The term LD 50 refers to the concentration of a drug or chemical that will kill 50% of the population exposed to the drug. The LD 50 of a heavy metal is 5 ppm. What is the LD 50 for the heavy metal in ppt and ppb?

Q: 6. Draw the following compounds. a. 2-pentanol b. ethylpropylamine C. methyl propyl ether d. butyl…

A: We can draw structures of organic compounds from their nomenclature.  From the name of compounds, we…

Q: a (UM) 150 142.7 10 135.4 15 128.1 20 120.8 25 113.5 30 106.2 What is the rate constant, k? t (min)…

A: We will use integrated rate law for zero order reaction to calculate rate constant.

Q: cylinder with a fixed volume of 1250 mL exerts a pressure of 36.5 psi at 98.0 C. What will the…

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Q: The ion with the smallest diameter is Br CI F 02- 00

A: The ionic species given are Br–, Cl–, F–, O2–.

Q: Consider the following standard reduction potentials. Reduction Half-Reaction Eo (volts) Cr3+(aq)…

A: Given data of equations :  Cr3+(aq) + 3e- → Cr(s)    E° = -0.74 V  Cd2+(aq) + 2e- → Cd(s)      E° =…

Q: What is Sº for B in the reaction 4 A → 2 Bif AS°(rxn) =-106.2 J/mol K? [S° (A) = (205.0 J/mol K)] ●

A: We have to use the following formula   ΔSorex=∑npSop-∑nrSornp=coefficient of productns=coefficient…

Q: 1. Caffeine is a bitter stimulant drug and is found in varying quantities in seeds, leaves, and so…

A:

Q: Predict the electron-domain and molecular geometries for a. SeCl2, b. CO3-.

A: VSEPR theory: The structure of a molecule can be determined by using the VSEPR theory. According to…

Q: Select all of the unique features of modern batteries that are improvements over the ClassRoom…

A: To identify the unique features of modern batteries.

Q: 8. Circle and label all functional groups in the following molecules. a. b. j d. HO H C HO 910 H3C O…

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Q: What are the list of difference between SN1, SN2, E1, and E2? (such as the type of nucleophiles…

A: all these are the reaction mechanism which is being followed when a substrate is attached by…

Q: Draw the starting structure that would produce this product under these conditions. Br Select to…

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Q: А. B. С. D. Е. Br Br Н H OH Which of

A: We have Given set of transformations in which alkylation is needed in the following:

Q: Using the JSME editor (2) draw the molecule with formula C4H7CIO₂, whose ¹H NMR spectrum is shown…

A: Molecular formula - C4H7ClO2

Q: the correct structure for organic product or products -CH2-CH3A NGON??? _E_OH + NH₂-CH₂-CH-CH₂->?? +…

A: Ester will undergo hydrolysis in presence of base to give sodium salt of carboxylic acid and…

Q: Convert 100. ppm to %w/w. The correct value of %w/w

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Q: How much LiCl would be needed to make 750mL of 100mM LICI? .750L .100M How many moles of NaCl are in…

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Q: Question 2 of 22 Provide the correct IUPAC name for the compound shown here. HO

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Q: What is the mechanism for the form- ation of B-Eudesmol from isopentyl pyrophosphate? по-ра CH₂ OH

A: At first one molecule of isopentyl pyrophosphate(IPP)  and one molecule of dimethyl…

Q: Question 2 Arrange the following molecules in increasing order of: H₂ H3C H3C H₂ с A CH3 CH 3 H3C.…

A: -> volatility is inversely proportional to boiling point. -> Alcohols have higher boiling…

Q: consider the balanced chemical equation that follows 2Fe(s) +3S(s) ---> Fe2S3(s)   this equation…

A: Given reaction:  2 Fe (s) + 3 S(s) ==> Fe2S3 (s)  Given moles of Fe = 3.5 mol  From balanced…

Q: What is the volume of a quantity of a gas at 262 degrees C, if its volume is 172 mL at 12.3 degrees…

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Q: In which mode of chromatography do solute and solvent molecules compete to interact with functional…

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Q: Ignoring the possibility of stereoisomers, what is the IUPAC name of the following substance?…

A: Since,Rule of IUPAC-1) Longest chain as parent chain.2) Numbering start from those side where more…

