Directions: Read the paragraph below and then respond to the questions.Hydrogen peroxide is a liquid that breaks down and releases bubbles ofoxygen gas. By adding a catalyst, this chemical reaction occurs fasterand is completed more quickly. Patty uses a hydrogen peroxide productwith a catalyst to clean her contact lenses every night, and she has towait until morning for the bubbles to stop forming so she knows thereaction is finished. Patty wants to design an experiment to determine2the effect of changing the amount of a catalyst on how fast this reactionoccurs. Patty obtains a 500mL bottle of hydrogen peroxide and 25 gramsof the catalyst.3141516171) What should be the independent variable in Patty's experiment?18198Sheet1

It’s the variable that you are changing. For example. Two flower pots have the same soil same type…

Directions: Read the paragraph below and then respond to the questions. Hydrogen peroxide is a liquid that breaks down and releases bubbles of oxygen gas. By adding a catalyst, this chemical reaction occurs faster and is completed more quickly. Patty uses a hydrogen peroxide product with a catalyst to clean her contact lenses every night, and she has to wait until morming for the bubbles to stop forming so she knows the reaction is finished. Patty wants to design an experiment to determine the effect of changing the amount of a catalyst on how fast this reaction occurs. Patty obtains a 500mL bottle of hydrogen peroxide and 25 grams of the catalyst. 1) What should be the independent variable in Patty's experiment?

Directions: Read the paragraph below and then respond to the questions. Hydrogen peroxide is a liquid that breaks down and releases bubbles of oxygen gas. By adding a catalyst, this chemical reaction occurs faster and is completed more quickly. Patty uses a hydrogen peroxide product with a catalyst to clean her contact lenses every night, and she has to wait until morming for the bubbles to stop forming so she knows the reaction is finished. Patty wants to design an experiment to determine the effect of changing the amount of a catalyst on how fast this reaction occurs. Patty obtains a 500mL bottle of hydrogen peroxide and 25 grams of the catalyst. 1) What should be the independent variable in Patty's experiment?

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...

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There is a demonstration in which solid pieces of five elements – which are knownto be metals – were placed in water. The five metals were calcium, lithium, magnesium, potassium, and sodium.The pieces of metal were similar in size, and were timed to find out how long it took each piece to completely react with water.Potassium was the fastest to completely react with water. Sodium was second fastest. Magnesium was the slowest, by far. Explain these results by answering the following questions:1. What is the first step in the reactions of these metal atoms with water? 2. Among the periodic properties of elements (like atomic radius, ionization energy, electronegativity, etc.) …a. Which property most determines the speed of these reactions? b. Do values for this property increase or decrease as you go left to right across a period on the periodictable? What is it about the structures of atoms that causes this pattern? c. Do values for this property increase or decrease as you go down a…
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Mg + 2HCl → MgCl2 + H2 This experiment was performed two times. All values are valid to one decimal place. If the decimal place is not shown, add a ".0" Experiment Mass of Mg (mg) Starting Temperature (°C) Final Temperature (°C) 1 2 19.6 20.7 19.5 20.7 33 33.5 The previous page contained data from two experimental runs for the reaction between magnesium and hydrochloric acid. Mg+ 2HC! MgCl2 + H2 First, how many moles (n) of Mg reacted with the HCI? Use the average value of the two masses from your provided data set. Answer: 0.001658 I Mg + 2HCI MgCl2 + H2 Next, what is the amount of heat absorbed by the water (qsurr) in the experiment? Use the average AT from your data to calculate a single value for q. Report your answer in J. Remember to consult the lab manual and/or the video for any values you might need. Answer: Mg + 2HC! MgCl2 + H2 Finally, calculate A,H for this reaction and report your answer in kJ/mol. Answer:
14
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Magnesium metal, a shiny metallic gray metal, is burned in the presence of oxygen. A bright flame appears and a white brittle solid is formed. Full Question and Answer Choices attached in the picture
Can you please tell me what's the classify reaction for NaOH(aq)+HCI(aq). I've attached two images here. The one is for the record data and the other one is the test tube where we have to look for the reaction and then record data in our lab.
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