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Question 35 2 pts Consider the reaction: CaO + CO2=CaCO3 Identify the species oxidized OCaCO3 None...
need help with these two problems Consider the reaction: CaO + CO2=CaCO3 Identify the species reduced O CO3 OCao O CO2 OCaCO3 O None are reduced Question 36 - Which of the following contains only nonpolar covalent bonds? O OF 2 O Naci O Br2 OHCI
Consider the reaction: CaO + CO2 + CaCO3 Identify the species reduced CaCO3 None are reduced Сао CO3 CO2
For this question, consider the reaction: CaO(s) + CO2(g) --> CO2(g) + CaCO3(s). Part A: What is the value of ΣΔH°f_products? a) -1207 kJ b) -1028.6kJ c) -1522.4kJ d) -2524.1kJ Part B: What is the value of ΣΔH°f_reactants? a) -1207kJ b) -1544kJ c) -75.2kJ d) -1028.6kJ Part C: What is the heat of reaction? a) -202.1kJ b) -2235.6kJ c) -178.4kJ d) -195.2kJ Part D: Is the reaction endothermic or exothermic?
Consider the following redox equation: CO2(g) + H2(g) =CO(g) + H2O(g). Choose an appropriate chemical formula from the list that identifies the substance oxidized. CO2 O H20 ca H2 Question 45 2 pts For a collision between molecules to result in reaction, the molecules must possess a certain minimum energy and have a favorable orientation relative to each other when they collide exchange electrons interact with a catalyst carry the same charges
1) 2) 3) CaCO3(s) = CaO (s) + CO2 (g) At 658 °C, the reaction reaches equilibrium. If PcO2 =2.17 atm, what is Kc value ? *Please report 3 significant figures. Numbers only, No unit. No scientific notation. The slope and intercept of an Arrhenius plot made for the first-order decomposition reaction are -7865.2 K and 26.098 at 303K, what is the value of the activation energy (KJ/mol) at this temperature? *Please report 3 significant figures. Numbers only, no unit....
Question 4 2 pts The minimum energy absorbed by reactants before they can be converted into products is called the dissociation energy orientation energy activation energy collision energy
D Question 2 1 pts Calcium carbonate, CaCO3, decomposes upon heating to form CO2 gas according to the following balanced chemical equation. When a sample of CaCO3 was decomposed in a test tube, 650 mL of CO2 gas was collected over water at 32.0 °C and the total pressure was 795 torr. The vapor pressure of water at 32.0°C is 36 torr and 1 atm = 760 torr. CaCO3(s) CaO(s) + CO2(g) How many grams of CO2 were collected?
Identify the spectator ions in the reaction: 2HNO3(aq) + CaCO3(s)—-Ca(NO3)2(aq) + H2O(l) + CO2(8) O NO3 O Cat2 он" co3 Question 20 5 pts Which of the following is a strong electrolyte? A HNO3(aq) B.NH.NO3(aq) C. AI(NO3)3(aq) D. All of the above OA A&C
answers to 5 and 6 D Question 5 2 pts Given the following reactions: 2S (s)+3 02 (3)- 2 SO3 (3) AH 790kJ s(s) +02 (g)-502 (g) ΔΗΡ-297 kJ What is the enthalpy value (in kJ) of the reaction in which sulfur dioxide is oxidized to sulfur trioxide? 2502 (g) + O2 (g) 2503 (g) ΔΗΡ ? D Question 6 2 pts Given the following reactions: CaCO3 (s) CaO (s) + CO2 (g) HP-178.1 kJ C (s, graphite) + O2...
Question 12 2 pts The reaction Na PO,+ Al(SO), AIPO, +NaySO, is an example of a reaction decomposition double replacement combination (or synthesis) single replacement Question 13 2 pts In the balanced equation 2H2 + O2 --> 2H2O, if you have 8 moles of H20, how many moles of Oz did you start with? 2 16 C 4 8 What is the mass % of oxygen in AIPO4? 52.5% 85.79 47.5% 1.91% Question 15 When is the only time you...