Q: 7. Name the following compounds. a. H3C- b. H3C- H₂ H₂ C-C OH C H - CH3 C. H3CO-CH3 -CH3 HO- a. b.…

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Q: A rock contains 0.688 mg of 206 Pbfor every 1.000 mg of 238 Upresent. Assuming that no lead was…

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Q: For ethane the numerical value of a is 5.507 and the numerical value of B is 0.0651. Use The van Der…

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Q: 7. The are many different monosaccharides that are classified as Aldohexoses. What is the difference…

A: Aldohexose word comes from 2 words-  1- aldose which means it has aldehyde group 2- hexose which…

Q: Is there a way without Birch Reduction?

A: We have to synthesis the given molecule from ethene, without using Birch reduction. Introduction:…

Q: Which represents an efficient synthetic route to go from an alkane to an alkene? O elimination with…

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Q: ОН

A: We have to synthesis the following molecule. Introduction: Epoxide ring opening reaction, oxidation…

Q: Provide the correct systematic name for the compound shown here.

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Q: What is Sº for A in the reaction 3 A → 2 Bif AS°(rxn) =-282.7 J/mol · K? [S° (B) = (240.0 J/mol ·K)]

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Q: Write the balanced half-reaction equation for when H2O2(aq) acts as an oxidizing agent in an acidic…

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Q: A sample of Nitrogen occupies a volume of 200mL at 60 degrees Celsius  and 500mmhg of pressure.…

A: Given -> Volume (V1) = 200 ml Temperature (T1) = 60°C = 60 + 273 = 333 K Pressure (P1) = 500 mmHg…

Q: A chemist needs 19.89 mL of 1.36 M NaOH. What volume in mL of 3.29 M NaOH must be diluted in water…

A: To solve the given question, we need to use dilution law to calculate the required volume of 3.29M…

Q: Iron (III) oxide reacts with carbon to give iron and carbon monoxide: Fe2O3(s) + 3C(s)…

A: Given: Mass of Fe2O3 = 23.2 g Molar mass of Fe2O3 = 159.69 g/mol Molar mass of C = 12 g/mol

Q: A galvanic (voltaic) cell consists of an electrode composed of cadmium in a 1.0 M cadmium ion…

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Q: Consider the following reaction at 298 K.   C(graphite)+2Cl2(g)⟶CCl4(l)Δ?∘=−139 kJ Calculate the…

A: C(graphite)+2Cl2(g)⟶CCl4(l)  T= 298K , Δ Ho = -139KJ = -139000J  ΔSosurr = - ΔHo/T   = -…

Q: # 1-3. Name these three haloalkanes, in order from left to right. H H H H III H=C=C=C=C=Br JULI Η Η…

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Q: Suppose the molecule below is in basic aqueous solution. Is keto-enol tautomerization possible? . If…

A: Keto enol tautomerism is a type of structural isomerism. A chemical equilibrium between the keto and…

Q: QUESTION 3 Refer to the neutralization of nitric acid by sodium hydroxide discussed in the…

A: Here the acid is nitric acid, HNO3 and the base is sodium hydroxide, NaOH. We need to find the heat…

Q: 2) Knowing that the pka of HCI is -7, match the pKas to the following compounds. Show your…

A: Here we have to check the relative acidity of given acids with respect to HCl. we know that higher…

Q: For each of the salts (assume at this point completely soluble), write the equation for dissociation…

A: “Since you have posted multiple questions, we will provide the solution only to the first question…

Q: Calculate the mass, in grams, of solute present in 375 g of 1.51% ammonium chloride solution.

A: This is a simple problem of calculating mass of solute from the strength of the solution in w/w form…

Q: Which of the following correctly describes the stationary and mobile phases for a reversed-phase…

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Q: How many grams of Kr are in a 6.22 L cylinder at 97.8 °C and 9.95 atm? mass: g

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Q: Think about the structures of the molecules. a) CH3COCH2 CH₂ (butanone) b) C(CH3)4 AHvap. In each…

A: Boiling point is the temperature required to transform liquid to gas . Where vapor pressure is the…

Q: SPECTROSCOPY - Attached are the IRs for Caffeine and Adenine (Molecular structures on Lab Manual p.…

A: The structure of caffeine and adenine are represented as below: