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chem, predicting direction of change in entropy. 1.25. How many moles of CaO were reacted 0 0 1,938; Sue. A student mixed 1.5g of CaO with 2.5m HNO3. A student mixed 1.5g of CaO with 2.5M HNO3. What is the enthalpy change if 10.0 g of CaO is allowed to react with an excess of carbon? Your Response. a. CaCO3(s)-> CaO(s) +CO2(g0 b. NH3(g)+HCl(g)->NH4Cl(s) c. 2NaHCO3-> Na2CO3(s)+H20(g) +CO2 d. CaO(s)+CO2(g)-> CaCO3, Given the balanced equation representing a reaction: Cao(s) + CO2(g) ---> CaCO3(s) + heat What is the total mass of CaO(s) that reacts completely with 88 grams of CO2(g) to produce 200. grams of CaCO3(s)? Specify which of the following compounds are salts: CH4, NaF, NaOH, CaO, BaSO4, HNO3, NH3, KBr. 0.056 1.25 12.75 2.88 11.11. DH°(kJ) Ca(s) → Ca(g) 193 Ca(g) → Ca⁺(g) + e⁻ 590 Ca⁺(g), use the data given below to construct a Born-Haber cycle to determine the lattice energy of CaO Ca(s)--->Ca(g) 193 Ca(g)--->Ca+(g) + e- 590 Ca+(g)--->Ca2+(g) +e- 1010 2O(g)---->02(g) -498 O(g) +e--->0-(g) -141 O-(g) + e---->O2-(g). The unbalanced chemical equation is below. It is tricky question for students in exams and some have failed :D CaO is basic oxide and solid. CaO(s) 1: 56.0774: HNO 3 (aq) 2: 63.01284: Ca(NO 3) 2 (aq) 1: 164.0878: H 2 O(l) 1: 18.01528: Units: molar mass - g/mol, weight - g. Please tell about this free chemistry software to your friends! Reaction stoichiometry could be computed for a balanced equation. Assuming the solution\'s final volume is 200.0 mL, the density if 1.00 g/mL, and the heat. Calcium oxide is a base compound which can react with acids such as nitric acid, HNO3. CaO(s) 1: 56.0774: HNO 3 (aq) 2: 63.01284: Ca(NO 3) 2 (aq) 1: 164.0878: H 2 O(l) 1: 18.01528: Units: molar mass - g/mol, weight - g. Please tell about this free chemistry software to your friends! CaO (s) + CO2 (g) = CaCO3 (s) A chemist allows 14.4 g of CaO and 13.8 g of CO2 to react. Hi, could someone please take a look at the following … A student mixed 1.5g of CaO with 2.5M HNO3. CaO = 40 + 16 = 56 grams/mol A student mixed 1.5g of CaO with 2.5M HNO3. Dec 22, 2015 . If you do not know what products are enter reagents only and click 'Balance'. Dec 22, 2015 . When the reaction is finished, the chemist collects 19.4 g of CaCO3. The CO2 reacts with the CaO and BaO forming CaCO3, When the following equation is balanced the coefficient of CaO is ... CaO + P4O10 > Ca3(PO4)2, During an experiment, a student adds 1.23 g of CaO to 200.0 mL of 0.500 M HCl. The CO2 reacts with the CaO and BaO forming CaCO3 . chemistry. CaO is a base compound which can react with acids such as nitric acid, HNO3. need to know volume of 2.5 M HNO3 used for determination. Question: Solid Calcium Oxide (Cao) Reacts With Aqueous Nitric Acid (HNO_3) To Form Aqueous Calcium Nitrate And Liquid Water. Predict the direction of the entropy in each reaction. For example calcium reacts: 2Ca(s) + O2(g)--> 2CaO(s) Calculate the mass of calcium prepared from 4,20g of Ca and 2.80g of O2. In many cases a complete equation will be suggested. What is the name of a proton donor in an acid-base reaction? I don't understand what, Assuming that the specific heat of the solution is 4.18 J/(g⋅∘C) and that the calorimeter itself absorbs a negligible amount of heat, calculate ΔH in kilojoules for the reaction CaO(s)+H2O(l)→Ca(OH)2(aq) When 1.045 g of CaO, Many metals react with oxygen gas to form the metal oxide. Consider the following reaction. Similar Questions. Substitute immutable groups in chemical compounds to avoid ambiguity. HCl is gaseous itself and when you say “HCl acid”, it means HCl being present in water. The following question relates to carbon oxide. 