Standardization of a sodium hydroxide solution against potassium hydrogen phthalate (KHP) yielded the accompanying results Mass of KHP, g 0.7987 0.8365 0.8104 Volume of NaOH, mL 38.29 39.96 38.51 0.8039 38.29 Calculate the average molarity of the base
Q: Sodium hydroxide reacts with sulphuric acid to produce Sodium sulphate and water. To complete the…
A:
Q: Given Carbon Dioxide, CO2. a. The most electronegative element is so the center element should be b.…
A: The carbon dioxide molecule is formed by one C atom and 2 oxygen atoms. Molecular formula: CO2 Here…
Q: Sodium hydroxide solution was standardized against one gram of potassium phthalate. First trial used…
A: Since you have posted a question with multiple sub-parts, we will solve the first three subparts for…
Q: The price of (a) CoCl•6H2O is $25.00 per 100 g and (b) NH,CI was $11.35 per 500 g. Calculate the…
A:
Q: I Review I Constants I Periodic Table What mass of HCl can this buffer neutralize before the pH…
A: Given data :
Q: The first four steps in the radioactive decay sequence of Po-218 are a, B, a, B. To write the…
A: Given ; Po-218
Q: For ferricyanide determination by voltammetry, 20 mL of non-electroactive KCl solution is added to…
A: Molarity = No of moles / Volume (L) Also, No of moles = Molarity * Volume (L)
Q: How much heat evolves from burning 16.4 g of sulfur, Sg, in air? g S8(s) + 8 O2(g) → 8 SO2(g) AH°r=…
A:
Q: Balance the equation: H2O[aq] + Ca(NO3)2[s] + (NH4)2HPO4[s] + NH3[aq] -> Ca10(PO4)6(OH)2[s] +…
A: 2H2O + 10Ca(NO3)2 + 6(NH4)2HPO4 + 8NH3 → Ca10(PO4)6(OH)2 + 20NH4NO3
Q: do the Fuctions go through 7) (R)2-bromopentane reacts With CH3 OH at raom temperature 2)…
A:
Q: REAGENT AMOUNTS In this section, you must record the actual amounts and volumes of reagens use in…
A:
Q: Cobalt-60 is radioactive and has a half life of 5.26 years. How long would it take a sample to decay…
A: We have to calculate the time taken.
Q: How many moles are in 6.90 g of SO,? Express your answer to three significant figures. VO AE moles…
A: Given, mass of SO3 = 6.90 g moles are in 6.90 g of SO3 = ? Note: molar mass of SO3 = (32 + 3×16)…
Q: When solid Mg metal is put into an aqueous solution of Cu SO, , solid Cu metal and a solution of Mg…
A: Write net ionic reaction of the given---
Q: The standardized basic solution was then used in getting the total acidity of a food sample. Ten…
A: Given: 1 g of KHP is reacting. Volume of NaOH solution used in trial 1 = 52.0 mL = 0.052 L…
Q: Na2CO3 (aq) + CaCI2 (aq)
A: Na2CO3 (aq) + CaCI2 (aq)
Q: The preparation of an aqueous solution is described in the table below. For this solution, write the…
A: Given: 0.16 mol HI is added to 1 L solution of 1.1M HF and 1.1 M KF.
Q: Po undergoes four decay reactions: B, a, B, a. Step 1. 218 218 Po undergoes B decay to give 35° At…
A: Beta decay - When a radioactive nucleus disintegrates by emitting a β-particle, the atomic number…
Q: 23. Ba- 137.2, Ca = 40, S-32, Cl-35.5, Br-80, Sr-88, 1-1 Na 1. Explain the following: a). Strength…
A: Since you have asked multiple question, we will solve the first question for you. If youwant any…
Q: 8. Is the following statement True or False: A dry cell has no water in it.
A: A standard dry cell battery consists of a zinc anode , a carbon cathode within a central rod
Q: Draw or look up the molecule to determine the classification from the structure Alcohol…
A: Solubility of alcohol in water is because oh hydrogen bond interaction. Solubility of alcohols in…
Q: (2) Adenine has a molar absorbance of 4 13.1 M-1cm-1 for 263 nm nucleic acid. What is the molar…
A: Absorbance = log (Ii/It) Ii = Intensity of incident light It = Intensity of transmitted light Also,…
Q: Carbon-14 has a half-life of 5730 years. In a plant fossil, you find that the 14C has decayed to…
A: The redioactive decay always follows first order reaction kinetics.
