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1) The elements X, Y, and Z form these compounds: XCl3, X2Z3, and YO. What formula would you predict for the compound formed between Y and Z? (Assume ionic charges of Cl and O.)
a) YZ
b) YZ2
c) Y2Z
d) YZ3
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- Which of the following are ionic compounds? O a) NO2 b) PbCl4 c) CsBr O d) GaCl3 Oe) XeCl4Which of the following compounds is NOT an ionic compound?A) CsF B) CH2Br2 C) Fe2O3 D) NH4OH E) all are ionic compounds1) Chemical formulas can be written as empirical formulas, molecular formulas, or structural formulas. Explain why these different forms of molecular expression are necessary. Chemical formula of a compound can be explained by the following forms - An Empirical formula gives the simplest, whole-number ratio of atoms in a compound. A Molecular formula uses chemical symbols and subscripts to indicate the exact numbers of different atoms in a molecule or compound. A Structural formula indicates the bonding arrangement of the atoms in the molecule. 1) Chemical formulas can be written as empirical formulas, molecular formulas, or structural formulas. Explain why these different forms of molecular expression are necessary. Chemical formula of a compound can be explained by the following forms - An Empirical formula gives the simplest, whole-number ratio of atoms in a compound. A Molecular formula uses chemical symbols and subscripts to indicate the exact numbers of different atoms in a…
- Which of the following is an ionic compound? A) Cl2O B) PCl5 C) SCl2 D)CH2O E) MgCl21) a) Identify the bonds formed between the following pairs of atoms as either covalent or ionic: zinc and fluoride, lithium and chloride, cesium and iodine, carbon and oxygen, chlorine and chlorine. b) What are likely formulas for the following molecules? Express your answer as a chemical formula. CH2Cl? BH? H?S SiBr?1. Write formulas and names for compounds formed by the following positive and negative ions: a) Ba2+ and NO3- b) Al3+ and CO32- c) Pb2+ and CO32- 2. Write the cation and anion formulas (including charges) and the name of the following ionic compounds. (Use Roman numerals to indicate the charge on metals that can have more than one positive charge.) a) CaF2 b) TiO2 c) FeSO4 d) FeP e) NH4NO3 (this compound is composed of two polyatomic ions.) 3. Write formulas of the two ions in each compound and then write the formula of the compound. a) potassium iodide cation: K+ inputted as K^+ anion: I- inputted I^- formula: KI b) aluminum hydroxide c) sodium phosphate d) sodium phosphide e) copper(II) sulfide
- 2. Write the chemical formula for each of the following compounds: a) Iron (III) hydroxide b) Zinc sulfide c) Tin (II) perchlorate d) Cobalt (II) iodide e) Potassium nitrite f) Aluminum bromide g) Cobalt (III) carbonate h) Lead (IV) nitrate i) Ammonium oxalate4) Which one of these compounds is an ionic compound? A) N2 C) Na20 B) CO2 5) Select the correct name- formula pair. A) carbon tetrachlorine; CCI4 B) trisilicon octabromide; Si3Brg C) oxygen difluorine; OF2 D) sulfur hexachloride; SCI4 E) diiodide heptoxide; l207Which of the following compounds would yoou expect to be ionic? A) NH3 B)C2H6 C) LiBr D) H2O2 E) none For me all the compounds look like an ionic compound, since each of them consist of a metal and a nonmetal. A) NH3 - Nitrogen (nonmetal) + Hydrogen (alkali-metal) B)C2H6 - Carbon (nonmetal) + Hydrogen (alkali-metal) C) LiBr - Lithium (alkali-metal) + Bromine (nonmetal) D) H2O2 - Hydrogen (alkali-metal) + Oxygen (nonmetal) Where am I wrong? Thank you!
- Complete and balance the following methesis reaction in aqueous solution.Instructions• Use proper element capitalization. Iron = Fe not fe.• Enter formulas without subscrips: CaCl2 = CaCl2, K2SO4 = K2SO4• Monoatomic ions do not require parentheses. Correct: Na2CO3. Incorrect: (Na)2CO3•Polyatomic ions only require parentheses when there are two or more. Correct: Na3PO4. Incorrect: Na3(PO4), Correct: NH4NO3. Incorrect: (NH4)(NO3). correct: Ca3(PO4)2• In each case one product is soluble (aq) and one insoluble (s). Use solubility rules to determine which product appears in each box.____Pb(C2H3O2)2 (aq) + ____ KI (aq) ➝ _____ ____________(aq) + ____ _________________(s)1. C3H8 though covalently bonded cannot be named as tricarbon octahydride. Which of the following premise supports this? O The hydrogen acts as cation. O The compound is not an empirical formula O The name follows ionic compound O The number of atoms need not to be specified O C₂Hs is a hydrocarbon 2. Tritium, 1 3 3/1t, a radioactive isotope of hydrogen, slowly turns into a helium isotope, 2 3 He 3/2He. Which of the following is correct about the two isotopes? O They have the same number of neutral subatomic particles O Their cations are deflected to the same point in a magnetic field whose strength is varied OTheir cations are deflected to the same point in a magnetic field whose strength is not varied O They have the same nuclear charge O They have the same number of charges in subatomic particles.Complete and balance the following methesis reaction in aqueous solution. Instructions• Use proper element capitalization. Iron = Fe not fe. • Enter formulas without subscrips: CaCl2 = CaCl2, K2SO4 = K2SO4• Monoatomic ions do not require parentheses. Correct: Na2CO3. Incorrect: (Na)2CO3•Polyatomic ions only require parentheses when there are two or more. Correct: Na3PO4. Incorrect: Na3(PO4), Correct: NH4NO3. Incorrect: (NH4)(NO3). correct: Ca3(PO4)2 • In each case one product is soluble (aq) and one insoluble (s). Use solubility rules to determine which product appears in each box. BaCl2 (aq) + (NH4)3PO4(aq) ➝ (aq) + (s)