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QUESTION 6 A particular sample in this experiment had a total mass of 3.08g. It was found through the procedure tha...
QUESTION 3 Following the titration procedure used in this experiment, 0.0966 g of the green oxalate...
QUESTION 3 Following the titration procedure used in this experiment, 0.0966 g of the green oxalate containing compound was titrated to the end point using 26.433 mL of 0.0100 M KMnO4 solution. Based on this result, what was the percent oxalate present in the sample? Report your answer to three significant figures
QUESTION 26 What volume of scandium, in milliliters, will have a mass of 31.2 grams? The...
QUESTION 26 What volume of scandium, in milliliters, will have a mass of 31.2 grams? The density of Scandium is 2.985 g/mL Report your answer in milliliters to three significant figures and do not include units. RE QUESTION 27 How many molecules of CH4 are in 39.2 grams of CH4? Report your number of molecules to two significant figures and do not include units NO QUESTION 28 6 + + Determine the theoretical yield of Fe2O3, in grams, if 20.4...
QUESTION 1: A particular brand of gasoline has a density of 0.737 g/mL at 25 ∘C....
QUESTION 1: A particular brand of gasoline has a density of 0.737 g/mL at 25 ∘C. How many grams of this gasoline would fill a 13.2 gal tank (1US gal=3.78L)? Express your answer to three significant figures and include the appropriate units. QUESTION 2: A block of metal has a width of 3.2 cm, a length of 17.1 cm, and height of 4.2 cm . Its mass is 1.2 kg . Calculate the density of the metal. Express your answer...
QUESTION 19 What is the mass percent of sodium, Na, in Na2O7 Report your answer to...
QUESTION 19 What is the mass percent of sodium, Na, in Na2O7 Report your answer to two significant figures and do not include units (the units would be %) Be sure to show your work on paper and submit it at the end of the exam so partial credit can be determined. NOTE: If you need to enter an answer in scientific notation, 6.02x1023 would be entered as 6.02E23 QUESTION 20 What is the mass in grams of a single...
Calculation required for Q. 2: Calculation of mass of CaCO3 sample for analysis.
calculation required for Q. 2: Calculation of mass of CaCO3
sample for analysis.
solid calcium carbhotae samples, calcium bicarbonate, CalHCO), i abo prscn. 1. In some calciunm for its reaction with hydrochloric acid. (og) 2 Experimental Procedure, Part A.2a. Complete the calculation required to appear on the Report Sheet (here and Report Sheet). 3. a. Experimental Procedure, Part A.3b. Explain how a water-filled graduated cylinder is inverted in a pan of water. b. Experimental Procedure, Part A.4. What is the...
****SHOW ALL THE STEPS*** Question 1 2 pts A soil sample with a mass of 851.0...
****SHOW ALL THE STEPS***
Question 1 2 pts A soil sample with a mass of 851.0 grams is retrieved from the field. After 24 hours in the oven, its mass is equal to 699.0 grams. Calculate the moisture content of the sample (in %) to at least four significant figures. Note: In your answer, only provide the magnitude and do not include any units. Next →
QUESTION 6 0.6657 g of potassium hydrogen phthalate require 24.11 ml of a particular sodium hydroxide...
QUESTION 6 0.6657 g of potassium hydrogen phthalate require 24.11 ml of a particular sodium hydroxide solution to reach the endpoint. What is the molarity of the sodium hydroxide solution? Give units of M with your answer but do not leave a space between your number and the M. QUESTION 7 Sodium is 39.3% of the mass of sodium chloride, table salt. How many grams of sodium are in 171.7 g of table salt. Do not include units and report...
レfoln Question #: 17 A solution prepared from 1o.o mL of chloroform (1.49 g/mL) in 5oo...
レfoln Question #: 17 A solution prepared from 1o.o mL of chloroform (1.49 g/mL) in 5oo mL.of hexane(0 65 g/mL) Report your answer to three number of significant figures. Do NOT include units in your answer. has a concentration of 1 %by mass/volume. Assume the volumes are additive. 1 Io.O
A solid sample of a complex salt, with ideal composition Ni(NH3)6(NO3)2, was analyzed for nickel by...