Q: N-C) CI
A:
Q: set of possible sets of quantum numbers for the electrons in the nitrogen atom.
A: Answer : electronic configuration of nitrogen 1S2 2S22P3 +1 0 -1
Q: Standardization of a sodium hydroxide solution against potassium hydrogen phthalate yielded the…
A: First we would write a reaction between KHP and NaOH. Then Calculate moles of KHP from given mass…
Q: 2. Thirty-two joules of heat is added to a 255 gram iron bar How much will the iron bar's…
A:
Q: Normal saline, a 0.90 %(w/v) solution of salt (NaCl)in water, is often used as an IV carrier fluid…
A: Given- Normal saline (w/v)=0.90% Weight of NaCl =570 mg=0.570g Volume=?
Q: Determine the number of atoms of C in 15.0 grams of C₆H₁₂O₆.
A: Given, mass of C₆H₁₂O₆ = 15.0 g Number of atoms of C in 15.0 grams of C₆H₁₂O₆ = ? Note: molar mass…
Q: What amino acid residues interact with methylphenidate in DAT and NET protein active sites? please…
A: The three human monoamine transporters (MATs) i.e. the dopamine transporter (DAT), the serotonin…
Q: Table 2 Molecules with Multiple Bonds Molecule CH2O HCN CO2 CO [NO2]- Number of Bond Pairs…
A: Number of bond pairs is half the number of electrons bonded to each other around the central atom.…
Q: Reler to the phase diagram below when answenng the questions on this worksheet. Begin by adding S,…
A: A substance can exist in 3 different phases- solid,liquid,gas.Phase diagram describes effect of…
Q: A buffer with a pH of 4.65 contains 0.39 M of sodium benzoate and 0.14 M of benzoic acid. What is…
A: Given, pH of buffer = 4.65 [C6H5COONa] = 0.39 M [C6H5COOH] = 0.14 M Volume of buffer = 1.4 L…
Q: 4. Suppose 5 mL of 1.5 M ethylene diamine is added to 50 mL of 0.15 M Ni solution in an identical…
A: Given: Concentration of ethylene diamine i.e. en = 1.5 M Volume of en solution taken = 5 mL = 0.005…
Q: . Mixing a solution of higher concentration with an identical solution of lesser concentration 2.…
A: We are authorised to solve only one question at a time. Please post rest of the questions…
Q: Find the volume in liters of a 1.4 M solution that contains 7.85 grams of ammonia, NH3
A:
Q: 10. Consider the reaction: Ag+ (aq) + Cl- (aq) AgCI (s) Given the following table of thermodynamic…
A: Given ; reaction
Q: solution with [H+]= 1 x 10-3 M has pH . Is this solution an acid, base, or neutral? A…
A: Given-> [H+] = 1× 10-3 pH =-log[H+] = -log(1× 10-3) = -log10-3 = 3log 10 = 3 pH =3<7 =>…
Q: Markovnikov Addition requires carbocation formation. T or F Markovnikov addition refers to both…
A: Hydroboration follows anti markovnikov addition while Oxo mercuration Demercuration follow…
Q: = -255 kJ/mol and AS°rxn 211 J/mol at 55°C. Do you expect the °rxn to confirm your prediction. 2. A…
A: Spontaneous reaction :- A reaction which takes place on its own without the need of any external…
Q: A generic salt, AB, has a molar mass of 215 g/mol and a solubility of 1.30 g/L at 25 °C. AB(s) =…
A:
Q: The rate of a reaction depends on: O Whether or not a catalyst is used O The nature of the reactants…
A: The rate of reaction is the speed at which a chemical reaction takes place.
