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1. Multiple proportions You try to make ferric oxide, Fe203, in a laboratory. You use exactly...
1. Vanadium and oxygen react to make vanadium (V) oxide. How many grams of vanadium and...
1. Vanadium and oxygen react to make vanadium (V) oxide. How many grams of vanadium and oxygen are needed to make 85 g of vanadium (V) oxide? Ans. 48 g of vanadium and 37 g of oxygen 2. Iron(III) oxide can be converted to iron metal and water by heating it with hydrogen gas. If 100. g of iron(III)oxide is reacted with 2.00 g of hydrogen gas, how much iron metal will be formed? Ans. 36.9 g Fe 3. How...
What Metal Oxide Has been formed? Final Lab Submission Purpose: (5 points) In 2-3 sentences concisely state the pu...
What Metal Oxide Has been formed? Final Lab Submission Purpose: (5 points) In 2-3 sentences concisely state the purpose of the laboratory and what knowledge this lab helped to further develop Experimental Data: (10 points) List all data that was collected from this experiment to help you determine the molecular formula of the metal oxide that you formed. Be sure that you clearly label what each value represents and includes the correct significant figures and units. Example: Mass of the...
VO V205 1. Vanadium and oxygen react to make vanadium (V) oxide. How many grams of vanadium and - oxygen are needed...
VO V205 1. Vanadium and oxygen react to make vanadium (V) oxide. How many grams of vanadium and - oxygen are needed to make 85 g of vanadium (V) oxide? Ans. 48 g of vanadium and 37 g of oxygen. 2( 50, 942) +5lis.499 ) 85g U2O5 x 1 mol v2 og 181.879 gvos k 181.87ague5 Imol v₂O5 2. Iron(III) oxide can be converted to iron metal and water by heating it with hydrogen gas. If 100 g of iron(III)...
Pestlab questions 1. Knowing what you do about magnesium and oxygen, what type of compound (lonie...
Pestlab questions 1. Knowing what you do about magnesium and oxygen, what type of compound (lonie or covalent) should form between these two elements? If you expect an ionic compound, comment on what ions will be bonding together, and in what ratio you expect based on their charges. Also, if that wasn't the ratio you obtained in your experiment, comment on possible sources of error 2. A student starts with a 3.96 sample of manganese (Mn, molar mass is 54.94...
5. Imagine that you have discovered a new way of making synthetic rubies by combining solid...
5. Imagine that you have discovered a new way of making synthetic rubies by combining solid aluminum and oxygen gas according to the reaction below. 4 Al+3 O2 + 2 Al2O3 a. If have 10 moles of Al, and an unlimited amount of Oz, how many moles of Al2O3 could you make? b. If have 10 moles of O2, and an unlimited amount of Al, how many moles of Al2O3 could you make? c. If you were to combine 10.0...
Chapter 5 and Chapter 10 Problem solving (please practice the following questions and make sure that you understand...
Chapter 5 and Chapter 10 Problem solving (please practice the following questions and make sure that you understand the principles behind: you can find Ar from textbook or website I. A 145 g sample of copper metal at 100.0°C is placed into 250.0 g of water at 25.0°C in a calorimeter. When the system reaches thermal equilibrium, the temperature of the water in the calorimeter is 28.8°C. Assume the calorimeter is perfectly insulated. What is the specific heat capacity of...
Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the...
Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) 1) One mole of any substance contains Avogadro's number of particles of that substance. What is the numerical value of Avogadro's number? A) 12.01 23 Avagrans t Male aton 6022 x1o atums B) 6.022 x 1023 C) 6.022 x 10-23 D) 1.661 x10-24 E) 1.00 x10-14 2) What is the mass of 4.00 moles of helium, the gas commonly used to fill...
Date: Period: Name: You Try... 4. Given the following chemical equation 4P + 50; → 2...
Date: Period: Name: You Try... 4. Given the following chemical equation 4P + 50; → 2 PO (a) How many moles of P,0, are formed from 3.4 moles of O,? SHOW the math below (b) How many moles of P are needed to react with 30,1 moles of O,? SHOW the math below. 5. Aluminum reacts with copper(ll) chloride to make aluminum chloride and copper (a) Write the balanced equation (b) Given 6 moles of Cuch, how many moles of...
Separating a Mixture, Recrystallization, pre-lab assignment could you also explain why you chose that substance for...
Separating a Mixture, Recrystallization, pre-lab
assignment
could you also explain why you chose that substance for the empty
spaces and question marks
EXPERIMENT 4 Pre-Lab Assignment Separating a Mixture, Recrystalliration Name Date 1. Complete the following flowchart which shows how to separate a mixture of sand, sodium chloride and acetanilide. Notice that after a separation process (a down arrow) the filtered solids are shown on the left and the filtrate (the liquid) is shown on the right. The terminal step...
Part A 1. If you had used more methylene chloride in each step, you could have...
