What are your preconceived notions about toxicology and safety of cosmetics?

Q: What is the approximate freezing point of a 0.50 M solution of dichloroacetic acid, HC2HO2Cl2 (Ka=5....

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Q: i need the answer quickly

A: Since you asked  specific multiple questions so, as per Q&A guidelines of portal I solved all th...

Q: The attached image shows the different amounts and concentrations for an iodide clock experiment, sh...

A: General Steps to be followed: We have to get the final concentration of solutions after mixing cont...

Q: A chemist must prepare 825. mL of 2.00 M aqueous aluminum chloride (AlCI,) working solution. He'll d...

A: Dilution of the solution: When we dilute a concentrated solution with pure water, the mole of solute...

Q: What is the true density of Zr, an HCP crystal, in g/cm3? Given: Atomic Number = 40  Atomic Weight =...

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Q: 9.) Use Hess's law to calculate AG°rxn using the following information. NO(g) + 0(g) → NO2(g) 2 03(g...

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Q: 7.) Given: Solubility product for a series of hydroxides: Ksp = 4.0 x 10-10 = [BiO*][OH] Ksp = 7.0 x...

A: Given: Solubility product for various hydroxides: BiOOH      Ksp = 4.0 x 10-10   = [BIO+][OH-] Be(OH...

Q: Calculate the molar mass of Al2 O3. Molar mass = = g/mol Calculate the molar mass of Al(NO3)3. Molar...

A: given :-  molecular formula :  Al2O3  Al(NO3)3  To be calculated :-  molar mass of given compounds

Q: The boiling point of 500.0L of water was determined to be 100.0°C. Ana has decided to increase the b...

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Q: 4. What is the osmotic pressure of a 0.0522M solution of C 12H22011 at 55 °C? A. 1.1 atm B. 1.4 atm ...

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Q: Which of the following would give a positive Tollens' test? Select all that apply. 2,5-octadiene 2...

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Q: Calculate Miller's coefficient for the surface that cuts the crystal's coordinates at the Cartesian ...

A: This question is related to crystal/ solid state. First we will plot the intercepts given on each ax...

Q: Consider the following unbalanced chemical equation. C5H12(1) + 02(g) CO2(g) + H20(1) If 19.6 grams ...

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Q: Part A KOH(aq) + NaOH(aq) → Express your answer as a molecular equation. Identify all of the phases ...

A: This question is related to chemical reactions. A chemical reaction is feasible when  no extra energ...

Q: A chemist prepares a mixture of ethanol and water at a temperature of 23.0 °C. He measures out 38.5 ...

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Q: 10% (w/w) aqueous potassium iodide has a density of 1.202 g/ml. Which of the following statements is...

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Q: tion 7 action solution is prepared with [S20g2] = 0.0500 M a ction is timed to the point where the r...

A: Initial concentration of [S2O82-] = 0.0500 M As it is consumed by 1.00 %  So, consumed [S2O82- ] = =...

Q: 4. What is the osmotic pressure of a 0.0522M solution of C 12H22011 at 55 °C? A. 1.1 atm B. 1.4 atm ...

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Q: Calculate the pH of an aqueous solution that contains 0.0060 M concentration of a certain acid (pKa ...

A: Given- Concentration of acid = 0.0060M pKa = 4.40    

Q: Multiple Choice 1. Salt or sodium chloride solution is prepared using distilled water (assume densi...

A: As per our guidelines, we are supposed to answer only one question. Kindly repost other question as ...

Q: Fes04(s) + 4 H2(9) 1. Consider the following chemical equation. a. How many moles of Fe3O4 can be ob...

A: Given - 3Fe+4H2O->Fe3O4+4H2  Weight of Fe=16.8g  Weight of H2O=10g

Q: `III IV A) >V>II>IV>III B) IV>II>I>V>III C) II>I>V>III>IV D) IV>I>V>II>III E) IV>II>V>I>III

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Q: Multiple choice 2. Which of the following statements is TRUE about the effect of 1 gram of ethan...

A: when a solute is added to a a solution then there is elevation in boiling point depending on the nat...

