45 atoms of calcium weigh O 1804 amu O 1804 g 2.71 × 1025 amu 900 g 900 amu

Q: How many moles of hafnium contain 6.10 x 10^31 atoms of hafnium?

A: The no. of atoms in hafnium sample = 6.10 x 1031Avogadro’s number is defined as the number of atoms…

Q: 42. The formulas for the oxides of sodium, magnesium, alumi num, and silicon are, respectively,…

A:

Q: A. Binary lonic Monovalent Write the correct formula for each of the following: Ca3N2 Alz03 AgzS…

A:

Q: 42 Pdlc lo%. Erou,u ce

A:

Q: the elements within group 13 have the same number of?

A: The required solution is as follows:

Q: Covert 36.48 moles of CCl4 to atoms

A: The number of atoms in a substance can be determined by converting the number of moles of the…

Q: Which of the following elements is not one of the 10 most abundant in Earth’s crust, oceans, and…

A: There are 118 elements in the periodic table. There are 10 elements which are abundantly found in…

Q: References] Given these mass numbers and number of neutrons, what is the name and symbol of each…

A: An element (say X) is denoted as : ZXA  Here,  Z = Atomic number of the element  A = Atomic mass of…

Q: 32. a. What is an activity series of elements? b. What is the basis for the ordering of the el-…

A: 32a. Activity of series  reflects the descending order of reactivity of metals 32. b Basis reaction…

Q: 8. HMAC=5083dd0d4d151e83553557f162ba7724#10301 11 of 16 I Review | Constants | Periodic Table Submit…

A: IUPAC nomenclature puts out guidelines for the naming of Chemical compounds. Steps involved in…

Q: What are( chemicals properties ,physical properties) explain using example.

A: Physical properties = Physical properties are the physical appearance of the compound without…

Q: Refer to the Pb-207 ion with a 4+ charge, which can be found in the Tests section. (If you cannot…

A: Atomic number- The number of protons or electrons present in an atom called as atomic number. For an…

Q: 16 A sample of 24.54g this sample has a molar mass of 980,24 gold sulfide was found to contain of…

A: Molecular formulas tell you how many atoms of each element are in a compound, and empirical formulas…

Q: Question Convert the following to a compound from the ions (because you cannot do subscripts all…

A: Ionic compound:Ionic compound composed of cation which is positively charged (+charge) and an anion…

Q: [Review Topics] [References) Write the equation for the reaction of lithium sulfate with strontium…

A:

Q: The correct name for VS is:

A: First the name of cation and then name of anion is given.

Q: 1. 1. An element X have throe isotopes X", X and X The percentage abundance of X is 90% and its…

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

Q: Summarize indicating Thomson major contribution to the atomic theory.

A: The atom is the smallest unit of particle that used in a chemical reaction.

Q: The percent by mass of copper(I) in Cu,CO3 is %.

A:

Q: 27 MÁ 27 Mr Dy + 8H² + 5 e¯ + Fe² = Mo² + 40+ Fe²" te

A: is given unbalanced reaction.Separating the reaction as: Reduction half reaction: (decrease in…

Q: An example of an element is chicken noodle soup powerade air inside a balloon lead pipe baking soda…

A: An element is a pure form of substance in which all atoms have same number of proton so here we see…

Q: mass number for the chromium isotope with 29 neutrons Express your answer as an integer.

A: Naturally occurring chromium consists of the following four isotopes: 50Cr, 52Cr, 53Cr and 54Cr. The…

Q: One isotope of a metallic element has mass number 36 and has 24 neutrons in the nucleus. It forms an…

A: Given :-  Mass number = 36 Total neutrons = 24   Total electrons = 10  To determine :-  Symbol for…

Q: what Na stands for

A: A symbol is a notation that generally consists of 1 or 2 letters which is used to represent a…

Q: The number of neutrons in the nucleus of the isotope 22Na is

A: The number of neutrons

Q: The element aluminum forms a a with the charge

A: The element aluminium forms a cation with the charge +3. The symbol for this ion is Al+3 with the…

Q: e Complete the table below by writing the symbols for the cation and anion that make up ionic…

A: To solve this problem we have to write the cation and anion present in the given compound .

Q: Complete the missing blanks in the following question: Anions tend to be_ and cations tend to be (a)…

A: Anions are those which have negative charge and cations has positive charge.

Q: There ave Seueral stalde Isutepes of Mg as as several 1ons well possible of mg Each of these istopes…

A:

Q: Define an element baed upon its composition.

A: We have been asked to define an element based upon its compositions.There are different elements in…

Q: Select the image below that best represents a sample of SF. White spheres represent fluorine atoms…

A: Answer:Pictorial representation of a molecule should explain following two things:Correct…

Q: Find the molar mass of the following chemicals: Sodium (Na) Calcium (Ca) Xenon (Xe) Gadolinium (Gd)…

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Q: How many electrons and protrons does an element  given as   24X50    has?

A: Atomic number of an element denotes the number of protons present in an atom. It is also equal to…

Q: Use the periodic table to find the atomic mass, atomic number, number of protons, and number of…

A: Atomic number is equal to the number of protons and also equal to number of electrons in ground…

Q: You have 1 million atoms each of MN As S Cd and W. Which million of attoms is the heaviest?…

A: The number of atoms is given which is 1 million=106 atoms. To find which atom among Mn, As, S, Cd,…

Q: 02 + 1. Ca 2. CdCO, Ni Cl2 + 3. Zn

A: "Since there are multiple sub-parts in this question and it is not mentioned that which one has to…

Q: 1. Clu +2KBrļaq) 2KClag) + Brz) Kind of atom No. on the Left side No. on the Right side Reactants…

A: 1.

Q: austium good toh x HMAC=446c877376a9bc7ac878d8ad119f4717#10001 chem work b help 1 Balance Chemical…

A: The names of all alkanes end with -ane. Whether or not the carbons are linked together end-to-end in…

Q: What do metals and nonmetals have in common? A both have high melting and boiling points B both are…

A: Metals are those elements which donate electrons. Non metals are those elements which accept…

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.