B. Same as Part A, but three determinations are made: Sample 1 Sample 2 Sample 3 mass of sample 0.4892 g 0.3981 g 0.3429 g mass of barium sulfate 0.8462 g 0.6890 g 0.5938 g Find the mass percent SO42- for each sample, the average percent SO42- (mean), and the average deviation from the mean (precision index).
Q: I have an equation and the answer, however im not sure how to do the calculation. Please show how…
A:
Q: Richards and Willard determined the atomic mass of lithium and collected the following data: Expt 1…
A: Mean value is obtained by deviding sum of all values by number of experiments. Median value is the…
Q: Molarity of NaOH (phenophthalein) 0.1132 Volume of HC2H3O2 (acetic acid) 25.00 ml. vinegar %3D TRIAL…
A: Given data,Molarity of NaOH=0.1132MVolume of acetic acid=25.0mL=0.025L
Q: Metal Sample Large 32.30 Triple-beam Balance Small Mass Beaker (g) Mass of Metal + Beaker (g) 110.74…
A: The ratio of mass of the solution to the volume of the solution is known as denisty.
Q: Trial Sample Mass Trial 1 Trial 2 (partner) (partner) #1374 o.1478018 0-lal NaOH Buret Readings…
A:
Q: gma Sand Sigma Shale Sigma Hydrocarbon Shale volume, Vsh Porosity 6 cu 30 cu 20 cu 10% 25 pu…
A:
Q: For questions #27- # 30 NaOH + Al(NO3)3 27. What is the molar mass of aluminum hydroxide? A.)…
A:
Q: A mass of KHP is measured at 0.3051g and contains ______ moles. Group of answer choices
A: KHP means potassium hydrogen phthalate. The molecular formula of KHP is C8H5KO4.
Q: To determine the mass of Fe2O3 from the given mass of K3Fe(CN)6, the gravimetric factor to be used…
A: Gravimetric factor: A factor that converts grams of a compound into grams of a single element is…
Q: In one experiment, 0.0995M HCl was used to analyze soda ash and the following data were obtained:…
A: A chemical reaction is symbolic representation of the conversion of substances to new substances. In…
Q: For the calculation of sd, shouldn't it be (0.97-1.09) and so on... because 0.97 = x and 1.09 =…
A: The general equation to find the standard deviation is: ∑i=2n(Xi-μ)2NwhereXi = Experimental valuesμ…
Q: Determine the amount of potassium chloride in each solution. 21.7 g of a solution containing 1.04%…
A: Mass percent of the solution is equal to the ratio of mass of solute and mass of solution multiplied…
Q: 1. Using your data from Part I of the experiment, determine the (Sr) in the sample of strontium…
A: Part 1 Mass of unknown used = 2.5 g Mass of dry filter paper + SrCO3 = 2.62 g Mass of empty filter…
Q: one Trial two KIO3 solution taken (mL) 1.70 16.5 Moles of KIO3 1.06 x 10^-3 1.06 x 10^-3…
A: We have find out solubility and solubility product of Ca(Io3)2 for first and second filtrate.
Q: What is the average ratio in this chart?
A: Epsom salt is a hydrated salt of magnesium sulfate. It is used for relieving muscle pain and is used…
Q: Table 1: Estimation of Dissolved Oxygen: SI No Volume of water Initial sample (ml) burette Final…
A: Dissolved Oxygen is defined as the amount of gaseous Oxygen that is dissolved in the water .…
Q: Mass of Erlenmeyer Flask (g) 24.33 24.37 24.44 Mass of Erlenmeyer Flask + Calcium Hydroxide…
A: The comment should be: We’ll answer the first question since the exact one wasn’t specified. Please…
Q: The data in the problem has error. Make it 0.99 M KMnO4. Show the complete solution
A:
Q: Allison dissolves as much as possible of a certain solid in a quantity of water at room temperature;…
A: Solubility is the mass of the solute dissolved in particular amount of solution .