A solid sample of a complex salt, with ideal composition
Ni(NH3)6(NO3)2, was
analyzed for nickel by dissolution in slightly acidic solution and
precipitation as the dimethylglyoximate, Ni(DMG)2.
A sintered glass crucible of mass 13.2379 g was used to filter
off the precipitate. The dried crucible and precipitate had a
combined mass of 13.3319 g.
Calculate the theoretical mass of the original
Ni(NH3)6(NO3)2
sample.
0.0927 g
You are correct.
Your receipt no. is 152-9832
Previous Tries
Calculate the mass of nickel...
Question 10(5 points) A sample of gas with a molar mass of 8.0067g/mol grams is found...
Question 10(5 points) A sample of gas with a molar mass of 8.0067g/mol grams is found to occupy 3.20 L at 298.0K and 732.0 mm Hg. What is the density of the gas in g/L? Your Answer: Answer units Save Question 11 (5 points) B A certain electromagnetic wave has a wavelength of (3.25x10-7) nm. What is the frequency of the wave? Report your answer in scientific notation. Note: Your answer is assumed to be reduced to the highest power...
QUESTION 3 Following the titration procedure used in this experiment, 0.0966 g of the green oxalate containing compound was titrated to the end point using 26.433 mL of 0.0100 M KMnO4 solution. Based on this result, what was the percent oxalate present in the sample? Report your answer to three significant figures
QUESTION 26 What volume of scandium, in milliliters, will have a mass of 31.2 grams? The density of Scandium is 2.985 g/mL Report your answer in milliliters to three significant figures and do not include units. RE QUESTION 27 How many molecules of CH4 are in 39.2 grams of CH4? Report your number of molecules to two significant figures and do not include units NO QUESTION 28 6 + + Determine the theoretical yield of Fe2O3, in grams, if 20.4...
QUESTION 19 What is the mass percent of sodium, Na, in Na2O7 Report your answer to two significant figures and do not include units (the units would be %) Be sure to show your work on paper and submit it at the end of the exam so partial credit can be determined. NOTE: If you need to enter an answer in scientific notation, 6.02x1023 would be entered as 6.02E23 QUESTION 20 What is the mass in grams of a single...
calculation required for Q. 2: Calculation of mass of CaCO3
sample for analysis.
solid calcium carbhotae samples, calcium bicarbonate, CalHCO), i abo prscn. 1. In some calciunm for its reaction with hydrochloric acid. (og) 2 Experimental Procedure, Part A.2a. Complete the calculation required to appear on the Report Sheet (here and Report Sheet). 3. a. Experimental Procedure, Part A.3b. Explain how a water-filled graduated cylinder is inverted in a pan of water. b. Experimental Procedure, Part A.4. What is the...
****SHOW ALL THE STEPS***
Question 1 2 pts A soil sample with a mass of 851.0 grams is retrieved from the field. After 24 hours in the oven, its mass is equal to 699.0 grams. Calculate the moisture content of the sample (in %) to at least four significant figures. Note: In your answer, only provide the magnitude and do not include any units. Next →
QUESTION 6 0.6657 g of potassium hydrogen phthalate require 24.11 ml of a particular sodium hydroxide solution to reach the endpoint. What is the molarity of the sodium hydroxide solution? Give units of M with your answer but do not leave a space between your number and the M. QUESTION 7 Sodium is 39.3% of the mass of sodium chloride, table salt. How many grams of sodium are in 171.7 g of table salt. Do not include units and report...
レfoln Question #: 17 A solution prepared from 1o.o mL of chloroform (1.49 g/mL) in 5oo mL.of hexane(0 65 g/mL) Report your answer to three number of significant figures. Do NOT include units in your answer. has a concentration of 1 %by mass/volume. Assume the volumes are additive. 1 Io.O
Question 10(5 points) A sample of gas with a molar mass of 8.0067g/mol grams is found to occupy 3.20 L at 298.0K and 732.0 mm Hg. What is the density of the gas in g/L? Your Answer: Answer units Save Question 11 (5 points) B A certain electromagnetic wave has a wavelength of (3.25x10-7) nm. What is the frequency of the wave? Report your answer in scientific notation. Note: Your answer is assumed to be reduced to the highest power...
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