2. The model represents a(n) A. Compound B. Mixture C. Element D. Electrons

Q: 4. What is a chemical formula? List some examples

A: Introduction: Introduction: Compounds are formed by the combination of two or more elements in a…

Q: Nbalance Za3L2 + Nf2QU ----> ZaQu + Nf3L Za= +2 QU= polyatomic -2 Nf= +1 metal L= nonmetal -3…

A: To balance the equation, Za3L2 + Nf2QU ----> ZaQu + Nf3L

Q: 1. Tulis persamaan kimia bagi peneutralan di antara (a) asid sulfurik. H,SO, dengan barium…

A: We are authorised to solve only one question at a time. Please post rest of the questions…

Q: In a lab experiment, 7.64 g of phosphorus reacts with bromine to form 66.77 g of phosphorus…

A: law of constant composition:-  a chemical compound always contains its constituent elements in fixed…

Q: 2H2 (g) + O2 (g) 2H20 (g) C(graphite) + CO{g) =2 CO(g) CO2(g) + H2(g) =CO(g) + H2O(g) Ke = 1.4 Ke =…

A:

Q: Show, with calculations, how the following data illustrate thelaw of multiple proportions:Compound…

A: Given information; The mass % of sulfur in compound 1 is 47.5 and mass % of chlorine in compound 1…

Q: Describe and illustrate Dalton's Model, Thompson's Model, and Bhor's model of the atom.

A: Thompson's Model: J. J. Thomson performed experiments studying cathode rays and discovered that they…

Q: a. How many carbon atoms are in the sam b. How many hydrogen atoms are in the s c. How many oxygen…

A:

Q: A nitrogen oxide is 63.65% by mass nitrogen. The molecular formula could be NO2 N20 N204 NO either…

A: Given, Mass % of Nitrogen = 63.65 %  So, Mass % of Oxygen  =( 100 - 63.65 ) %  = 36.35 %

Q: 1. 2 Li, Et,0 2. 0.5 equiv. Cul. 3. CH3(CH2)½Br -CI

A:

Q: (2.112 Each circle contains a representation of Determine its name, formula, and molecular (formula)…

A: To predict the molecular mass and name, at first one has to determine the chemical formula of the…

Q: 9. What 9. What is the difference between a molecular element and an atomic element? List the…

A: Element is a substance which cannot be broken down into simpler unit.It is purest form any…

Q: A 49.8 g sample of water (H2O) contains 5.57 g of hydrogen. What mass of oxygen is contained within…

A: Solution:- 2H2O -> 2H2 + O2       Given data:- 49.8 g sample of water contains 5.57 g of…

Q: 2Br + 2K* → Br₂ + 2K MM of K-39.10 g/mol MM of Br₂159.8 g/mol R=8.314 J/mol-K F-96,485 J/mol-V 4.77…

A: In electrolytic cell, oxidation and reduction reaction takes place simultaneously. The oxidation…

Q: 4.22 Write ionic and net ionic equations for the following reactions:

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Q: 1.25 moles of PbO2 have a mass of

A: Given  Number of mole of PbO2  = 1.25 mole  Mass = ?

Q: 4.53 Classify the following redox reactions as combination, decomposition, or displacement:

A: Since you have posted questions with multiple subparts, we will solve the first three sub parts for…

Q: 1. 2 Li, Et,0 2. 0.5 equiv. Cul 3. CH3(CH2)2Br CI

A: The major organic product for the given reaction scheme is to be determined. Alkyl halide on…

Q: What are allotropes? Give an example. How are allotropesdifferent from isotopes?

A: Given term,        Allotropes and isotopes

Q: Determine the number of atoms in a 3.57g same of carbon

A: Since Carbon (C) is a mono atomic element hence number of atoms of C = moles X Avogadro's number…

Q: Compound 1 has a composition of 23 mass % of element A and 77 mass % of element B. A and B also form…

A: Law of multiple proportion:  As per the law of multiple proportion, if 2 elements form more than one…

Q: The total number of atoms in NaCI

A: The number of atom of an element in its molecules is known as atomicity. SodiumChloride or NaCl is…

Q: Is the statement inconsistent with Dalton’s atomic theory as it was originally stated? Why? The…

A: Yes,the statement that formation of a compound often involves the destruction of of one or more…

Q: 29) Which one of these compounds is an ionic compound? B) NO2 A) C6H1206 C) Li,O D) CH3OH E) P4010…

