Answer questions 4 & 5 please!!! ### Chemical Reactions and Calorimetry Experiment#### 4) Verifying an Exothermic ReactionTo determine if a chemical reaction is exothermic, you need to measure the temperature change that occurs during the reaction. An exothermic reaction releases heat, causing the temperature of the surroundings to increase. Here's a step-by-step procedure for testing this statement:1. **Prepare the Reaction**: Set up a controlled environment where the chemical reaction will take place.2. **Measure Initial Temperature**: Use a thermometer to measure the initial temperature of the surrounding system (reactants or solution where the reaction will occur).3. **Initiate the Reaction**: Begin the chemical reaction.4. **Observe and Measure**: Continuously monitor and record the temperature of the surroundings during the reaction.5. **Compare Temperatures**: Compare the initial and final temperatures. An increase in temperature indicates an exothermic reaction. #### 5) Calculating Food Calories Using CalorimetryA student wants to find the number of food Calories in their favorite snack by burning it under a can of water to measure energy transfer. Here are the details and calculations:**Given data:**- Mass of water (M): 200g- Water temperature before burning (Ti): 25°C- Water temperature after burning (Tf): 45°C- Specific Heat (Cp) of water: 1 chemistry calorie/g°C**Step-by-Step Calculation:**a. **Calculate the Heat Transferred to Water**The formula to calculate the heat transferred (Q) is:\[ Q = M \times Cp \times (Tf - Ti) \]1. **Substitute the values into the formula**: \[ Q = 200g \times 1 \frac{\text{cal}}{\text{g°C}} \times (45°C - 25°C) \]2. **Calculate the temperature change**: \[ (45°C - 25°C) = 20°C \]3. **Calculate the heat transferred**: \[ Q = 200g \times 20°C \] \[ Q = 4000 \text{calories} \]Thus, **4000 chemistry calories** of heat were transferred to the water by burning the snack. This experiment and calculation reflect the fundamental principles of calorimetry used to determine the energy content in food items.

Answered: Image /qna-images/answer/79588980-ab9e-4724-92a0-eea5b5706eb3.jpg

4) You are told that a chemical reaction is exothermic. How could you test whether the statement is true? 5) A student wants to know the number of food Calories in their favorite snack. They burn their snack under a can of water to measure the energy transfer and record the following information: Mass of water: 200g Water temperature before burning (T₁): 25°C. Water temperature after burning (T): 45°C. The Specific Heat (Cp) of water is 1 chemistry calorie/g °C a. Calculate the number of chemistry calories of Heat transferred to water using the following formula: Q= M * Cp * (T¢ -T)

4) You are told that a chemical reaction is exothermic. How could you test whether the statement is true? 5) A student wants to know the number of food Calories in their favorite snack. They burn their snack under a can of water to measure the energy transfer and record the following information: Mass of water: 200g Water temperature before burning (T₁): 25°C. Water temperature after burning (T): 45°C. The Specific Heat (Cp) of water is 1 chemistry calorie/g °C a. Calculate the number of chemistry calories of Heat transferred to water using the following formula: Q= M * Cp * (T¢ -T)

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

doug began preparing laboratory surface disinfectant from chlorine bleach. he put on a chemical resistant apron and gloves and then removed the bleach container from the special chemical cabinet. he carefully placed the container on the laboratory benchtop and began to add the chlorine bleach to distilled water. nearby workers began complaining of burning eyes. doug was reprimanded by the supervisor. Explain why.
5k MEOH
Solve fast and accurate,
Consider this reaction diagrams where R is reactants and P is products. What would the reaction diagram look like if a catalyst was added?
2 NO₂(g) → N₂ O₁ (g) O 2511041 O > 0 O ▲,$, O A.S. Q Search 9999 100 # on D KELIAV G 24 G
||| O NAMING AND DRAWING ORGANIC MOLECULES Naming normal alkanes Name these organic compounds: 43°F Mostly sunny Explanation structure H I H-C-H H H H H H H H 1 | | | | | | | -C. C-C H-C-C. | | H H Check | 1 I H H H | С-Н | H H н-с | H H H 1 -C-H X Q Search name Ś [***] 0/3 a Jessica V ? 0 000 B © 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibility 8:50 PM 4/23/2023 نشاء +
Pls show work, will rate! A,B,C
For the reaction 2NO + Cl₂ Match the appropriate rate law to each postulated mechanism. A Rate = K[NO]²[Cl₂]² B Rate = k[Cl₂]² C Rate = K[NO][Cl₂] D Rate = K[NO]²[Cl₂] Rate = K[NO]² F Rate = k[Cl₂] 2NOCI NO + Cl₂ 2NOCI2 NOCI 3 G Rate = H Rate = K[NO] I None of the above K[NO][Cl₂]² NO + Cl₂ NOCI₂ + NO NOCI₂ →→NOCI 3 + NOCI slow → NOCI + Cl₂ fast Cl₂ → 2CI CI + NO fast equilibrium NOCI2 fast equilibrium 2NOCI slow slow NOCI fast
A Н Н H3C H H Н B CH₁ Lit cu H Br C A Et₂O + ?? 0°C BrMg. В СО BrMg. HH Н.С 2 с CH₂ BrMg. D
Calculate the value of delta H. Show your work. Energy Diagram Reaction Time (min) 009 007 001 Potential Energy (kJ)
10. CHALLENGE. Calculate AHrxn. N2H4(1) + O2(g) → N2(g) + 2 H₂O(1) given: 2 NH3(g) + 3 N2O(g) → 4 N2(g) + 3 H2O(D) N2O(g) + 3 H2(g) → N2H4(D) + H₂O(1) ->> 2 NH3(g) + 12 O2(g) → N2H4(1) + H₂O(1) H₂(g) + O2(g) → H₂O(n) AH = -1013 kJ ΔΗ = -317 kJ AH = -142.9 kJ ΔΗ = -285.8 kJ
4 Why would the chemical equation 1 B2(CO3)3 →1 B2O3+3 CO2 be considered “wrong”?