Homework Answers
Since 1 dL is equal to 100 mL, so 5 mL is equal to 0.05 dL. The weight of sample is calculated by given data. And then the formula for density is used:
Density = Mass/Volume.
The correct option is 87.7 g/dL.
The detailed solution is given below:
Add Answer to:
QUESTIONS To determine the density of a solvent, a student pipets a 5.00 mL sample into...
To determine the density of a solvent, a student pipets a 5.00 ml sample into an...
To determine the density of a solvent, a student pipets a 5.00 ml sample into an empty flask weighing 15.246 8. She weighs the flask with the sample and finds the mass to be 19.629 g. What is the density of the solvent in g/dL? 393 305 3.93 0.877 87.7
A student pipets 5.00 mL of a 5.103 M aqueous NaOH solution into a 250.00 mL...
A student pipets 5.00 mL of a 5.103 M aqueous NaOH solution into a 250.00 mL volumetric flask and dilutes up to the mark with distilled water. What is the final molarity of the dilute solution? Select one: A. 0.1 MX B. 0.10206 M C. 0.102 M D. 0.1021 M Your answer is incorrect. 86.14 mL of an acid solution was needed to neutralize 30.24 mL of a base solution of unknown concentrations. A second trial is run but this...
A student obtains 500.0 mL of a solution containing an unknown concentration of calcium iodide, CaI...
A student obtains 500.0 mL of a solution containing an unknown concentration of calcium iodide, CaI 2. She pipets 25 mL of this solution into a 100 mL volumetric flask and dilutes to the mark. She then pipets 10 mL of this diluted solution into a 50 mL volumetric flask and dilutes to the mark. She analyzes some of the solution from the final volumetric flask and finds that the iodide ion concentration is 0.0000064 M. Determine the molar concentration...
2. In attempting to calculate the density of chloroform, CHCl3, Riley determines the following densities: 1.30...
2. In attempting to calculate the density of chloroform, CHCl3, Riley determines the following densities: 1.30 g/mL, 1.35 g/mL, 1.32 g/mL, 1.23 g/mL, 1.13 g/mL, and 1.39 g/mL. a. Calculate the average density of chloroform from his data. b. If the accepted density of chloroform is 1.48 g/mL, calculate the percent error. C. Was Riley's data accurate? Was the data precise? Explain your reasoning. Experiment 1: Determination of the Density of Water and nft page 14 3. For each of...
at 15.0°C 20.0°C, 22.0°C, 25.0°C, Post-Laboratory Questions 1. Write down the values for the density of...
at 15.0°C 20.0°C, 22.0°C, 25.0°C, Post-Laboratory Questions 1. Write down the values for the density of water at 15.0°C, 20. and 28.0°C. a. Compare the values of the density of water at the above temp temperature affect density? If so, state how. Explain your rease Fat the above temperatures. Does b. Would temperature be a significant source of error for this experiment? Explain your reasoning. 2. In attempting to calculate the density of chloroform, CHCl3, Riley determines the following densities:...
you weigh out 7.25 grams of NaCl and dissolve this sample in 50 mL of deionized...
you weigh out 7.25 grams of NaCl and dissolve this sample in 50 mL of deionized water, and then you put it in an empty volumetric flask weighing 57.221 g. After the whole thing has dissolved, you add water all the way up to the 100.0 mL mark of the volumetric flask (flask and solution together weighs 162.9145 g.) what’s the mass % of NaCl in this solution?
Having obtained the volume of a flask (25.001 mL), the student then emptied the flask and...
Having obtained the volume of a flask (25.001 mL), the student then emptied the flask and dried it. The mass of the empty stoppered flask was 25.710 g. To the empty flask they added pieces of a metal until the flask was about three-fourths full. The student weighed the stoppered flask and its metal contents and found that the mass was 162.071 g. They then filled the flask with water, stoppered it, and obtained a total mass of 167.932 g...
A student dissolves 14.g of benzoic acid C7H6O2 in 425.mL of a solvent with a density...
A student dissolves 14.g of benzoic acid C7H6O2 in 425.mL of a solvent with a density of 0.92 g/mL. The student notices that the volume of the solvent does not change when the benzoic acid dissolves in it. Calculate the molarity and molality of the student's solution. Round both of your answers to 2 significant digits.
An empty graduated cylinder weighs 56.90 g. A student puts 24.6 mL of an unknown liquid...
An empty graduated cylinder weighs 56.90 g. A student puts 24.6 mL of an unknown liquid into the cylinder and the mass of the cylinder plus the liquid equals 98.47 g. What is the density of the unknown liquid (in g/mL)?
