c20_m7_l01

alibri (Body) 12 A A Aa v AaBbCcDc AaBbCcDc AaBbC AABBCCC AaB AABBCCD IU abe x, x A ab T Normal T No Spac. Heading 1 Heading 2 Title Subtitle Font Paragraph Styles 3 6 IZICIt iniED 10 11 12 13 I 14 I- 15 16 . Chemical Equation Write a balanced equation that describes each of the following chemical reaction. 1. Acetylene gas, C2H2, burns in air forming gaseous carbon dioxide and, CO2, and water. Answer: 2C2H2 + 502 → 4CO2 + 2H20 (double displacement/Combustion reaction) 2. MnO2 + KOH + O2 → H20 + K2MNO4 3. FeCl2 + Cl2 → FeCl3 English (United States) Accessibility: Good to go a ENG REDMI NOTE 10 PRO | JHANG 01/06/2022 15: 12

Chemical Reaction Experiments: Coke and Mentos 1. The first bottle has 100 ml of coke and 1 piece of mentos. 2. The second bottle has 100 ml of coke and 3 pieces of mentos. 3. The third bottle has 100 ml of coke and 10 pieces of mentos. Give your observations and why chemical reactions occurred.

two partners were trying to solve the equation. Penny Said that the equation is balanced because there is only 1 Fe on both sides of the equation. But Alex disagrees. Who is correct and why? Write the CER to explain your answer. claim: Evidence: Reasoning

2 Fe + Oz →2 FeO 1. The chemical in the pink box is a... A. subscript B. coefficient C. reactant D. product 2. The number in the green box is a... A. subscript B. coefficient C. reactant D. product

Table 1. Heat of neutralization data   Sample 1 Sample 2 [1] Volume of HCl (mL) 50.1   50.2   [2] Temperature of HCl (°C) 24.3   25.0   [3] Volume of NaOH (mL) 49.9   50.1   [4] Temperature of mixture after reaction (°C) 31.0     Table 3. Heat of neutralization data and calculations   Sample 1 Sample 2 [1] Volume of HCl (mL) 50.1   50.2   [2] Temperature of HCl (mL) 24.3   25.0   [3] Volume of NaOH (mL) 49.9   50.1   [4] Temperature of mixture after reaction (°C) 31.0   31.7   Temperature difference (°C)         [5] Number of calories evolved (cal) enter a positive value         [6] Moles of H+ that were neutralized (mol)         [7] Calories evolved per mole of H+ (cal/mol)

Which of the following is always correct in considering the percentage yield of a reaction?     There are cases that percentage yield is greater than 100%. There are cases that percentage yield is greater than 100%. Theoretical yield is always greater than actual yield. Theoretical yield is always greater than actual yield. There is no relationship between actual and percent yield. There is no relationship between actual and percent yield. Percent yield is derived from pre and post lab experiments. Percent yield is derived from pre and post lab experiments. Actual yield is always greater than theoretical yield.    Which of the following is always correct in considering the percentage yield of a reaction?     There are cases that percentage yield is greater than 100%. There are cases that percentage yield is greater than 100%. Theoretical yield is always greater than actual yield. Theoretical yield is always greater than actual yield. There…

rmal text BIUA Arial 17.2 + . 1. . 2. | 3 | 4 in blue ink using complete sentences. 1. How is a physical change different from a chemical change? 2. How do you know a chemical reaction has happened? 3. Give an example of a chemical change. 4. How do you know this chemical reaction has taken place? 5. Name three different properties you can test before and after a chemical reaction to determine if a new substance was formed. 6. What does a catalyst do in a chemical reaction? 7. Are the number of atoms before and after a chemical reaction the same? Why? 8. What are two ways you can tell that the steel wool in the video underwent a chemical reaction? Support | Schoology Blog | PRIVACY POLI

A. REACTIONS OF HYDROCARBONS Three hydrocarbon samples were analyzed by various qualitative tests and the summary of their reactions is given in Table 1 below. Identify each unknown sample by matching the respective reaction profile with the given structures (A, B, or C). Table 1. Summary of Reactions of Hydrocarbon Samples   Sample Br2 in CCl4 KMnO4 in NaOH AgNO3 in NH3 1 Fading of reddish-brown color Brown precipitates No reaction 2 Fading of reddish-brown color Brown precipitates Silver precipitates 3 Fading of reddish-brown color No reaction No reaction           Sample Identity and Rationalization 1           2             3