Part A 1. If you had used more methylene chloride in each step, you could have extracted more caffeine. Explain why you did not. Hint - What step would have taken longer (Hint: not drying). PART A Mass of Beaker & Caffeine Mass of Beaker 167.750g 67.6809 Mass of Caffeine 0.0 75 Calculations. Show your work and circle the answers. Mass of caffeine recovered: 012919 b) Actual:.07 % caffeine recovered: a) Predicted: 9 7:213% b) Actual: 92.105% PART B Unknown...
1. Vanadium and oxygen react to make vanadium (V) oxide. How many grams of vanadium and oxygen are needed to make 85 g of vanadium (V) oxide? Ans. 48 g of vanadium and 37 g of oxygen 2. Iron(III) oxide can be converted to iron metal and water by heating it with hydrogen gas. If 100. g of iron(III)oxide is reacted with 2.00 g of hydrogen gas, how much iron metal will be formed? Ans. 36.9 g Fe 3. How...
What Metal Oxide Has been formed? Final Lab Submission Purpose: (5 points) In 2-3 sentences concisely state the purpose of the laboratory and what knowledge this lab helped to further develop Experimental Data: (10 points) List all data that was collected from this experiment to help you determine the molecular formula of the metal oxide that you formed. Be sure that you clearly label what each value represents and includes the correct significant figures and units. Example: Mass of the...
VO V205 1. Vanadium and oxygen react to make vanadium (V) oxide. How many grams of vanadium and - oxygen are needed to make 85 g of vanadium (V) oxide? Ans. 48 g of vanadium and 37 g of oxygen. 2( 50, 942) +5lis.499 ) 85g U2O5 x 1 mol v2 og 181.879 gvos k 181.87ague5 Imol v₂O5 2. Iron(III) oxide can be converted to iron metal and water by heating it with hydrogen gas. If 100 g of iron(III)...
Pestlab questions 1. Knowing what you do about magnesium and oxygen, what type of compound (lonie or covalent) should form between these two elements? If you expect an ionic compound, comment on what ions will be bonding together, and in what ratio you expect based on their charges. Also, if that wasn't the ratio you obtained in your experiment, comment on possible sources of error 2. A student starts with a 3.96 sample of manganese (Mn, molar mass is 54.94...
5. Imagine that you have discovered a new way of making synthetic rubies by combining solid aluminum and oxygen gas according to the reaction below. 4 Al+3 O2 + 2 Al2O3 a. If have 10 moles of Al, and an unlimited amount of Oz, how many moles of Al2O3 could you make? b. If have 10 moles of O2, and an unlimited amount of Al, how many moles of Al2O3 could you make? c. If you were to combine 10.0...
Chapter 5 and Chapter 10 Problem solving (please practice the following questions and make sure that you understand the principles behind: you can find Ar from textbook or website I. A 145 g sample of copper metal at 100.0°C is placed into 250.0 g of water at 25.0°C in a calorimeter. When the system reaches thermal equilibrium, the temperature of the water in the calorimeter is 28.8°C. Assume the calorimeter is perfectly insulated. What is the specific heat capacity of...
Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) 1) One mole of any substance contains Avogadro's number of particles of that substance. What is the numerical value of Avogadro's number? A) 12.01 23 Avagrans t Male aton 6022 x1o atums B) 6.022 x 1023 C) 6.022 x 10-23 D) 1.661 x10-24 E) 1.00 x10-14 2) What is the mass of 4.00 moles of helium, the gas commonly used to fill...
Date: Period: Name: You Try... 4. Given the following chemical equation 4P + 50; → 2 PO (a) How many moles of P,0, are formed from 3.4 moles of O,? SHOW the math below (b) How many moles of P are needed to react with 30,1 moles of O,? SHOW the math below. 5. Aluminum reacts with copper(ll) chloride to make aluminum chloride and copper (a) Write the balanced equation (b) Given 6 moles of Cuch, how many moles of...
Separating a Mixture, Recrystallization, pre-lab
assignment
could you also explain why you chose that substance for the empty
spaces and question marks
EXPERIMENT 4 Pre-Lab Assignment Separating a Mixture, Recrystalliration Name Date 1. Complete the following flowchart which shows how to separate a mixture of sand, sodium chloride and acetanilide. Notice that after a separation process (a down arrow) the filtered solids are shown on the left and the filtrate (the liquid) is shown on the right. The terminal step...
Part A 1. If you had used more methylene chloride in each step, you could have extracted more caffeine. Explain why you did not. Hint - What step would have taken longer (Hint: not drying). PART A Mass of Beaker & Caffeine Mass of Beaker 167.750g 67.6809 Mass of Caffeine 0.0 75 Calculations. Show your work and circle the answers. Mass of caffeine recovered: 012919 b) Actual:.07 % caffeine recovered: a) Predicted: 9 7:213% b) Actual: 92.105% PART B Unknown...
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