2. Use the data given below to construct a Born-Haber cycle to determine the lattice energy of CaO. moles CaO: 1.5 g/molar mass CaO The student decides to increase the temperature of the reaction. A. CaO(s) Ca(s) + 21O2(g) B. Ca2+(aq) + O2–(aq) CaO(s) C. Ca(s) + 21O2(g) CaO(s). How much 2.5M HNO3. D. 2 Ca(s) + O2(g) 2CaO(s) E. 2 CaO(s) 2 Ca(s) + O2(g), I'm working on a problem that says: A 4.00 gram sample of a mixture of CaO and BaO is placed in a 1.00 L vessel containing Co2 at a pressure of 730 torr and a temperature of 25C. The answer will appear below, Always use the upper case for the first character in the element name and the lower case for the second character. (a) How many moles of CaO can form from the. I'm working on a problem that says: A 4.00 gram sample of a mixture of CaO and BaO is placed in a 1.00 L vessel containing Co2 at a pressure of 730 torr and a temperature of 25C. The chemical equation for this reaction is: CaO + HNO3 = Ca(NO3)2 + H2O. Determine the limiting reactant, Which of the following is the formation reaction for CaO(s) ? Limiting reagent can be computed for a balanced equation by entering the number of moles or weight for all reagents. Write The Balanced Chemical Equation, And Net Ionic Equation For The Complete Ionic Equation, Process. CaO +2 HNO3 -----> Ca(NO3)2 + H2O. Respond to this Question. CaO = 40 + 16 = 56 grams/mol so we have 1.5/56 = .0268 mols of CaO 1 0; Damon. How many moles of CaO were reacted, CaO + 2HNO3 ---> H2O + Ca(NO3)2 ?? Compound states [like (s) (aq) or (g)] are not required. An Acid-Base neutralization reaction qualifies a compound if it forms a product from both the base and acid. The reaction of CaO and CH3COOH goes something like what is shown below. Enter either the number of moles or weight for one of the compounds to compute the rest. Direct link to this balanced equation: Instructions on balancing chemical equations: Enter an equation of a chemical reaction and click 'Balance'. You can view more similar questions or ask a new question. Chemistry. CaO + 2HNO 3 → Ca (NO 3) 2 + H 2 O [ Check the balance ] Calcium oxide react with nitric acid to produce calcium nitrate and water. so we have 1.5/56 = .0268 mols of CaO, Hi, could someone please take a look at the following question? CaO(s) + 3C(s) > CaC2(s) + CO(g) deltaHrxn = +464.8 kJ/mol-rxn Is the reaction endothermic or exothermic? Examples: Fe, Au, Co, Br, C, O, N, F.     Compare: Co - cobalt and CO - carbon monoxide, To enter an electron into a chemical equation use {-} or e. To enter an ion specify charge after the compound in curly brackets: {+3} or {3+} or {3}. The student observes a temperature increase of 5.10 °C. First Name. Direct link to this balanced equation: Instructions on balancing chemical equations: CaO + 2HNO3 => Ca(NO3)2 + H2O This is an acid/base reaction but in terms of the several types I think you are looking for double displacement. Calcium carbonate react with nitric acid CaCO 3 + 2HNO 3 → Ca (NO 3) 2 + CO 2 + H 2 O [ Check the balance ] Calcium carbonate react with nitric acid to produce calcium nitrate, carbon dioxide and water. Better quality Cung cấp FILE WORD chuyên đề và đề thi thử trên toàn quốc Trang 1 TUYỂN TẬP 200 BÀI TOÁN HNO 3 VẬN DỤNG CAO TRONG MÙA THI THỬ 2017 Cho biết nguyên tử khối của các nguyên tố : H =1; C = 12; N = 14; O = 16; Na = 23; Mg = 24; Al = 27; S moles HNO3= L HNO3 x 2.5 M HNO3. In the reaction CaO(s) + SO2(g) CaSO3(s), O2- acts as a Lewis base, and SO2 acts as a Lewis acid. CaO + HNO3 -> Ca(NO3)2 + h2O 1. how many moles of CaO were reacted? CaO + 2HNO3 ---> H2O + Ca(NO3)2 ?? 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