Q: Total Volume HCl used 80ml Volume NaOH used 70ml Class average HCL b.1045
A: Given: Volume of NaOH used (V1) = 70 ml Volume of HCl used (V2) = 80 ml Concentration of HCl…
Q: M: Table 1: Standardization Data Trial 1 Trial 2 Mass of KHP O145504 0.05ML 04536 12.3 mL Initial…
A: To calculate the Molarity of base, we would first check the mole ratio between base and KHP from the…
Q: How many moles are there in 7.14 × 10³⁵ molecules of O2 Use the format for solution • Given •…
A:
Q: How can you prepare 500 ml of 0.1M HCI, if the percentage is 35%, and density = 1.18g/ml,…
A: Mass percentage or percentage by weight is one of the concentration terms that indicates the mass of…
Q: 16. Concentrated glacial acetic acid is 99.7% H3CCO2H by mass and has a density of 1.05 g/mL. What…
A: Given, Concentrated glacial acetic acid is 99.7% H3CCO2H by mass i.e. 99.7 g acetic acid in 100 g…
Q: Calculate the number of moles for salicylic acid and acetic anhydride using the data provided below.…
A: Given mass of salicylic acid = 2.0 gram Molar mass of salicylic acid = 138.12 g/mol Volume of acetic…
Q: A pipet delivers 10.9 mLmL , 10.1 mLmL , and 10.9 mLmL in consecutive trials. Find the mean volume…
A:
Q: Table 2. Water loss in Potassium Ferrioxalate Trial 1 Trial 2 Mass of Vial (g) 14.689 11.181 Mass of…
A:
Q: Below is a picture of a 10-fold dilution series. What is the dilution factor of tube #3? Write as…
A: The dilution factor is referred as the final volume divided by the initial volume of the given…
Q: 50.0 ml of air were found to weigh 0.058 grams. The ratio of mass, volume of the air (in grams per…
A: Given: Volume of air = 50.0 mL Mass of air = 0.058 g
Q: 4. Assuming no calculation errors, why would a percent recovery > 100% or a percent recovery < 100%…
A: When product is recovered as predicted then % of recovery < 100 %
Q: Using the conversions above calculate : 1.How much N and K are in a 25 kg bag of 12-22-18? 2. How…
A: Fertiliser label indicates the percentage by weight of N, P as P2O5 and K as K2O. Fertiliser label…
Q: Chips # of extractions Chips' weight (g) Fat weight (g) Regular 3 20.043 6.745 3 20.187 6.438 3…
A: For the 1st trial of regular chips, the percentage of fat, m% by mass, in a 20.043 g of chips is…
Q: What is the absolute uncertainty and relative uncertainty of the molarity of the solution? M =…
A:
Q: Lauryl alcohol is obtained from coconut oil and is used to make detergents. A solution of 5.00 g of…
A: Given that : Mass of lauryl alcohol = 5.00 g Mass of benzene = 0.100 kg Freezing point of benzene =…
Q: A student must prepare 7.00 L of 0.100 M Na2CO3 (106 g/mol). Which is the best procedure for…
A: Given that: 7 L of 0.1 M Na2CO3. Now, 7 L of 0.1 M Na2CO3 = 7 L x 0.1 mol/L…
Q: Sample 1 Sample 2 Sample 3 Mass of Erlenmeyer Flask (g) 24.33 24.37 24.44 Mass of Erlenmeyer…
A: Ca(OH)2 ----> Ca2+ + 2 -OH 2 -OH + 2 HCl -----> 2H2O + 2Cl- net reaction Ca(OH)2 + 2 HCl…
Q: Determine the number of grams (to 3 decimal places) of solid KNO3 to make 1.0litres of 1000 ppm of…
A: Parts per million (ppm) is a concentration term like percent concentraton. The mass of solute in mg…
Q: Brand of vinegar or unknown no. Colauita White Wine Trial 1 112 2803 Trial 2 Trial 1 Trial 2…
A: Given: mass of vinegar, moles of NaOH are in above table. molar mass of CH3COOH = 60.052 g/mol
Q: A sample consisting entirely of pure Li2CO3 and pure BaCO3 weighs 1.000 g and requires 30.00 mL of…
A: Answer: This question is based on stoichiometric calculation where we have to change the number of…
Q: 1: What is the density (g/ml) of a 3.6M Sulfuric acid solution that is 29% H2S04 mass (Mwt. = 98)?…
A:
Q: MXMX (KspKspK_1 = 5.69×10−11) Express your answer in moles per liter.
A:
Q: 1. Which of the following is not a step in preparing a water sample container? a. All sample…
A: Option a is the correct answer. Steps in preparing a water sample container: Decide on the number of…
Q: 0 30 5060 70 3600 UALA Weight percent tungsten 90 80 100 3422°C 3400 - 3200 3000 2800 2665 C 2670 C…
A: Few questions based on phase diagram that are to be accomplished.
Q: Complete the table and provide the percent (%) recovery for each extraction
A: A question based on general chemistry that is to be accomplished.
Q: Data Table 1. Mass of Pipetted Samples of Water (The first one is done for you. Sample Density…
A:
Q: The density of a series of solutions with different concentrations of NaCl is measured. The results…
A: Plot of density (g/mL) Vs concentration (NaCl % by weight) is given by,
Q: image
A: From Charles law: Here, T is the temperature in kelvin.
Q: 2 NOCI(g) → 2 NO(g) +C12(g) AH° =+75.56 kJ 2 NO(g) + 02(g) → 2 NO2(g) AH° =-113.05 kJ 2 NO2(g) →…
A:
Answer B, show all work and correct number of sig figs.
Trending now
This is a popular solution!
