 121.14…

A: Given : Atomic mass of X = 121.14 amu Two naturally occurring isotopes of element are ¹²⁰X and ¹²²X.…

Q: An unknown element X has the following isotopes: $2X (84.50% abundant), 49X (8.00% abundant), 5°X…

A: Given element has three isotopes Isotope - 1 : 52X Mass number (A1) = 52 Percentage abundance (X1) =…

Q: An unknown element X has the following isotopes: ¹²⁶X (22.00% abundant), ¹²⁸X (34.00% abundant),…

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

Q: Answer the following questions about the 34 s2:.

A:

Q: The smallest unit of charge is –1.6 × 10¬19 C, which is the charge in coulombs of a single electron.…

A: In the given question we have to find out the values of possible charge of oil droplets. Here, the…

Q: A sample of an ionic compound containing iron and chlorineis analyzed and found to have a molar mass…

A: Given molar mass = 126.8 g/mol The iron and chlorine containing compound Molar mass of Fe = 55.8…

Q: Gallium is a metal which forms compounds with a wide variety of uses. Some of the applications of…

A: Isotopes are the species of an atom having the same atomic number but they have different mass…

Q: 3. Tungsten has 4 major isotopes. Given the atomic weight of tungsten, 183.85, complete the…

A: Let, % Abundance of Tungsten-184 = b % Therefore, % Abundance of Tungsten-186 = [100 - (26.50 +…

Q: An unknown element X has the following isotopes: ⁵²X (79.50% abundant), ⁴⁹X (8.00% abundant), ⁵⁰X…

A:

Q: Question attached

A: Given that, Number of protons in Doctokumarium = 119 There are 3 isotopes present. They are:…

Q: 2. How many protons, neutrons and electrons are contained in each neutral element? 27 „Al a. CI b.…

A:

Stereochemistry and Isomerism

Stereochemistry deals with the three-dimensional structure and properties of molecules. It explains the arrangement of atoms and their manipulation within a molecule in a 3D structure. Stereochemistry can be dealt with all types of molecules. Based on the stereochemistry of a molecule, the physical and chemical properties of the molecules vary.