Identify the effect of the condition on the indicated parameter. 1. A wet pipette was used to transfer 10.00 mL of 1M HNO3 in the determination of ΔHrxn. [magnitude of ΔHrxn] a. Increase b. Decrease c. No Effect
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Identify the effect of the condition on the indicated parameter.
1. A wet pipette was used to transfer 10.00 mL of 1M HNO3 in the determination of ΔHrxn. [magnitude of ΔHrxn]
a. Increase
b. Decrease
c. No Effect
2. The thermometer and stopper were inserted to the test tube 5 minutes after adding the base in the calibration part. [Ccal]
a. Increase
b. Decrease
c. No Effect
*Please provide a concise explanation.
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- Identify the effect of the condition on the parameters. Write increase, decrease, or no effect. And Explain. A. The test tube used in the determination of the ΔHrxn for nitric acid was still wet with water. [ magnitude of ΔHrxn] B. The thermometer and stopper were inserted to the test tube 5 minutes after adding the base in the calibration part. [Ccal]Identify the effect of the condition on the indicated parameter. 1. The test tube used in the determination of the ΔHrxn for nitric acid was still wet with water. [ magnitude of ΔHrxn] a. Increase b. Decrease c. No Effect 2. The actual concentration of the sodium hydroxide used in the calibration part of the experiment was lower than the stated value. [Ccal] a. Increase b. Decrease c. No Effect 3. The actual concentration of the sodium hydroxide used in the calibration part of the experiment was lower than the stated value. However, the NaOH solution used in the determination of ΔHrxn was of the correct concentration. [magnitude of ΔHrxn] a. Increase b. Decrease c. No Effect *Please provide a concise explanation.← → C 11 app.101edu.co STARTING AMOUNT X 2 What is the change in enthalpy when 1.50 moles of H₂ are reacted with an excess O₂ of according to the following balanced chemical reaction: -381 mol H₂ ADD FACTOR x( ) 381 g 0₂ 2 -572 kJ Question 8 of 19 2 H₂(g) + O₂(g) → 2 H₂O(1) -429 ΔΗ = -572 kJ 1.50 g H₂O 32.0 1 ANSWER mol O₂ 429 2 mol H₂O RESET J 3 18.02 2.02 g H₂ M Update: Submit +
- Identify the effect of the condition on the parameter. Write increase, decrease, or no effect. And Explain. A. The actual concentration of the sodium hydroxide used in the calibration part of the experiment was lower than the stated value. [Ccal] B. The actual concentration of the sodium hydroxide used in the calibration part of the experiment was lower than the stated value. However, the NaOH solution used in the determination of ΔHrxn was of the correct concentration. [magnitude of ΔHrxn] C. A wet pipette was used to transfer 10.00 mL of 1M HNO3 in the determination of ΔHrxn. [magnitude of ΔHrxn]By HGG) +3029)-B20g6) + 3H20G) AH=-2035 kJ What is AH when 10-0g 82H6 is.mixed with 10-0g 02 ?esc W Н H: | PF | Pr | HGwGwGta WHGW (3 il MOC2 |O|A| app.101edu.co Week 4 Lab 3....docx If 50.5 g of KBr are dissolved in 400.0 g of water at 25.0 °C in an insulated container, a temperature change is observed. The AH of solution of KBr is 19.9 kJ/mol. Assuming that the specific heat of the solution is 4.184 J/(g °C), and that no heat is gained or lost by the container, what will be the final temperature of the solution? 1 F1 Q 2 F2 W 3 20 F3 W E की व 4 000 DOO F4 R do L % 5 F5 Question 16 of 28 MacBook Air T 6 F6 & Y 7 F7 U DII 8 FB
- Recall that the formula for ΔHrxn = [(-Ccal)(moles of limiting reactant)/(ΔT)]If the actual concentration of the sodium hydroxide used in the calibration part of the experiment was lower than the stated value, will the value of Ccal increase, decrease, or remain the same? Please explain. How about if the actual concentration of the sodium hydroxide used in the calibration part of the experiment was lower than the stated value. However, the NaOH solution used in the determination of ΔHrxn was of the correct concentration. Will the magnitue of ΔHrxn increase, decrease, or remain the same? Please explain.Calculate E°cell in V for a reaction with K. = 6.99 x 10-15 and n = 4. Your Answer: Answer unitsCHOICES: Increase, Decrease, No Effect and WHY 1. The actual concentration of the sodium hydroxide used in the calibration part of the experiment was lower than the stated value. However, the NaOH solution used in the determination of ΔHrxn was of the correct concentration. [magnitude of ΔHrxn] 2. The test tube used in the determination of the ΔHrxn for nitric acid was still wet with water. [ magnitude of ΔHrxn] 3. The actual concentration of the sodium hydroxide used in the calibration part of the experiment was lower than the stated value. [Ccal] 4. A wet pipette was used to transfer 10.00 mL of 1M HNO3 in the determination of ΔHrxn. [magnitude of ΔHrxn] 5. The thermometer and stopper were inserted to the test tube 5 minutes after adding the base in the calibration part. [Ccal]
- can someone find the [OH-] at T hot, the Ksp at T hot, the delta G for T hot, the delta S and delta H and % error given the following values Temp Room: 20.1 deg Cel Temp Hot: 30.7 deg Cel pH Room: 12.78 pH Hot: 12.44 calculate the value given the following standard state entropies S f Ca(OH)2 (aq) = -74.6 J/mol K S f Ca(OH)2 (s)= 83.39 J /mol KA geochemist in the field takes a 9.0 mL sample of water from a rock pool lined with crystals of a certain mineral compound X. He notes the temperature of the pool, 15. C, and caps the sample carefully. Back in the lab, the geochemist first dilutes the sample with distilled water to 400. mL.. Then he filters and evaporates all the water under vacuum. Crystals of X are left behind. The researcher washes, dries and weighs the crystals. They weigh 0.045 g. Using only the information above, can you calculate the solubility of Xin water at 15.° C7 If you said yes, calculate it. Be sure your answer has a unit symbol and 2 significant digits. yes O no 0 0.9 H ロ･ロ X 0 GΔΗ, ΔU = kJ. mol-1 IVE| ΑΣΦ ? Assume complete 2NaOH(aq) Express your answers in kilojoules per mole to one decimal place separated by a comma. dissociation of NaOH, H₂SO4, and Na2SO4. + H₂SO4 (aq) → Na2SO4 (aq) + 2H₂O(1) Tollowing reactions. Substance CO(g) CH4 (g) CH3OH(g) CH3COOH(1) HCl(g) H₂(g) H₂O(g) H₂O(1) H+ (aq) OH(aq) N₂(g) NH3(g) NO(g) NO₂(g) O₂(g) Na+ (aq) SO4²- (aq) TiCl4 (1) TiO₂ (s) ΔΗ (kJ. mol-¹) -110.5 -74.6 -201.0 -484.3 -92.3 0 -241.8 -285.8 0 -230.0 0 -45.9 91.3 33.2 0 -240.1 -909.3 -804.2 -944.0