49. Solid raw materials in cosmetics that will gradually react with carbon dioxide in the air to form harsh compounds that can irritate the skin are.... A. zinc stearate B. bentonite C. ZnO D.TiO2 50. The color of glowing white skin in the skin is determined by the compilers of .... A. eumelanin B. phaeomelanin C. oxyhemoglobin D. keratohyalin

Q: The solubility of a precipitate can be affected by: Select one: a. temperature, coprecipitation,…

A: Solubility is defined as the product of molar concentration of ions raising stoichiometric…

Q: For eac. ne following compounds, decide whether the compound's solubility in aqueous solution…

A: The solution is given below -

Q: OC,Hs HOCI, , Ag (31) NHCOC;Hs

A: This is a aromatic Electrophilic substitution reaction in which electrophile attack on benzene ring…

Q: Why are sodium and lithium typically analyzed by atomic emission while transition metals such as…

A:

Q: Describe optimization of lead compound with examples and explain the receptor-based classification…

A: The process in which a drug candidate is made after the starting lead compound is recognised is…

Q: The concentration of is given in the follor is given in the following table: \table[[in, [NO]10² mol…

A: The objective of this question is to calculate the slope of the plot of ln[N2O5]/mol.dm^3 vs. time…

Q: Figure out the strontium isotope ratio using the isochron equation given pXRF results in ppm for…

A: The radioactive decay of rubidium-87 (87Rb) to strontium-87 (87Sr) was the first widely used dating…

Q: Write detailed answers to the following. a. Discuss the structure of diborane. b. Explain how…

A:

Q: 34. A 0.1% sodium arsenite solution is used as an adsorbent solution… a. CO2 b. NO2 c. HCl d. O3…

A: 34. A 0.1% sodium arsenite solution is used as an adsorbent solution…a. CO2b. NO2c. HCld. O3   The…

Q: Use the References to access important values if needed for this question. A student weighs out a…

A: Molarity: It is defined as the no. Of moles dissolve in 1L of solution.

Q: Calculate the Ksp for magnesium fluoride if the solubility of MGF2 in pure water is 0.000234 M. a.…

A: The Ksp for magnesium fluoride, MgF2 is to be calculated if solubility of MgF2 in pure water is…

Q: 2. Balance the following cquations. a. Fe2S + HCI FeClh + H2S b. C-H + O2 CO2 + H2O C. C&H.O + O2…

A: All the balanced equations have been given below

Q: so()2s0(g) + O2(g) f an equilibrium mixture of the three gases in a 11.0 L container at 1.15×10°K…

A: Equilibrium constant is defined as ratio of concentration of to the concentration of reactant [O2]=…

Q: 1A H2A Li Be Na Mg 38 48 58 68 7B8B K Ca Sc Ti V Cr Mn Fe Co 18 2B Ni Cu Zn 8A 3A 4A 5A 6A 7A He B C…

A: Highest value of 'n' in electronic configuration indicate the period of the element. Number of…

Q: Which of the following combination of two techniques will lead to the LOWEST yield in barium sulfate…

A: >10min digestion time, ashless filter paper.

Q: 1. Lead (II) Cromate PbCrO4 is a slightly soluble salt with a Ksp = 2.8 x 1013. %3D a. Write the…

A:

Q: 1. Assuming that the light energy to 49.4KJ, what would be the maximum wavelength of light with…

A:

Q: Calculate the Ksp for magnesium fluoride if the solubility of MgF2 in pure water is 0.000234 M.…

A: Dissociation Reaction of MgF2 is as shown below:                MgF2        -->       Mg2+     +…

Q: Mg + O2 - Mgo Which of the following shows a balanced form of this equation?

A: It is a combination reaction Mg (s)combines with O 2 (g) to form Mgo (s)

Q: (()=H(g) +I(g) alculate the equilibrium concentrations of reactant and products when 0.389 moles of…

A: Equilibrium constant is defined as ratio of concentration of to the concentration of reactant…

Q: Please help Are alkali metals or alkali earth metal more reactive why?

