Which best describes isotopes? A. Same number of neutrons, different number of electrons B. Same number of protons, different number of neutrons C. Same number of protons, different number of electrons D. Same number of neutrons, different number of protons   Which pair of elements can form an ionic compound? A.carbon and oxygen             b. lithium and sodium c. magnesium and chloride                         d. sulfur and bromine

Q: We have found two isotopes of carbon in our samples, the first with mass number 14 and the second…

A: Definition of Isotopes - The isotopes of an elements can be defined as atoms with the same number of…

Q: When 2.55 g of an unknown weak acid (HA) with a molar mass of 85.0 g/mol is dissolved in 250.0 g of…

A: Ka is the acid dissociation constant. It tells the strength of an acid in solution.

Q: In the molecular level picture of gases, what do the particles represent? A. atoms like N, O, Ar and…

A: At the molecular level, the properties of gas like pressure, temperature, and effective collisions,…

Q: An atom in which the number of protons is no longer equal to the number of electrons is ___.   A.…

A:

Q: Consider two compounds. Compound A contains 15.7 g of sulfur and 18.6 of fluorine. Compound B…

A: Mass of fluorine in compound A = 18.6 g Mass of sulfur in compound A = 15.7 g Mass ratio of fluorine…

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: Determine the number of electrons in the Cl -1 ion. a. 17 electrons b. 18 electrons C. 1 electron d.…

A: Given,

Q: Bromine has two naturally occurring isotopes, Br-79 and Br-81. Given that on the planet Saturn the…

A: To determine which of the isotope is the most abundant on Saturn.

Q: 3. Which statement is true according to the Law of Definite Proportions? a. A chemical compound…

A: The objective of the question is to identify the correct options.

Q: Convert atomic mass of Ca to g. atomic mass of Ca is 40.08 amu  Group of answer choices   A.) 3.00…

A:

Q: There are electrons and +2 neutrons in the ion of Cd Atomic number: 48 Mass number : 112 O A. 46, 48…

A: Given ion,    Cd2+ ion    Mass number = 112    Atomic number = 48

Q: Which of the following statements is the law of definite proportions? a. All elements in a compound…

A: we have to determine the true statement for the law of definite proportions

Q: A fictional element has 2 isotopes and an atomic mass of 67.18 amu. If the first isotope is 66 amu…

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

Q: An isotope of iron has a positive charge of 2 and 24 neutrons. How many electrons does it have? a.…

A: They have the same atomic number and position in the periodic table, but differ in nucleon numbers…

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: 4. 14N and 1C have the same number of A. isotopes. B. protons. C. neutrons. D. electrons.

A: The subscript denotes the atomic number and the superscript denotes atomic mass.

Q: Why do atoms combine chemically with other atoms?

A: To explain: Why do atoms combine chemically with other atoms?

Q: 1.Define matter and classify a given substance by state and composition; and suggest how to separate…

A: (1) Matter is any Substance that has mass, occupy volume, and can be sensed by our sense organs. For…

Q: Protons, neutrons and electrons each have a mass of 1 amu. a. True b. False

A: The mass of an electron is 0.000549 amu. The mass of proton and neutron is approximately 1 amu.…

Q: You have an unknown element consisting of two Isotopes, one with mass 36.9659 amu (24.22%), and one…

A: Given data: Mass of isotope 1 = 36.9659 amu, Percentage abundance of isotope 1 = 24.22 %, Mass of…

Q: Give the chemical name or formula, whichever applies, of the following compounds. 1. Bao 2. AuCl3 3.…

A: A chemical formula of an ionic compound can be formed by criss-crossing the valencies of ions.

Q: MCQ 1: The smallest particle of an element which can take part in any chemical change is known as…

A: In any chemical reaction or chemical change atoms participate in a chemical reaction.  Since nucleus…