Before investigating the scene, the technician must dilute the luminol solution to a concentration of 4.00x10-2 M. The diluted solution is then placed in a spray bottle for application on the desired surfaces. How many moles of luminol are present in 2.00 L of the diluted spray?
Q: Part A Find the H3O* concentration of a 0.280 M hypochlorous acid solution (whose acid dissociation…
A:
Q: An oxidizing agent will Select one: a. lose electrons b. increase in oxidation number c. increase…
A: Oxidizing agents are those compounds that oxidize other compounds present in solution and itself…
Q: In theory, there are only three inequivalent hydrogens in this molecule that could be substituted by…
A:
Q: A voltaic cell consists of an Mn/Mn2+ half-cell and a Cd/Cd2+ half-cell. Calculate [Mn2+] when…
A:
Q: Draw the protonic equilibria of the amino acid glutamic and calculate the IpH of the amino acid.
A:
Q: For each chemical reaction isted in the first column of the table below, predict the sign (positive…
A:
Q: Find the % composition of the following substances: (Show your solutions) Fe = 55.85 g/mol, C=12.01…
A: Given that - Compounds - Ferrous Ferrocyanide - Fe2C6N6 , Ferric oxide - Fe2O3 , Ferrous ammonium…
Q: Calculate the elecytomotive force (in volts) registered by an electrode immersed in a solution…
A: Given that
Q: Several emergent properties of water contribute to the suitability of the environment for life. How…
A: The correct statements are : 2) The partial positive region of water molecules are attracted to…
Q: Nitrogen monoxide, a gas recently found to be involved in a wide range of biological processes,…
A:
Q: A solution with a known concentration equal to 3.4 mM gave an absorbance reading of 0.820 in a…
A: Solution - Absorbance (A), also known as optical density (OD), is the quantity of light absorbed by…
Q: Describe a "mole" used in chemistry. First, define it, then give examples, then why it's so…
A:
Q: Reduction is the ___________ of electrons. Select one: a. loss b. share c. transfer d. gain
A: ->Reduction in process in which the oxidation state of substance decreases. ->This decrease in…
Q: 6.) A manometer has one side attached to an apparatus containing a gas sample and the other side…
A: “Since you have asked multiple question, we will solve the first question (Question 6 in this case)…
Q: Nitrogen monoxide, a gas recently found to be involved in a wide range of biological processes,…
A: 1) Given, 2NO(g) + O2(g) ➝ 2NO2(g) ∆rH° = -114.1 kJ/mol.rxn a) Is this reaction endothermic or…
Q: Treating C with HNO3 in the presence of H2SO4 will give what compound(s)? There are multiple…
A: Given compounds: We have to find the products when compound C is treated with HNO3 in the presence…
Q: Draw the chemical structure of the following amino acid sequence at pH 7, label the peptide bonds,…
A:
Q: What is the standard enthalpy (in KJ) of formation for this reaction. so,(9) + O2(g) → SO;(g) Hint:…
A: SO2(g) + O2(g) --> SO3(g)
Q: y grams of O,
A:
Q: A chemist wishing to do an experiment requiring Ca (half-life = 4.5 days) needs 4.0 µg of the…
A: A chemist wishing to do an experiment requiring 47Ca2+ (half-life = 4.5 days) needs 4.0 µg of the…
Q: QUESTION 8 How many mL of 3.0 M sulfuric acid will contain 0.024 moles of the acid? Explain your…
A: Given, Molarity of sulfuric acid solution = 3.0 M = 3.0 mol/L Moles of sulfuric acid = 0.024 mol…
Q: Calculate the pH of a solution in which one normal adult dose of aspirin (670 mg ) is dissolved in…
A: Molar mass of aspirin = 180.158 g/mole
Q: For each chemical reaction sted in the frst column of the table below, predict the sign (positive or…
A: The answers are given below
Q: ubidium-87 decays by B production to strontium-87 with a half life of 4.7 x 1010 years. What is the…
A:
Q: Mn(OH)2 has Ksp = 4.5 x 10-14. What is the molar solubility of Mn(OH)2 in a solution containing…
A: Given, Ksp = 4.5 x 10-14 concentration of Mn2+ from Mn(NO3)2 is = 0.10 M Solubility equilibrium of…
Q: 23. The reaction between solid sodium and iron(III) oxide is one in a series of reactions that…
A: Limiting reactant :- A reactant which is present in lesser number of moles than required as per…
Q: 18 of 21 I Review | Constants | Periodic Table Part B en 0.55 g of sodium hydroxide (NaOH) pellets…
A:
Q: The molecule (CH3)2N-PF2 has two atoms that can act as Lewis bases. With boron compounds, BH3…
A: According to HSAB principle: Hard acid prefers to bind with hard base. Soft acid prefers to bind…
Q: If atoms have mostly empty space, so how does matter stay strong? please explain
A: The empty space in an atom is the space where the nucleus (proton+neutron) is absent.
Q: 13. Which of these substances are used in the reduction of metal ores? I. CO II. С III. O2 IV. H2 a)…
A: Pyrometallurgy Extraction of concentrated metals from its ore. In earth crust the metals found in…
Q: Calculate the expected absorbance value of a 0.12 M aqueous solution of a solution if the extinction…
A:
Q: a The first four steps in the radioactive decay sequence of Pb-214 are B, B, a, B. To write the…
A: When a beta decay take place, then atomic number of the element Increases by one while atomic mass…
Q: 4. Explain why a protonated amine is water soluble:
A:
Q: Problem-7. pH of an aqueous solution of HCl is 2.699 at 25°C. Calculate the molarity of the…
A: pH of a solution is defined ad the negative logarithm of hydronium ion concentration. HCl +H2O…
Q: 9.) The bond length of nitrogen gas is 1.09 Å. What is the mean free path of one mole of nitrogen…
A:
Q: Draw the mechanism for the reaction to predict the major product of the following reaction. Br -LG…
A:
Q: salicylic acid point groups and symmetry detailed explanation
A: The point group of salicylic acid is
Q: 11.) Calculate the mass of the solid product formed when 1.5 L of o.50M NaOH is combined with 2.0L…
A:
Q: in a A solution prepared by mixing 22.2 mL of 0.400 M NaCl and 22.2 mL of 0.400 M KI was titrated…
A: Given, Volume of NaCl = 22.2 mLConcentration of NaCl = 0.40 MVolume of KI = 22.2 mLConcentration of…
Q: 14.) A real gas exhibits a behavior of an ideal gas at A.) High pressure and high temperature. B.)…
A: Solution 15. Expression for viral coefficients Z = PRTρ = A + ρB + .......... Where A and B are…
Q: 9.51 g mixture of metal hydrate BaCl2*2H2O with an unknown amount of KCI is heated to remove water…
A: A question based concentration terms that is to be accomplished.
Q: 1. Briefly explain the meaning of the following terms: ligand, complex, monodentate ligand,…
A:
Q: & stick + labels cis isomer trans isomer cis-trans isomerism not possible >
A: The cis-tans isomerization is a type of stereoisomerism. The molecule which contains a double bond…
Q: 4. Potassium dichromate is often used to standardize reducing agents like Fe2+: Cr:0, + 6Fe +14 H*…
A: Given data,Volume of Fe2+=34.00mL=0.034LMass of K2Cr2O7=398.5mg=0.3985gMolar mass of…
Q: Part A A solution is made by combining 15.0 mL of 17.0 M acetic acid with 5.58 g of sodium acetate…
A: Given: Mass of sodium acetate i.e. CH3COONa = 5.58 g. Concentration of acetic acid i.e. CH3COOH =…
Q: 10. Citric acid, C,H3O7, is a triacid written H3A. The diagram below shows the predominance domains…
A: We are given the triprotic acid(H3A) which is citric acid (C6H8O7).