Name Section/CRN POST LABORATORY QUESTIONS 1. A student weighs out 3.52 g. of salicylic acid in...
Name Section/CRN POST LABORATORY QUESTIONS 1. A student weighs out 3.52 g. of salicylic acid in a 100 ml flask and adds 2.3 mL of acetic anhydride (density 1.080 g/mL). Determine the maximum (theoretical) number of grams of acetylsalicylic acid she can prepare. 2. If the student obtained 4.21 g, of aspirin, calculate the % yield. Briefly, explain why she might have obtained this amount of product. 3. The solubility of Aspirin (acetylsalicylic acid) at 25 °C is 3.0 mg/mL...
To determine the density of a solvent, a student pipets a 5.00 ml sample into an empty flask weighing 15.246 8. She weighs the flask with the sample and finds the mass to be 19.629 g. What is the density of the solvent in g/dL? 393 305 3.93 0.877 87.7
A student pipets 5.00 mL of a 5.103 M aqueous NaOH solution into a 250.00 mL volumetric flask and dilutes up to the mark with distilled water. What is the final molarity of the dilute solution? Select one: A. 0.1 MX B. 0.10206 M C. 0.102 M D. 0.1021 M Your answer is incorrect. 86.14 mL of an acid solution was needed to neutralize 30.24 mL of a base solution of unknown concentrations. A second trial is run but this...
2. In attempting to calculate the density of chloroform, CHCl3, Riley determines the following densities: 1.30 g/mL, 1.35 g/mL, 1.32 g/mL, 1.23 g/mL, 1.13 g/mL, and 1.39 g/mL. a. Calculate the average density of chloroform from his data. b. If the accepted density of chloroform is 1.48 g/mL, calculate the percent error. C. Was Riley's data accurate? Was the data precise? Explain your reasoning. Experiment 1: Determination of the Density of Water and nft page 14 3. For each of...
at 15.0°C 20.0°C, 22.0°C, 25.0°C, Post-Laboratory Questions 1. Write down the values for the density of water at 15.0°C, 20. and 28.0°C. a. Compare the values of the density of water at the above temp temperature affect density? If so, state how. Explain your rease Fat the above temperatures. Does b. Would temperature be a significant source of error for this experiment? Explain your reasoning. 2. In attempting to calculate the density of chloroform, CHCl3, Riley determines the following densities:...
Having obtained the volume of a flask (25.001 mL), the student then emptied the flask and dried it. The mass of the empty stoppered flask was 25.710 g. To the empty flask they added pieces of a metal until the flask was about three-fourths full. The student weighed the stoppered flask and its metal contents and found that the mass was 162.071 g. They then filled the flask with water, stoppered it, and obtained a total mass of 167.932 g...
Name Section/CRN POST LABORATORY QUESTIONS 1. A student weighs out 3.52 g. of salicylic acid in a 100 ml flask and adds 2.3 mL of acetic anhydride (density 1.080 g/mL). Determine the maximum (theoretical) number of grams of acetylsalicylic acid she can prepare. 2. If the student obtained 4.21 g, of aspirin, calculate the % yield. Briefly, explain why she might have obtained this amount of product. 3. The solubility of Aspirin (acetylsalicylic acid) at 25 °C is 3.0 mg/mL...
Most questions answered within 3 hours.
-
If
P(A)=.62, P(B)=.47, & P(A or B)=.88. What is the likeliness of
selecting only A?
A)...
asked 2 minutes from now -
What is the FUTURE VALUE of $500 invested for 3 years at 7% with
ANNUAL Compounding...
asked 7 minutes ago -
Modify the method so that instead of manually making teams, it
reads it from a text...
asked 5 minutes ago -
1. Which of the following is not a principle to apply to
construction:
Select one:
a....
asked 7 minutes ago -
In what way is a Christian’s position made more challenging by
revealing faith in the workplace?...
asked 14 minutes ago -
1) There are four categories of customer benefits in B2B
(business-to-business) markets. Which of the following...
asked 11 minutes ago -
What is the pH of a 150.0 mL solution of 0.0273 M NaOH (strong
base)?
asked 21 minutes ago -
A thin ball shell is shaped like a hollow ball with a radius of
26.6 cm....
asked 26 minutes ago -
What mass of KX (Mm= 180 g/mol) is required to prepare 483 mL of
a pH...
asked 26 minutes ago -
In a lottery game, 4 numbers from 1 to 29 are selected. Winners
must match all...
asked 37 minutes ago -
A catfish is 2.5 m below the surface of a smooth lake.
(a) What is the...
asked 39 minutes ago -
A reading specialist wants to identify third-graders who scored
at the lowest 10% on a standardized...
asked 45 minutes ago