Step by step
Solved in 6 steps
- 30. What weight of impure ferrous ammonium sulfate sample in milligrams must be taken for analysis so that the number of centigrams of BaSO4 will represent five times the % S in the sample? a. 230 mg b. 345 mg c. 460 mg d. 690 mg 31. If 100 mL of a dichromate solution (10 grams K2Cr2O7 per liter), 5 mL of 6 N H₂SO₁ and 75 mL of a ferrous solution (80 grams of FeSO4-7 H₂O per liter) are mixed, and resulting solution titrated with 0.2121 N KMnO4, what volume of is required KMnO4? a. 5.60 mL b. 5.80 mL c. 6.00 mL d. 6.20 mL1. On the molecular level, what does it mean for a solid sample to be pure? 2. The computed percent recovery was more than 100%. What does this signify, and what should be done about it?O d. 83.0 mL e. 139 mL Diluting 1.0 mL of a 1.0 M solution to 1,000 mL results in a solution that is 0.001 M. Repeating this 1,000-fold dilution process five more times results in a concentration of Select one: O a. 1.0 x 108 M. O b. 1.0 x 10-9 M. O c. 1.0 x 10-18 M. Od. 2.0 x 10-4 M. O e. 5.0 x 103 M. Clear my choice In a demonstration of strong electrolytes, weak electrolytes, and nonelectrolytes, Professor Popsnorkle used a lightbulb apparatus that showed how much a solution conducted electricity by the brightness of the lightbulb. When pure water was tested, the bulb did not light. Then Professor Popsnorkle tested Type here to search
- What is the H2S content of the solution (in mg/dm3 unit) of which 20 cm3 reacts with 40 mgof Br2.MM[H2S]=34.08 g/mol; MM[Br2]=159.8 g/molPart C: Determine percent Oxalic Acid in Unknown Sample Molar mass of oxalic acid 90.03 g/mol Trial 1 Trial 2 Trial 3 Average Precision Mass of unknown oxalic acid (g) 1.0048 0.9995 1.0018 --- Volume (mL) of Standardized KMNO4 used Moles of KMnO4 10.03 9.85 10.45 --- --- --- Moles of oxalic acid (H2C204 • 2H2O) --- --- grams of oxalic acid (H2C204 • 2H2O) (g) percent oxalic acid (%) --- --- Show calculations:* 00 LL CO %23 6. What volume of 0.08892 M HNO3IS required to react completely with 0.2352 g of potassium hydrogen phosphate? HNO3(aq) + K2HPO4(ag)-H3PO4(aq) + KNO3(ag) L Display Settings F4 F5 F7 F8 F10 F11 F12 2$ 4. 5. 9. E R T Y
- SOLUBILITY CURVES KI 140 130 120 110 100 NONO 90 KNO HCI NH3 70 NH CI 60 KCI 50 40 NaCi- 30 KCIO3 20 O 1O 20 30 40 50 do 7O 80 9o 100 TEMPERATURE C 1. What mass of solute will dissolve in 100 g of water at the following temperatures? a. KNO3 at 70°C b. NaCl at 100°C c. NH&Cl at 90°C d. Which of these 3 substances is most soluble in water at 15°C? %3D GRAMS OF SOLUTE/IO0g MO4. Assuming no calculation errors, why would a percent recovery > 100% or a percent recovery < 100% be obtained? Give at least one reason for eachH+ HO HC1 (Excess) OH 1. LiAlH 4 2. H₂O* H₂ Pd/C 1. CH 3MgBr 2. H₂O+
- 5) If all the NaHCO3 in bag 2 reacted, calculate the number of moles of gas produced? tates) E FocusAtomic Wt: 0 15.999 126.904 C 12.011 = As = 74.922 H = 1.008 Preparation and Standardization of 0.1 N lodine Solution Preparation 1. Dissolve 14 g of iodine in a solution of 36 g of potassium iodide in 100 ml of water 2. Add 3 drops of hydrochloric acid and dilute to 1000 mil Standardization Arsenic Trioxide Volume of iodine Normality 1. Weigh 150 mg of arsenic trioxide (As203) and dissolve in 20 ml of 1 N sodium hydroxide by warming if necessary 2. Dilute with 40 ml of water, add 2 drops of methyl orange TS and follow with diluted hydrochloric acid until the yellow color Na = 22.9901 = is changed to pink Add 2 grams of sodium bicarbonate, dilute with 50 ml off water, and add 3 ml of starch TS 4. Slowly titrate the iodine solution into the analyte until a permanent blue color is produced. 5. Calculate the normality. *Volume of iodine which produced the permanent blue color: 30.2 ml Standardization: REACTION As2O3 + 6NaOH → 2Na3AsO3 + 3H₂O Na3ASO3 + 12 + NaHCO3 → Na3AsO4 + Nal + CO₂ +…Aktiv Chemistry < + C X b Success Confirmation XM Your Chemistry answe x app.101edu.co Answered: A 0.660 M X b Answered: How many × b Answered: A student X Time's Up! What quantity in moles of NaOH are there in 82.0 mL of 0.300 M NaOH? 1 4 7 +/- 2 5 8 New Tab mol 3 6 9 G 0 x + Submit X C x 100