Q: 2. In an oxidation-reduction reaction, the substance reduced always a) takes on oxygen atoms. b)…
A: Choose the correct option for reduced process--
Q: Discuss the role of solubility of a drug when formulating an oral solution for Paediatric…
A:
Q: Hydrogen can be prepared by suitable electrolysis of aqueous rubidium (Rb) salts A. True B.…
A:
Q: solution is made by mixing 0.250 L of 0.020 mol L-1 acetic acid and 1.10 g of potassium acetate (M =…
A: Here a solution contains 0.25 L of 0.02M acetic acid and 1.10 g of CH3COOK. Ka CH3COOH =1.8×10-5 .…
Step by step
Solved in 2 steps
- > EL session.masteringchemistry.com MasteringChemistry ROSTER-2019-SPRI-PULLM-CHEM-101 blackboard wsu Google Search MasteringChemistry: HW 8 KHW 8 Applications for Dilution Calculations K8 of8 Dilution as a procedure in analysis We sometimes purposely dilute solutions if the analyte concentrations wavelengths in the visible (and sometimes uitraviolet) range. Based on the dissolved solute's properties, we can quantify that solute's concentration are too high to permit an accurate measurement. For example, a spectrophotometer can measure the amount of light that passes through a sample solution for If the solute's concentration is too high, a relatively small amount of incident light having the wavelength that corresponds to the solute's absorption behavior will less light is absorbed, and the detector in the spectrophotometer can generate more reliable data. reach the dete ctor, which results in an inaccurate measurement (consider the result if you blocked the light with an opaque…The purpose of digestion process in gravimetric analysis is to: 1. O decrease the particle size of the precipitate 2. O evaporate the solvent 3. O dry the precipitate 4. O coagulate the precipitateTo /bbhosted.cuny.edu/webapps/assessment/take/launch.jsp?course_assessment_id%3_2032634_1&course_ id= 201483.. Remaining Time: 1 hour, 09 minutes, 31 seconds. * Question Completion Status: A student makes a solution by dissolving 25.4 g of NaOH into 450 g of water. What is the mass percent (m/m) concentration of this solution? QUESTION 4 13.9 g Sodium sulfate (Na2SO4) has a solubility of in water at 20 °C. Which of the following mixtures will yield 100 mL a saturated solution at this temperature?. O 0.50 g of Na,SO4 in 1.0 mL of water O 125 g of NazSO4 in 1.0 L of water O 0.50 g NazSO, in 100 mL of water O 4.3 g Na,sO, in 100 mL of water O 17 g of Nazs04 in 0.500 L of water Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers re to search 50°F Mostly sunn DELL DII home prt sc F10 F1 end inse F3 FS F9 F12 %23 %24 3 4. 5 7 8. Y D R E
- < Week 8-1 X Week 8-1 X C 2 https://app.101edu.co K Formula Bara | PDF: SIF: Caf + 1 - 131 Sunny A Z "7 S ALEKS-13 x A ALEKS-Ti A ALEKS-TX Week 8-1 X m X Ksp 1.7 x 10. 36 x 10 - 4.3 x 10 3.5 x 10- x - Exam No.: x co DESU Calc X(427) mam xLog In | Fe x # Q Search Question 8 of 16 Which of the following salts would have the greatest solubility in water? _____________ __________ S L hp الالا alt A) BaF₂ B) PbF₂ C) SrF₂ D) CaF₂ ال A ctri لا pause < G Aktiv Chen a backspace X ● ه به enter GWhich oft X+ 3 T ما دیا ... T shift end 1 7 home 1 A ے h 1:0A 1.59 g sample containing KI was analyzed gravimetrically and 0.0538g of Barium Iodate was recovered... express the results of this analysis as percent posassium iodide.) - O + 88 www-awu.aleks.com Files Lecture 16 - The Punic... Rhetorical Analysis Essa... Journal Assignment: Pre... Document3.docx ALEKS - Anniston Stovall... b Answered: One way the... O CHEMICAL REACTIONS Anniston V Solving for a reactant in solution 1/5 One way in which the useful metal copper is produced is by dissolving the mineral azurite, which contains copper(II) carbonate, in concentrated sulfuric acid. The sulfuric acid reacts with the copper(II) carbonate to produce a blue solution of copper(II) sulfate. Scrap iron is then added to this solution, and pure copper metal precipitates out because of the following chemical reaction: Fe(s) + CUSO 4(aq) Cu(s) + FeSO4(aq) Suppose an industrial quality-control chemist analyzes a sample from a copper processing plant in the following way. He adds powdered iron to a 100. mL copper(II) sulfate sample from the plant until no more copper will precipitate. He then washes, dries, and weighs the precipitate, and finds that it has a mass of…
