Part A Add coefficients to balance the chemical equations shown. KOH(s)+ CO2(g)→KHCO3(s) Express your answer as a chemical equation. Identify all of the phases in your answer. ха xb ΑΣΦ a a אן ماه 99 b b ↑ 0 ? ☑

For NO2(g)NO2(g) find the value of ΔH∘fΔHf∘. Express your answer using four significant figures.   Write a balanced equation depicting the formation of one mole of SO3(g)SO3(g) from its elements in their standard states. Express your answer as a chemical equation. Identify all of the phases in your answer.     For SO3(g)SO3(g) find the value of ΔH∘fΔHf∘. Express your answer using four significant figures.     Write a balanced equation depicting the formation of one mole of NaBr(s)NaBr(s) from its elements in their standard states. Express your answer as a chemical equation. Identify all of the phases in your answer.   For NaBr(s)NaBr(s) find the value of ΔH∘fΔHf∘. Express your answer using four significant figures.     Write a balanced equation depicting the formation of one mole of Pb(NO3)2(s)Pb(NO3)2(s) from its elements in their standard states. Express your answer as a chemical equation. Identify all of the phases in your answer.       For…

Ca(s)+Br2(l)⟶CaBr2(s)  Express your answer as a chemical equation. Identify all of the phases in your answer.

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MISSED THIS? Watch IWE: Half-Reaction Method of Balancing Aqueous Redox Equations in Acidic Solution Read Section 20.2. You can click on the Review link to access the section in your e Text. Balance each of the following redox reactions occurring in acidic solution. Part A VO₂ (aq) + CIO₂ (aq) → VO²+ (aq) + CIO₂(g) Express your answer as a chemical equation. Identify all of the phases in your answer. ΑΣΦΑ 2VO₂ (aq) + 4H (aq) + ClO₂ (aq)→2VO²+ (aq) A chemical reaction does not occur for this question. Submit Previous Answers Request Answer ? * Incorrect; Try Again; 2 attempts remaining Part B SOUTEL ravic MnO, (aq) + SO3² (aq) → Mn²+ (aq) + SO₁² (aq) Express your answer as a chemical equation. Identify all of the phases in your answer. | ΑΣΦ MnO4 (aq) +5SO₂ (aq) +5H₂O(1)→Mn₂ + (aq) A chemical reaction does not occur for this question. ?

Ten pounds of CO2 at room temperature (80 °F) are stored in a fire extinguisher that has a volume of 4.0 ft3. How much heat must be transferred from the extinguisher so that 40 % of the CO2 becomes liquid?

A)C(s)+H2O(g)→Δ Although heat is required for this reaction, do not include the symbol Δ in your answer. Express your answer as a chemical equation. Identify all of the phases in your answer.   B)CuO(s)+CO(g)→ Express your answer as a chemical equation. Identify all of the phases in your answer.

12.0 g of cream at 23.0 °C are added to an insulated cup containing 100.0 g of coffee at 78.1 °C. Calculate the equilibrium temperature of the coffee. You may assume no heat is lost to the cup or surroundings, and that any physical properties of cream and coffee you need are the same as those of water. Be sure your answer has 3 significant digits. 0 °C 0 x10 X

Au2O(s)+C(s)→Au(s)+CO(g)Au2O(s)+C(s)→Au(s)+CO(g) Express your answer as a chemical equation. Identify all of the phases in your answer.   Balance each chemical equation.

A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains 9.40 kg of water at 38.5 °C. During the reaction 107. kJ of heat flows out of the flask and into the bath. Calculate the new temperature of the water bath. You can assume the specific heat capacity of water under these conditions is 1 4.18 J∙g¯¹·K¯¹. Be sure your answer has the correct number of significant digits. °C x10