Q: Basic KMNO4, heat Br Which type of carbonyl compounds are formed? Select all that apply. Amide Ester…
A: ->Basic KMnO4,heat is acted as oxidizing agent
Q: The molecule carbon tetrachloride (CCl4) has three Raman-active absorptions that occur at 218, 314…
A:
Q: 8. a) Starting from the rate law for the second order reaction below, derive the relationship…
A:
Q: What is the maximum molarity of PO43- in a solution that contains 0.20 M Co2+? For Co3(PO4)2 Ksp…
A: Given : Molarity of Co2+ = 0.20 M Co3(PO4)2 Ksp = 2.5 x 10-5
Q: What would 0.03 bq of Cs be equivalent to? What i mean by this is, how much is that when compared to…
A: Given :0.03 bq of Cs We have to determine: What would 0.03 bq of Cs be equivalent to i) in terms…
Q: Identify which of the following are carbohydrates. Check all that apply. • View Available Hint(s) OH…
A: We have to predict the carbohydrates among given choices .
Q: Draw the missing organic structures or select the missing reagents in the following multistep…
A:
Q: A sample of Al2(SO4); weighing 7.52-g was dissolved in enough water and diluted to 250.0-mL.…
A: Given: Mass of sample = 7.52 g. The sample is diluted to 250 mL. Volume of diluted sample used =…
kindly help me with this problem thank you !
Trending now
This is a popular solution!
Step by step
Solved in 6 steps
- The following replicate molarities were obtained when standardizing a solution: 0.1067, 0.1071, 0.1066, and 0.1050 M. Assuming no determinate/systematic errors, within what range are you 95% certain that the true mean value of the molarity falls?Prepare 0.1N H2SO4 solution of 250ml volume. (Density of H2SO4 is 1.84 and purity is 98 %)3. The following molarities were calculated from replicate standardizations of a NaOH solution: 0.502 8, 0.502 9, 0.502 3, 0.503 1, 0.502 6, 0.502 7, 0.503 4, and 0.502 5. Assuming no systematic errors, within what range are you 90% certain that the true mean value of the molarity falls?
- The following replicate molarities were obtained when standardizing a solution: 0.1067, 0.1071, 0.1066, and 0.1050 M. Assuming no determinate/systematic errors, within what range are you 95% certain that the true mean value of the molarity falls? (Use t-table)Submit a clean, dry, and properly labeled 50-mL reagent bottle for your unknown solution. Pipet 20.00 mL of the sample in 250-mL Erlenmeyer flask. Add 5 mL of buffer and 5 drops of indicator. Titrate the solution until it turns light blue. If the titration consumes more than 50 mL of the titrant, dilute the sample accordingly. Compute for ppm of CaCO3 using the following table. Mean Molarity = 2.487 x 10^-3 MBlank correction = 0.015 Formula = V (mL) titrant x Mean Molarity of Titrant x Molecular weight of CaCO3 x 1/V (L) sampleCalculate volume of H2 at 0 degress C, 2.00atm, from 275mL of 0.725M HCl and 4.50g Mg. Mg + 2HCl =MgCl2 + H2
- Prepare 250 mL stock acetic acid solutions and from this solution prepare 100 mL of eachstandard solutions (you have pippette with sensitivity of 0.1 mL). (0.015 M 0.030 M 0.060 M 0.090M 0.12 M 0.15 M)An analysis of city drinking water for total hardness was done by two students in the laboratory and produced the following results (in ppm CaCO3): Student A: 228.3, 226.4, 226.9, 227.1, and 228.6. Student B: 229.5, 226.1, 230.7, 223.8, and 227.5 what is the coefficient variation?If one mixes 50cm³ of EtOH and 50cm³ of H2O at room temperature; will the total volume of the solution be 100.0 cm³? Justify answer with appropriate calculations and explanations
- Calculate the gravimetric factor of: FeO in Fe2O3 Bi2S3 in BaSO4 BaSO4 in (NH4)2SO4 Mn2O3 in Mn3O4 NOTE: Present complete solution and include the detailed computation of the molecular weight. Express your final answers up to FOUR decimal places.Calculate the mole fraction of CaF2 in an aqueous solution prepared by dissolving 0.400 moles of CaF2 in 850.0 g of water.Group of answer choices 0.0167 0.0252 0.00841 0.0540 0.00900With using sig figs I came up with the answer of 530mL but I do not feel confident with that answer.