Put approx. 10 mL of vinegar (HC2H3O2) in a short glass bottle and add 1 piece of rust-free small iron nail. Write your observation after 24 hours. A. Results and observation: 2 B. Balanced chemical equation: C Calculation Do

Give complete answers to all pre-lab questions in your laboratory notebook. (The reader should be able to interpret the answer without referring to the lab.) For numerical calculations, show all work with units in each step. Report final values to correct sig figs with correct units. 1. Explain the difference between equivalence points and end point. 2. Write the chemical formula of acetic acid and then calculate its molar mass. 3. Write the balanced chemical equation between acetic acid and sodium hydroxide solution. Include states for all reactants and products. 4. How many milliliters of 1.50 M NaOH are required to prepare 500.0 mL of 0.785 M NaOH solution? State the dilution equation and show all related work. 5. Our primary standard is potassium hydrogen phthalate. This is abbreviated as KHP, which is NOT its formula. a. Write the chemical formula of KHP and calculate its molar mass. b. Calculate the molarity of sodium hydroxide solution if 31.45 mL are needed to titrate 0.6570 g…

TYPES OF CHEMICAL REACTIONS DATA AND OBSERVATIONS

Part C Pbl Express your answer as an ion. Submit ΑΣΦ A chemical reaction does not occur for this question. Part D Request Answer AIP Express your answer as an ion. ? ΑΣΦ ? A chemical reaction does not occur for this question. Submit Request Answer

A. REACTIONS OF HYDROCARBONS Three hydrocarbon samples were analyzed by various qualitative tests and the summary of their reactions is given in Table 1 below. Identify each unknown sample by matching the respective reaction profile with the given structures (A, B, or C). Table 1. Summary of Reactions of Hydrocarbon Samples Sample Brz in CCI4 KMNO, in NaOH AGNO3 in NH3 Fading of reddish- brown color Brown precipitates 1 No reaction Fading of reddish- brown color Brown precipitates Silver precipitates 3 Fading of reddish- No reaction No reaction brown color H3C `CH3 H,C CH3 А Sample Identity and Rationalization 1

How many moles of W are needed to react with 1.0 mol of Ho in the hypothetic chemical reaction? 3W + 2Ho  →  2W3Ho   a. 0   b. 1.5   c. 2   d. 3   e. 1

Part B BH? Express your answer as a chemical formula. Fo ΑΣΦ 0 ? A chemical reaction does not occur for this question. Submit Request Answer

In the PHET simulation, click on the Game icon at the bottom of the screen. Balance the given chemical equations by changing the coefficients placed before each compound and then clicking Check. When a reaction is balanced correctly a yellow face will appear with a smile. After practicing with the game, balance the given chemical equations without use of the simulation. Drag the appropriate labels to their respective targets. Leave the target empty for a coefficient of 1. > View Available Hint(s) Reset Help 3 H,C,0. NaOH Na,C,0, H,0 5 Fe, 0, Fe CO 7

MISSED THIS? Read Section 3.10 (Pages 118 - 123); Watch IWE 3.18. Calculate the empirical formula for each of the following stimulants based on their elemental mass percent composition.

just need the balanced equation and the two other blanks. this is a pre test that isn’t graded.

What is the balanced net equation? It's unclear on my side. I only see 2 equations

According to the following reaction, how many grams of water will be formed upon the complete reaction of 31.3 grams of oxygen gas with excess hydrogen sulfide? 2H₂S(g) + 302(g) → 2H₂O(l) +2SO2(g) 9 water Submit Answer [Review Topics] [References] Use the References to access important values if needed for this question. Mastered Retry Entire Group 1 more group attempt remaining Cengage Learning Cengage Technical Support Previous Next Email Instructor Save and Exit

Multiple Choice. Read and analyze each question. Write the letter that corresponds to your answer on a separate sheet of paper. 1. Suppose your classmates will be visiting you. You decided to make burger for their snack. You have 20 burger patties and 17 burger buns, how many burgers you can make? а. 20 b. 17 с. 3 d. 37 2. Based on problem 1, what is the limiting reactant? a. burger buns b. burger patties c. your classmates d. your budget 3. Based on problem 1, how many burger patties are extra after your preparation for snack? с. 17 d. 3 a. 0 b. 37 For numbers 4-10. If 68 g of Zn reacts with 27.5 g of HC1. Use the chemical equation to answer the following questions below. Zn + 2HC1 ZnCl2 + H2 4. What is the molar mass of Zn? a. 65 g/mol b. 30 g/mol c. 27 g/ mol d. 68 g/ mol 5. What is the molar mass of HC1? a. 2 g/mol b. 16 g/mol 6. What coefficient is indicated in HCl? c. 36 g/mol d. 68 g/mol c. 4 d. 5 a. 2 b. 3 7. Which substance is limiting reactant? a. ZnCl2 b. HCl 8. Which…