A: 29) Covalent compounds are those in which covalent bond is formed. Covalent bond is formed by mutual…

Q: 19. Name or Write the following compounds: a) Dinitrogen hexafluoride = b) Lead (IV) oxide c) NaMno,…

A: a.) From the name it is clear that the compound contain 2 nitrogen(di) and six fluorine(hexa) atoms.…

Q: 1. Naturally occurring chlorine that is put in pools is 75.53 percent"CI (mass = 34.969 amu) and…

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

Q: (a) CaCO,(s)²Ca²*(aq) + CO,²-(aq) (b) Mg,(PO,);(9) =3 Mg²"(aq) + 2 PO,' (aq) (c) CO(g) +…

A:

Q: The radius of a hydrogen atom is 37 pm (1pm 10-12m). How many hydrogen atoms lined up side to side…

A: Given,Radius of hydrogen atom = 37 pmDiameter of hydrogen atom = 2 × radius = 2 × 37 pm = 74 pm…

Q: What is the balanced equation of the synthesis reaction of benzoin to benzil using the reagent…

A: The balanced reaction of benzoin with nitric acid in presence of acetic acid is given as

Q: Naturally occurring elements are originally formed: O A. Inside the core of stars, or when stars…

A: Naturally occurring elements as the name suggest, it is formed naturally not by any man made actions

Q: O Cs20 > SnO2 > MgO > P4010 > Cl207 O C,0, > P4010 > SnO2 > Cs20 > MgO O MgO > Cs20 > P4010 > SnO2 >…

A: Applying concept of metalic character and electronegative of central atom.

Q: ny atoms c

A:

Q: of atoms blocks metals or nonmetals? metals Os OP [G]ns? nonmetals Od Of O metalloids O metals Os OP…

A:

Q: Ca?* and S?- Express your answer as a chemical formula.

A: To form the chemical formula by ions (cation & anion ). We have to make charge balance between…

Q: What are the charge and mass of?:  a)  a singly ionized sodium atom, Na2+ (??????: 2311??, ????=…

A:

Q: A sample of methane (CH4) has a mass of 71.6g.  How many moles does that equal to?

A: Mass of Carbon =12g Mass of Hydrogen = 1g Molecular mass of methane = 16g 16g of methane  = 1 molr…

Q: Balance each reaction and write its reaction quotient, Q꜀:

A:

Q: macroscopic structure level is! A. Structural elements that may be viewed with naked eye B.…

A: Given : We have to tell about macroscopic structure level.

Q: 1. How many ATOM nitrogen trifluoride atoms c

A: Note: According to our guidelines we are supposed to answer only first question

Q: A 0.8870 g sample containUng Qaix Naci and KGI was Teated win AgNO3. formed had a mass of 1.913 g.…

A:

Q: Ing tabie gives numbers óf electrons, protons, and neutrons in atoms or ions of a number of…

A: Neutral species mean number of protons = number of electrons Negative species will have number of…

Q: Determine Δngasfor each of the following reactions:

A: The value of Δngas = (Sum of number of moles of gaseous products) – (Sum of number of moles of…

Q: molybdenum Atomic Number 42 Molybdenum has seven isotopes, each with natural abundances between 9 -…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: 31. How many atoms of hydrogen are in ONE molecule of (NH4)2S04? А. 4 В. С. 6. D. 1 Е. 8

A: The given compound is ammonium sulphate. (NH4)2SO4

Q: 65. Name each of the following compounds: c. Ag,S d. MnO, a. CsF b. LiN e. TiO, f. Sr,P2

A: Since you have posted multiple questions with multiple sub-parts, we are entitled to answer the…

Q: Calculate the mass %'s for hydrogen and oxygen in the two samples given below. Is the law of…

A: To solve first we calculate the % composition of Hydrogen and Oxygen to given sample A and B

Q: the mass percent of magnesium in MgSO4.

A:

Q: Calculate the mass of sample. 72.1 mmol SO2

A: Given:  The number of moles of SO2=72.1  mmol=72.1×10-3mol The molar mass of…

Q: 6) CF+ Br2 →_ CBr4 + F2 7) HCN + -CusO, - H2SO4 + Cu(CN)2 - - 8) GaF3 + Cs →_ CsF + Ga 9) BaS +_…

A: In a balanced equation, the number of atoms of the reactants becomes equal to the number of atoms of…