You make a solution of 0.08 moles of a single molecule in water. The resulting rotation was found to be +13.3. Your lab...
You make a solution of 0.08 moles of a single molecule in water. The resulting rotation was found to be +13.3. Your lab partner makes a different solution of 0.08 moles of your molecule and 0.2 moles of its enatiomer to the same concentration as your solution. What is the observed rotation of your partner's mixture? Show all work
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You make a solution of 0.08 moles of a single molecule in water. The resulting rotation was found to be +13.3. Your lab...
4. (6 pts) (a) You make a solution of 0.08 moles of a single molecule in...
4. (6 pts) (a) You make a solution of 0.08 moles of a single molecule in water. The resulting taon was found to be +13.3° Your lab partner makes a different solution of 0.08 moles of your molecule and 0.2 moles of its enantiomer to the same concentration as your solution. What is the observed rotation of your partner's mixture? Show all work. No work = no credit. (b) (3 pts) How would your answer to (a) change if, instead...
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...
Your lab partner asks you to make 100 mL of a 1.50 M HCl solution for...
Your lab partner asks you to make 100 mL of a 1.50 M HCl solution for an experiment she would like to do. If ΔHsolution is -74.84 kJ/mol for hydrochloric acid, what would be the final temperature of a solution prepared by dissolving the necessary amount of HCl in 100.0 mL of room temperature (23.0 oC) water?
As part of Lab 11 you will make and standardize a solution of NaOH(aq). Suppose in the lab you measure the solid NaOH an...
As part of Lab 11 you will make and standardize a solution of NaOH(aq). Suppose in the lab you measure the solid NaOH and dissolve it into 100.0 mL of water. You then measure 0.1993 g of KHP (204.22 g/mol) and place it in a clean, dry 100-mL beaker, and then dissolve the KHP in about 25 mL of water and add a couple of drops of phenolphthalein indicator. You titrate this with your NaOH(aq) solution and find that the...
2.95g of sodium bicarb how much water to add to make 1.0 M solution 4.25g of...
2.95g of sodium bicarb how much water to add to make 1.0 M solution 4.25g of Sodium carbonate how much water to add to make 1.0 M solution. Please show all the work very clearly even little steps to help me understand. "You need to create a 1.0 M solution of sodium bicarbonate (NaHCO3 – baking soda). Your lab kit has a bag of sodium bicarbonate to use for this portion of the experiment. Write “sodium bicarbonate” on a sample...
what is number 3 and 4? thank you. TT 3. A solution of [FeSCN2] is found...
what is number 3 and 4? thank you.
TT 3. A solution of [FeSCN2] is found to have 23% transmittance at 447 nm. If the molar absorption coefficient (e) is 4400 ( M cm) at y 447 nm, what is the concentration of [FeSCN] in the solution? Assume a 1 cm path length. (Show all work.) 4. A student mixes 5.00 mL of 0.0020 M Fe(NO.), with 3.00 mL of 0.0020 M KSCN Solution and 2.00 mL water at a...
Please help with pre-lab questions. Pre-Lab Questions: 1. A sample of 2-butanol has a specific rotation...
Please help with pre-lab questions.
Pre-Lab Questions: 1. A sample of 2-butanol has a specific rotation of +3.25. Determine the optical purity (%ee) and percent composition of this sample (see Mohrig section 17.4). The specific rotation of pure (+)-2-butanol is +13.0°. 2. The equation for the formation of the diastereomeric salts is shown in the background information (performed in Part A of the procedure). Write this chemical equation in your notebook, then ALSO write a balanced equation for the formation...
Chemistry 2A Lab 13: Solution Calculations Introduction This lab involves sample calculations using various concentration units....
Chemistry 2A Lab 13: Solution Calculations Introduction This lab involves sample calculations using various concentration units. This lab will work with the following types of concentration units: % mass, % volume, % mass/volume, and molarity. A solution is the sum total of the solute and solvent. % mass= mass solute mass solution -100 volumesolute .100 % volume- volume solution % mass/volume mass solute volumesolution -100 Molarity moles solute liters solution The dilution of a liquid requires the addition of more...
3. To make a buffer solution, you can start with a solution of a known number...
3. To make a buffer solution, you can start with a solution of a known number of moles of the base form (A) and add a strong acid until you have neutralized the correct number of moles of the base to have the correct A HA ratio for the buffer you require. For the example using HF in the background information: a. How many moles of the base form (A) are required to start? HINT: The acid form (HA) will...
Need help with these both please Two aqueous soiutions are prepared in which one contains 0.275 moles of the nonvolatile so glucose (ClO dissolved in 2500.00 g of water and the other solution con...
Need help with these both please
Two aqueous soiutions are prepared in which one contains 0.275 moles of the nonvolatile so glucose (ClO dissolved in 2500.00 g of water and the other solution contains 0.275 moles of the nonvolatile solute CaCI, dissolved in 2500.00 g of water. Describe how each of the colligative properties listed below would be affected for each of these solutions (for each olatile solut 4. is a decrease or an increase then identify which of the...
4. (6 pts) (a) You make a solution of 0.08 moles of a single molecule in water. The resulting taon was found to be +13.3° Your lab partner makes a different solution of 0.08 moles of your molecule and 0.2 moles of its enantiomer to the same concentration as your solution. What is the observed rotation of your partner's mixture? Show all work. No work = no credit. (b) (3 pts) How would your answer to (a) change if, instead...
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...
what is number 3 and 4? thank you.
TT 3. A solution of [FeSCN2] is found to have 23% transmittance at 447 nm. If the molar absorption coefficient (e) is 4400 ( M cm) at y 447 nm, what is the concentration of [FeSCN] in the solution? Assume a 1 cm path length. (Show all work.) 4. A student mixes 5.00 mL of 0.0020 M Fe(NO.), with 3.00 mL of 0.0020 M KSCN Solution and 2.00 mL water at a...
Please help with pre-lab questions.
Pre-Lab Questions: 1. A sample of 2-butanol has a specific rotation of +3.25. Determine the optical purity (%ee) and percent composition of this sample (see Mohrig section 17.4). The specific rotation of pure (+)-2-butanol is +13.0°. 2. The equation for the formation of the diastereomeric salts is shown in the background information (performed in Part A of the procedure). Write this chemical equation in your notebook, then ALSO write a balanced equation for the formation...
Chemistry 2A Lab 13: Solution Calculations Introduction This lab involves sample calculations using various concentration units. This lab will work with the following types of concentration units: % mass, % volume, % mass/volume, and molarity. A solution is the sum total of the solute and solvent. % mass= mass solute mass solution -100 volumesolute .100 % volume- volume solution % mass/volume mass solute volumesolution -100 Molarity moles solute liters solution The dilution of a liquid requires the addition of more...
3. To make a buffer solution, you can start with a solution of a known number of moles of the base form (A) and add a strong acid until you have neutralized the correct number of moles of the base to have the correct A HA ratio for the buffer you require. For the example using HF in the background information: a. How many moles of the base form (A) are required to start? HINT: The acid form (HA) will...
Need help with these both please
Two aqueous soiutions are prepared in which one contains 0.275 moles of the nonvolatile so glucose (ClO dissolved in 2500.00 g of water and the other solution contains 0.275 moles of the nonvolatile solute CaCI, dissolved in 2500.00 g of water. Describe how each of the colligative properties listed below would be affected for each of these solutions (for each olatile solut 4. is a decrease or an increase then identify which of the...
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