1. An Element from Group 1A and Group 7A (Periods 2-6) shared a Chemical Bond which formed a solid precipitate. This entails that ____________ . 2. An Element from Group 5A and Group 6A shared a Chemical Bond. This entails that ____________ .

Q: A. Na2S+CaCl2 CaS + Na → C. Zn(s) + H₂SO4 → ZnSO4+H2 1 B. Cu (g) → Cu²(g) + le D. Cu(g) → Cu¹*(s) +…

A: Ionization energy (EI): When an electron is removed from the outermost shell of an isolated gaseous…

Q: O What is the mass of 0.6 mole of CO2 (in g)? A) 31 B) 7 C) 26 D) 18 E) 37

A: Given: Moles of CO2 = 0.6 mol Standard data: The molar mass of CO2 = 44 g/mol

Q: Diamond is one form of elemental carbon. An engagement ring contains a diamond weight 1 carats. One…

A: Conversion of Units:-This can be doneby a Method called unit factor Methodcalled Dimensional…

Q: Manganese sulfate forms the hydrate MnSO4⋅?H2O(s)MnSO4⋅nH2O(s) . If this hydrate is heated to a…

A: Given : Mass of MnSO4.nH2O taken = 10.140 g And mass of MnSO4 produced = 9.0592 g The mass of water…

Q: 5 B. A student writes the following incorrect chemical equation for a single replacement reaction…

A: Hi, since you have posted multiple questions, we will answer the very first question for you. Kindly…

Q: c. FeS(s) + 2HCI(aq) → H2S(g) + FeCl2(aq) Soth (b) and (c) a. 2Sb(s) + 31g) b. 2H9O(s) → 2Hg(l) +…

A: Decomposition reaction are the reactions in which the reactant breakdown to form two or more…

Q: 1. Which of the following is not one of Dalton's laws? a) Atoms are indestructible. b) Atoms of the…

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Q: When magnesium ribbon is burned inside dry ice slabs (carbon dioxide), black specks (carbon) and…

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Q: so, (sulfate) NO, (nitrate) co, (carbonate) Chemical How many S0, ? Chemical How many NO, ? Chemical…

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Q: What is the mass percentage of phosphorus in a sample of 8.53 phosphorus oxychloride containing a…

A: Mass percentage of phosphorus = 20.16 %

Q: 1. A sample of 2 tsp of sugar (C12H22O11) weighs 9.00 g. a. Record each step needed to calculate the…

A: We can calculate the moles of any substance from the following formula : Moles of substance = mass…

Q: Lithium carbonate, Li2CO3, contains 18.8 % lithium and is used in the treatment of mental illnesses…

A: Given : mass percent of lithium in Li2CO3 = 18.8 %. And mass of Li2CO3 sample = 1.48 g

Q: The figure (Figure 1) shows the reaction of element A (lavender spheres) with element B (tan…

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Q: Aluminum has a density of 2.70 g/cm3 and molar mass of 26.98 g/mol. Its atomic radius is 143 x 10 –…

A: Answer:

Q: Ozlg) + 4H*(ag) + 4e = 2H,0 +1.23 Br2(aq) + 2e = 2Br (aq) +1.07 NO, (ag) + 4H*(ag) + 3e = NO(g) +…

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Q: B How may oxygen atoms are in 225 g of oxygen gas? 4.23 x 102+ b. 6.84 x 10²4 8.47 x 10²4 1.69 x…

A: To calculate the number of oxygen atoms in 225 g of Oxygen gas.

Q: 26. ZnF, - 27. CCI, - 28. SeH, - 29. Al(OH), - 30. K,O -

A: We have to name these inorganic compounds.

Q: Write the following equations for Al2(SO4)3(aq) and Pb(NO3)2(aq). Include the states of matter in…

A: In a double displacement reaction, two ionic compounds exchange their constituting ions between each…

Q: How many grams of gold (Au; atomic mass = 197.0 g/mol) contains 2.5 x 1020 gold atoms?

A: Number of moles = mass/molar mass  Mass = moles × molar mass  Molar mass of Au = 197.0 g/mol

Q: Please answer A-E

A: Mass of 0.025Mpotassium nitrate and 0.025Mcopper sulphate are calculated as,vv

Q: Use the References to access important values if needed for this question. 1A 3A 4A SA 6A 7A He BCNO…

A: Atomic mass of Ti =22 Atomic mass of Sc= 21

Q: A Matter can not be created or destroyed, The mass of the reactants in a ch reaction will equal the…

A: Chemical bond is M Two types of chemical bonds are L Chemical reaction K Reactants F…