- THE QUESTION IS AT THE PICTURE... 2 QUESTIONS ONLY.. AND THE GIVEN PROBLEMS IS THE ONE I TYPED........ATTACHED PHOTO IS MY ANSWER BUT PLEASE CORRECT ME IF I AM WRONGA. Concentration1. Place 3 mL each of 6N, 3N, & 1.5N hydrochloric acid in separate test tubes.2. Drop simultaneously equal lengths (about 1cm) of magnesium ribbon and note thetime it takes for the magnesium to dissolve in each use.B. Surface Area1. Weigh a small iron nail to the nearest hundredths of a gram and weigh an equalamount of iron fillings.2. Place them in a separate test tubes.3. Add simultaneously 3 mL of 3N hydrochloric acid and compare the rates of reaction.C. Temperature1. Place 5 mL each of 0.1N sodium thiosulfate solution into 5 test tubes.2. Place all five test tubes in the water bath and let it stand for 1 minute.3. Record the temperature of the water bath. Remove the first test tube from thewater bath and place it in the test tube rack.4. Add 1 mL of 0.1M sulfuric acid and stir with a glass rod.…Aktiv Chemistry → C < + app.101edu.co b Answered: A student combined [ENG SUB] I Belonged To You X + Time's Up! What quantity in moles of NH, are there in 70.3 mL of 0.200 M NH₂? 3 1 4 7 +/- G 0.0735 mol 2 3 5 8 6 9 =S 0 Submit X C x 100THE QUESTION IS AT THE PICTURE... 2 QUESTIONS ONLY.. AND THE GIVEN PROBLEMS IS THE ONE I TYPED............. PLEASE TYPE YOUR ANSWER PLEASE....A. Concentration1. Place 3 mL each of 6N, 3N, & 1.5N hydrochloric acid in separate test tubes.2. Drop simultaneously equal lengths (about 1cm) of magnesium ribbon and note thetime it takes for the magnesium to dissolve in each use.B. Surface Area1. Weigh a small iron nail to the nearest hundredths of a gram and weigh an equalamount of iron fillings.2. Place them in a separate test tubes.3. Add simultaneously 3 mL of 3N hydrochloric acid and compare the rates of reaction.C. Temperature1. Place 5 mL each of 0.1N sodium thiosulfate solution into 5 test tubes.2. Place all five test tubes in the water bath and let it stand for 1 minute.3. Record the temperature of the water bath. Remove the first test tube from thewater bath and place it in the test tube rack.4. Add 1 mL of 0.1M sulfuric acid and stir with a glass rod. Record the time it takes…
- A prod01-cnow-owl.cengagenow.com -Content C OWLV2 | Online teaching and learning resource fr... Fool Car note CAU EMAIL CANVAS Pirate Ship MYJSCC BLACKBOARD Vacancies | A... Birmingham New NCO [Review Topics] [References] Use the References to access important values if needed for this question. The mass of barium phosphate that is dissolved in 175 mL of a saturated solution is grams. Submit Answer Retry Entire Group 5 more group attempts remaining DEC 3 tv 3Course Contents... LA Problem Set Unit 5 Q10 Elemental analysis is performed on an organic liquid with a fishy odor. Vaporization of 260.0 mg of the compound in a 140 mL bulb at 130°C gives a pressure of 430.0 torr. What is the molar mass of this compound? Submit Answer Tries, 0/99 M CAL 8:00- esc This discussion is closed. 10:50- A CI 12:00 1 Q ! www 16. FI S OCT 2 21/ @ W 2 F2 C 43 # E 80 F3 $ 4 R a F4 er de % 5 T ↓ FS ^ 6 Y tv A MacBook Air Fó & 7 © U * F7 * +00 8 I DII FB ( 9 DD F9 0 O ) 0 Timer P F10 Notes 3 F11 Evaluate +11 = A F12 Feedback Send Feedback deleteQ1: What is the density (g/ml) of a 3.6M Sulfuric acid solution that is 29% H,So, by mass (Mwt. = 98)? Q2: Fill the blanks with suitable answers 1: The is the thing being dissolved. ......... 2: The branches of quantitative analysis are and 3. The filterability of the precipitate depend on the of practices. Q3: Which one is correct? 1. Molality changes with temperatures. 2. Molality does not change with temperatures. 3. Molarity changes with temperatures. 4. Normality changes with temperatures. Q4: What weight of pyrite ore (impure FeS,) must be taken for analysis so that the BaSO, precipitate weight obtained will be equal to one-half that of the percent S in the sample? Note: Mwt. of Ba =32, Mwt. of BaSo4 =233, Mwt. of FeS, =119