A: Alkali metals are group 1 elements and alkaline earth metals are group 2 elements. These are very…

Q: The volume of water needed to dissolve 0.0691 grams of calcium chromate is L. Assume no volume…

A:

Q: or each of the following compounds, decide whether the compound's solubility in aqueous solution…

A: The question is based on the concept of solubility . we need to identify the salts who solubility…

Q: Solid lead(II) nitrite is slowly added to 150 mL of a potassium hydroxide solution until the…

A: Answer: For a sparingly soluble compound it is considered that all its dissolved part will be in…

Q: sid ate X OWLV2 | Onlinet X al 112021 X C Ais*war…

A:

Q: one of the following indicators is suitable for iodometry O a. mordant black O b. methyl red O c.…

A: In this question, we will see which indicator is used for iodometry titration.  You can see details…

Q: 16. Calculate AS for the reaction: 2 SO:(E) – 2 SO2E) + 02(3) AS in J/mol K for: SO(E) = 248.1,…

A: Change in entropy of reaction (ΔS) is calculated by difference of entropy change of Products minus…

Q: For each of the following compounds, decide whether the compound's solubility in aqueous solution…

A: We have to choose the pH that has highest solubility of the given compounds.

Q: 21 20 JgVI Jaåll :The application of (N-8) rule for group IV elements indicate That silicon is…

A: Octet Rule: Octet rule states that an atom which has eight (8) electrons in its valence shell is…

Q: The reactivity of the alkali metals are arranged in the increasing order of ________.  A. Fr, Cs,…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Use the References to access important values if needed for this question. The solubility of AIPO4…

A:

Q: Write a balanced chemical equation based on the following description: When a solution of…

A:

Q: The equilibrium isotope exchange reaction between hydrogen and deuterium

A: Deuterium (D or 2H) is an isotope of hydrogen. The molecule D2 undergoes an exchange reaction with…

Q: 1. Write the dissociation equation and the Ksp expression for Ca.(PO4)2

A: A dissociation equation represents breaking of compound in two or more species(ions).Dissociation…

Q: Use the References to access important values if needed for this question. Consider the following…

A: 2HI(g) <---> H2(g) + I2(g)  Number of moles of HI = 3.49 moles ; H2 = 0.660 moles  I2 = 0.392…

Q: both sodium phosphate and magnesium sulfate were found at the crime scene to help the police narrow…

A: This question belongs to chemical compound.

Q: Possible death for animals and human being is expected for 430 ppm of chlorine gas exposure in 30…

A:

Q: Addition of sulfanilic acid and alpha-naphthylamine changes the color nitrate ions from colorless to…

A: Nitrate reductase

Q: The Mohr's salt sample is diluted using a 0.5 M H,SO, / H;PO, solution. The function of the sulfuric…

A: Mohr's salt is a double salt if ferrous sulphate and ammonium sulphate. The chemical formula of…

Q: 12. What are the common units of reporting concentration in analytical chemistry. Include the…

A: Concentration : The concentration is the abundance of a constituent divided by the total…

Q: 2.1 u Be 1.0 1.5 NDF BC 1.5 25 3.0 3.5 4.0 Na Mg 0.9 1.2 Al Si 1.5 1.8 2.1 S CI 3.5 3.0 P K Ca Sc…

A: Given :  To find the O-H bond in water as either pure covalent, polar covalent or ionic

Q: Write the Ksp expression for the sparingly soluble compound zinc hydroxide, Zn(OH)2. Ksp If either…

A: Solubility product (Ksp)  of a sparingly soluble salt  is defined as the product of ions produced at…

Q: 7. If a certain hydrogen peroxide solution is 20- volume hydrogen peroxide, it contains: 1. 3%…

A: Volume strength of hydrogen peroxide is defined as the volume of oxygen liberated from unit quantity…

Q: Find the attached file.

A: An equilibrium is known to be dynamic in nature as it contains of forward reaction where reactant…

Q: 2. Write Ksp expression for each of the following: a. Ca³(PO4)2 b. Cu(103)2 c. AgCl

A:

Q: Which of the following is most suitable for filtering the crystalline precipitate BaSO4 out of the…

A: When two soluble reactants in an aqueous solution are mixed together, an insoluble product may…

Q: 17. Write the ground state electron configuration for each atom and ion pair. a. Ni, Ni+ c. Y, Y* b.…

A:

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.