Q: 12) Solid chromium reacts with aqueous copper (II) nitrate to produce chromium (III) nitrate and sol...

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Q: Below is a plot of a typical cooling curve of substances. Describe what happens to the phase and tem...

A: This is a cooling curve , when phase transformation occur temperature remains constant 

Q: 2. A solution may contain any of the three group I cations. A white precipitate is formed upon he ad...

A: So, the most important cations in 1st group are Ag+, Hg2+2, and Pb2+. The solution may contain any o...

Q: Part A 17.6 mol HNO3 Express your answer with the appropriate units. HA ? m(HNO3) Value Units %3D Su...

A: Since you have posted a  question with sub-parts , we are entitled to answer the first three sub-par...

Q: [References) What number of molecules (or formula units) are present in 5.03 g of each of the follow...

A: Given -> Weight of compound = 5.03 gm  

Q: 6. The alpha values for any weak acid with n ionizable protons, Had, can be written as follows: [HnA...

A: To plot the distribution curve for the diprotic acid (Oxalic acid) for every 0.5 pH units from pH 0 ...

Q: 06) Responda às questões a seguir para cada uma das substâncias: a) Quantos sinais aparecem no espec...

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Q: Example 6.7-1 Determine the activity of liquid water at 30°C and at the saturation pressure, 10 bar,...

A: Activity of liquid water calculated below

Q: Multiple choice 1. What type of relationship does boiling point and vapor pressure exhibit? Choices...

A: Colligative Property of solution.,

Q: In the electrolysis of an acid solution, oxygen can be produced by the following half-reaction: 2H20...

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Q: . What willI be the pH if 75 ml 1.0 M HCI is added to 100 mL of 1.0M NAOH?

A: Hydrogen ion concentration is an important parameter of an aqueous solution. The concentration of th...

Q: What are the intermolecular forces present in acetone?

A: Note: As per company policy we are supposed to attempt first question only , please repost other que...

Q: Calculate the standard enthalpy change for the reaction at 25 °C. Standard enthalpy of formation val...

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Q: OH B A

A: Chemical formula from the given structure  A = C5H12O , B = C5H12O

Q: а. cat. HySO. b. OH HBr

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Q: Thermosetting polymers chemically changed at high temperatures. True O False

A: Thermosets are polymers in which a crosslinking reaction occurs  and creating a three-dimensional (3...

Q: An acidic solution (select both correct answers): Group of answer choices will turn red-blue litmus ...

A: Acidic solution  PH between 0 to 7  It contains may H+ ions   

Q: An acidic solution (select both correct answers): 1.will turn red-blue litmus paper RED 2.has a pH ...

A: Three types of solution  1) Acidic 2) Basic  3) Neutral

Q: You were asked to record observations before, during and at the end of the experiment. Below are a l...

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Q: 4.) Determine if each of the following is a spontaneous process, a nonspontaneous process, or an equ...

A: The answers are given below

Q: What number of molecules (or formula units) are present in 2.38 g of each of the following compounds...

A: To find number of molecules ( or formula units )from grams,  •Convert the given mass to moles.  • Mu...

Q: 28.2 g NO2 Express your answer in moles to three significant figures. ΑΣφ mol NO2 Submit Request Ans...

A: The number of molecules or atoms present in the one mole of the substance is equal to the Avogadro n...

Q: assiry eacN of the TOlTOwIng substantes: Clear All H+ Lewis Acid BCI3 Lewis Base H20 Can act as eith...

A: We have lewis acid and bases

Q: Draw the structural condensed formula of diethylaminoethane.

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Q: A 31.9 mM (millimolar) solution was made using 0.202 L of a 221 mM solution. What is the final volum...

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Q: Choosing the right design .reduces corrosion True O False O B.O to PCI5 = 2. True O False O

A: Avoid sharp bends in piping systems and provide thicker sections to reduce impingement effects or co...

Q: What factor generally does not influence the changes in boiling point, vapor pressure, osmotic press...

A: Solution is made up of two components: solute and solvent. Component which is present in major amoun...