Wrinte a balance equation for the following conversions. 16. Benzene to diphenyl 17. tert-Butyl bromide to isobutyl bromide 18. Aniline to phenylisocyanide 19. Styrene to benzoic acid 20. Oxidation of acetone

Octane burns according to the following equation:2C8H18+25O2→16CO2+18H2OCalculate the grams of CO2CO2 produced when 7.68 g of C8H18 are burned. A. 26.0 B. 21.3 C. 22.5 D. 23.7 E. 24.8

5 LAB QUESTIONS 5.1.1 Use the chemical equation below as a reference to answer part a and b of this question. Cuo(s) + 2CH3COOH(aq) Cu)+2CH3C00- 12+ + 2CH3COO¯ (aq) + H₂O (1) a) This reaction took place in what step in of the experiment? What observation leads you to believe this? This reaction took place when the penny was mixed with the acetic acid, this lead me to believe the structure of Cu^2+ which is aqueus and CH300^- ions which is also aq. b) Is copper being oxidized, reduced, or neither in this reaction? Explain. Copper being that it is a solid goes to a ag ion state, which tells me the copper is being reduced during the reaction.

In the PHET simulation, click on the Game icon at the bottom of the screen. Balance the given chemical equations by changing the coefficients placed before each compound and then clicking Check. When a reaction is balanced correctly a yellow face will appear with a smile. After practicing with the game, balance the given chemical equations without use of the simulation. Drag the appropriate labels to their respective targets. Leave the target empty for a coefficient of 1. • View Available Hint(s) Reset Help 3 NaOH O Na,C,0, 4 H,C,0, Fe, 0, Fe co2

4NH3 + 5O2-->4NO + 6H2OWhat is the total number of moles of H2O produced when 12 mole of NH3 is completely consumed?  A. 15 B. 20 C. 18 D. 24

Complete the ICF (BCA) table below for the hypothetical chemical reaction. All values are in moles. Enter all values with three digits (like shown) and include negative or positive signs for the "Change" row. A + 2B ЗС + D A C INITIAL 5.00 2.00 0.00 0.00 CHANGE

Question 49 In 1-2 sentences, explain what the Arrhenius equation tells us. Use the diagram to help describe what you mean. 100 °C - room temperature (300 °K) k, = Ae¯FalRT (373 °K) 4 kJ/mol (1 kcal/mol) 40 kJ/mol (10 kcal/mol) 80 kJ/mol (19 kcal/mol) → energy (E) Edit Format Table 12pt v Paragraph v BI Ų Av ev T? v * s fraction of molecules having energy E

chemistry reaction questions

2 KClO3 → 2 KCl + 3 O2How many moles of oxygen are produced when 6.7 moles of KClO3 decompose completely? * 1.0 mol 4.5 mol 6.7 mol 10.1 mol

Now let's use these total masses to figure out how much CO2 was generated by the experiment. Remember, the amount of CO2 generated is the mass lost after the reaction, all of the other products are still in the cups. Calculate both the grams and moles of CO2. Sample Data for Vinegar Lab Total Mass of Total Mass of Baking Soda & Baking Soda & g CO2 Produced by moles CO2 Produced by Vinegar Cups Vinegar Cups (g, post) Reaction Reaction (g, pre) -2 g 56.94 44.26 NaHCO3 -4 g 59.59 57.55 NaHCO3 -6 g 63.37 61.07 NaHCO3 -8 g 66.68 64.58 NaHCOз -10 g 69.81 67.66 NaHCO3

Law of conservation of mass within a chemical Equation Please write an balanced equation

HSC 258 Major Projec X Mind Tap - Cengage Lea X d%3D55750828934189288909969212&elSBN=9781305657571&snapshotld%3D219989 The illustration to the left represents a mixture of iodine ( purple ) and fluorine ( green ) molecules. If the molecules in the above illustration react to form IF3 according to the equation I +3 F2 2 IF3 , the limiting reagent is the number of IF, molecules formed is and the number of atoms/molecules in excess is Submit Answer