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e. Assume that you have used approximately the same mass of red grease pencil an write...
e. Assume that you have used approximately the same mass of red grease pencil and chalk...
e. Assume that you have used approximately the same mass of red grease pencil and chalk to write your name and answer the following questions: i. Calculate the molar mass of the red grease pencil. (Made of wax- CasHs2) 25112.011) 75261.008) = 352,66 and almol How many moles of wax were in your name? 0.025 almal x Imal = 0.0000 7089 352.66 na (7.088 x 10 fgling iii. How many molecules of wax were in your name? 22 1 mol...
C. MOLECULES IN YOUR NAME Procedure: Use analytical balances and record all your masses to 0.001g....
C. MOLECULES IN YOUR NAME Procedure: Use analytical balances and record all your masses to 0.001g. Show all your calculations with correct significant figures and units. 1. Record the mass of a chalk. 2. Write your full name (first, middle and last name) on the blackboard using this chalk. s 3. One the same balance, record the mass of the chalk again. Complete the table below. Grey areas denote calculated values. A Mass before writing (8) B Mass after writing...
please help woth calculations with #3,4,5. thank you! Data: Original mass of candle: 30.81 Mass after...
please help woth calculations with #3,4,5. thank you!
Data: Original mass of candle: 30.81 Mass after 5 minutes of combustion: 369 Mass of candle lost to combustion: 0:16 Calculations: A typical wax used for making candles is paraffin wax, which has the molecular formula CisHs2. With this information, answer the following questions using the data you recorded for your candle. Show your work! 1. What is the molar mass of candle wax, CzHsz? 25(12.011) +52(1.008)= 352.69 g/mol 2. How many...
C. MOLECULES IN YOUR NAME Procedure: Use analytical balances and record all your masses to 0.001g....
C. MOLECULES IN YOUR NAME Procedure: Use analytical balances and record all your masses to 0.001g. Show all you calculations with correct significant figures and units. 1. Record the mass of a chalk. 2. Write your full name (first, middle and last name) on the blackboard using this chall 3. One the same balance, record the mass of the chalk again. Complete the table below. Grey areas denote calculated values. A Mass before writing (g) 9.11 B Mass after writing...
lab How many molecules of water are you drinking if you were to consume 450mL bottle...
lab
How many molecules of water are you drinking if you were to consume 450mL bottle of H20? 1. What is the volume of water expressed in L and mL? 2. Calculate the mass of water in g (Hint: we did this in week 1) a. Express mass in mg and kg 3. Find/Calculate the molecular weight of water (H20) 4. Calculate how many moles of water are in the bottle (450mL) 5. Calculate how many molecules of water you...
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...
POGIL-Stoichiometry How do chemists use balanced chemical equations? got bit D 23 mosquitoes? 10 He got...
POGIL-Stoichiometry How do chemists use balanced chemical equations? got bit D 23 mosquitoes? 10 He got Mol-aria Why? Chemists use balanced chemical equations as a basis to calculate how much reactant is needed or product is formed in a reaction. This is called Stoichiometry- (stoi-key-ah-meh-tree) Another way of looking at it is using the mole ratio from the balanced equation and information about one compound in the reaction to determine information about another compound in the equation. A mole ratio...
I need each question answered. #6-12 6. Calculate the number of nitrogen atoms are present in...
I need each question answered. #6-12
6. Calculate the number of nitrogen atoms are present in each of the following quantities. A) 8.45x10 kg nitric acid B) 1280 dg of calcium nitrate 7. Write the empirical formula of the following compounds. A) H2S2 D) Co:PO B) ZnP203 E) C:H16012 C) C12H1oCl2 F) Au204 8. First balance the equation below the answer the questions that follow. ZrCN(aq) + Al2(S2O3)3(aq) — Zr2S2O3(s) + A) How many moles of ZnSO, of can form...
What would be for the mol reacted,, mol NH4X in sample, and yhr average molar mass?...
What would be for the mol reacted,, mol NH4X in sample, and yhr
average molar mass?