Q: a. ? + Co Mn + He 59 27 b.?→ N + e c. e + Kr -? 36 d. He + Am →? + 2n

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Q: → 2NH3 (9) 1. N0 + 3H, 2. CO20) 2(g) CO(NH,2) + H,O (6), + 2NH, 2(g) 3(g) 3. C,H210) + H,O (a) 2CO,…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: a)Using the data provided, determine the mass percent of water and the mass percent of anhydrous…

A: Given, mass of hydrated copper (II) sulfate: 131.4g mass of anhydrous copper (II) sulfate: 130.26g…

Q: When a chemical reaction occurs, atoms rearrange to form new compounds, but no new atoms are created…

A: Figure shows A is single element. There are 4 A atoms present in the reactant side. B is diatomic…

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

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Q: Show your calculations clearly. Suppose you are provided with a 36.55 g sample of potassium…

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Q: Use the standard entropy data to determine the change in entropy for each of the reactions listed in…

A: Note - Since you have posted a question with multiple sub-parts, we will solve first three sub -…

Q: 1. Cobalt forms two sulfides: CoS and Co2S3. Predict the ratio of the two masses of sulfur that…

A: The sulphide of cobalt given are CoS and Co2S3. The oxides of lead are given are PbO and PbO2 The…

Q: A cable making company produces a metal wire, with a diameter of 1.00 mm. What will be the length of…

A: Given: Metal wire diameter=1 mm No. of moles=1 Density of metal=17 g/cm3

Q: gas. D. Matter with a defined shape and defined volume. E. The formation of new substances by…

A: We have to match the right answer

Q: 7. _Na,PO, CaCl, Ca, (PO,), NaCl 8. KCIO, KCI + 9. Au,O, Au 10. Ag,S KCN _KAg(CN), K,S

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Q: `CN 1 2 4 А. [1] 1. LIAIH4, 2. Н20%; [2] Naон, СНЗСНО; [З] 12 (ехcess), NaОН; [4] (СН3)2CHCH2Br В.…

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Q: 26. ZnF, - 27. CCI, - 28. ScH, - 29. Al(OH), - 30. K,0 -

A: Given  Formula of compounds  = ZnF2 , CCl4 ,  SeH2 ,  Al(OH)3 ,  K2O  Name of compound = ?

Q: 4. A student had a sample of CaCl2 • nH20. He heated the sample until the mass did not change. From…

A: Since you have posted multiple questions, we are entitled to answer the first only. The experiment…

Q: An acid, HEl, is formed from a hypothetical element, El, and a subsequent aqueous solution is…

A: The given molar mass of the elements are as follows:- H: 1.00784 g/mol O: 15.999 g/mol El: 156.31965…

Q: A sulfur dioxide gas sample has a volume of 242.62 mL at 242279 pascals and 82.99oF. Calculate the…

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Q: 1. Hg(OAc), CHCH,OH 2. NABH, 5 6 H2 Lindlar's cat. 1. Sia,BH THF 2. H2O2, OH, H20 8 1. NaNH2 H-…

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Q: g. CdCd?a)||Sbag)|Sb(s) h. Pt|Cutag), Curaq)||Mg?aq)|M9(s) i. Pt|Cran), Cr20Ta)||CLO5(aq), Clag)|Pt…

A: Answer:- This question is answered by using the simple concept of writing the balanced chemical…

Q: Which of these elements is most reactive? -- I F Br Cl

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Q: 5. A student created a model for the following balanced equation as shown below. What color or…

A: Answer :- White color circle (shaded with black lines)  In student's model, element Sulfur is…

Q: Calculate the mass of Cu in g from 8.20 kg CuFeS2

A: From the chemical formula it is clear that 1 mole CuFeS2 contains 1 mole Cu. Molar mass of…

Q: An acid, HEl, is formed from a hypothetical element, El, and a subsequent aqueous solution is…

A:

Q: A mixture of 197.1 g of P and 203.6 g of O, reacts completely to form P.0, and P,010. Find the…

A: Using mole  concept  easily determine how much reactant used and how much product is formed .

Q: A 67.2 gg sample of a gold and palladium alloy contains 2.68×1023 atoms. What is the mass percentage…

A: Mass percent of an element is the ratio of its mass  in the compound to the total mass of the…

Q: Crystals of magnesium phosphate and glucose, C6H12O6(s), were dissolved together in a beaker of…

A: GIVEN:-  Crystals of magnesium phosphate and glucose, C6H12O6(s), were dissolved together in…

Q: NO, Br 1) Felbr, OA. 2) HNO, HCI 1) HNO, OB. 2) Bra Febrs 1) B Febr, OC. 2) HNO, HSO. 1) Br Febr,…

A: We want to prepare meta bromo nitrobenzene . As nitro group is meta directing first benzene is…

Q: Fe(s) + 0,(g) + H,0(1) → Fe(OH),(aq)

A: Balancing above chemical reaction is