CALCULATIONS A. NaOH Preparation: Approximate molarity of NaOH 0.48 M B. NaOH Standardization: Trial # Mass of KHP E 1.7249 1.9569 1.8799 Volume of NaOH 18.58 L 20.58mLihat 19.71 mL Molarity of NaOH 0.4544 M 0.4654M 0. 3 M 0.4668M Average molarity of NaOH: 0.4668 M 0.4622 M C. Molar Mass of NH X Salt 1. Volume of NaOH 0.025 0.025 0.025L 2. Molarity...
please complete the questions has not answering with clarification of the answer to any page Name...
please complete the questions has not answering with
clarification of the answer to any page
Name Lab Section _Date The Mole Concept and Atomic Weights The purpose of this activity is to better understand the concepts of relative atomic mass, counting by weighing and the mole. Percent composition and average atomic mass are included. Part I. Relative Atomic Masses and the Mole - Early Method When John Dalton proposed his atomic theory, he stated that the atoms of each element...
e. Assume that you have used approximately the same mass of red grease pencil and chalk to write your name and answer the following questions: i. Calculate the molar mass of the red grease pencil. (Made of wax- CasHs2) 25112.011) 75261.008) = 352,66 and almol How many moles of wax were in your name? 0.025 almal x Imal = 0.0000 7089 352.66 na (7.088 x 10 fgling iii. How many molecules of wax were in your name? 22 1 mol...
C. MOLECULES IN YOUR NAME Procedure: Use analytical balances and record all your masses to 0.001g. Show all your calculations with correct significant figures and units. 1. Record the mass of a chalk. 2. Write your full name (first, middle and last name) on the blackboard using this chalk. s 3. One the same balance, record the mass of the chalk again. Complete the table below. Grey areas denote calculated values. A Mass before writing (8) B Mass after writing...
please help woth calculations with #3,4,5. thank you!
Data: Original mass of candle: 30.81 Mass after 5 minutes of combustion: 369 Mass of candle lost to combustion: 0:16 Calculations: A typical wax used for making candles is paraffin wax, which has the molecular formula CisHs2. With this information, answer the following questions using the data you recorded for your candle. Show your work! 1. What is the molar mass of candle wax, CzHsz? 25(12.011) +52(1.008)= 352.69 g/mol 2. How many...
C. MOLECULES IN YOUR NAME Procedure: Use analytical balances and record all your masses to 0.001g. Show all you calculations with correct significant figures and units. 1. Record the mass of a chalk. 2. Write your full name (first, middle and last name) on the blackboard using this chall 3. One the same balance, record the mass of the chalk again. Complete the table below. Grey areas denote calculated values. A Mass before writing (g) 9.11 B Mass after writing...
lab
How many molecules of water are you drinking if you were to consume 450mL bottle of H20? 1. What is the volume of water expressed in L and mL? 2. Calculate the mass of water in g (Hint: we did this in week 1) a. Express mass in mg and kg 3. Find/Calculate the molecular weight of water (H20) 4. Calculate how many moles of water are in the bottle (450mL) 5. Calculate how many molecules of water you...
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...
POGIL-Stoichiometry How do chemists use balanced chemical equations? got bit D 23 mosquitoes? 10 He got Mol-aria Why? Chemists use balanced chemical equations as a basis to calculate how much reactant is needed or product is formed in a reaction. This is called Stoichiometry- (stoi-key-ah-meh-tree) Another way of looking at it is using the mole ratio from the balanced equation and information about one compound in the reaction to determine information about another compound in the equation. A mole ratio...
I need each question answered. #6-12
6. Calculate the number of nitrogen atoms are present in each of the following quantities. A) 8.45x10 kg nitric acid B) 1280 dg of calcium nitrate 7. Write the empirical formula of the following compounds. A) H2S2 D) Co:PO B) ZnP203 E) C:H16012 C) C12H1oCl2 F) Au204 8. First balance the equation below the answer the questions that follow. ZrCN(aq) + Al2(S2O3)3(aq) — Zr2S2O3(s) + A) How many moles of ZnSO, of can form...
What would be for the mol reacted,, mol NH4X in sample, and yhr
average molar mass?
CALCULATIONS A. NaOH Preparation: Approximate molarity of NaOH 0.48 M B. NaOH Standardization: Trial # Mass of KHP E 1.7249 1.9569 1.8799 Volume of NaOH 18.58 L 20.58mLihat 19.71 mL Molarity of NaOH 0.4544 M 0.4654M 0. 3 M 0.4668M Average molarity of NaOH: 0.4668 M 0.4622 M C. Molar Mass of NH X Salt 1. Volume of NaOH 0.025 0.025 0.025L 2. Molarity...
please complete the questions has not answering with
clarification of the answer to any page
Name Lab Section _Date The Mole Concept and Atomic Weights The purpose of this activity is to better understand the concepts of relative atomic mass, counting by weighing and the mole. Percent composition and average atomic mass are included. Part I. Relative Atomic Masses and the Mole - Early Method When John Dalton proposed his atomic theory, he stated that the atoms of each element...
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