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Q: Question is attached

A: The atomic number of Strontium is 38 and its symbol is Sr.

Q: practice pH a.) determine the pH of a nitric acid solution (HNO3) that has been prepared by mixing 2...

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer one question at a ti...

Q: Use the solutions listed to answer the questions that follow. A. 50. mL of 0.50 M NH3 (Kb = 1.8 x 10...

A: A buffer is a solution which resist change in pH and obtained when a weak acid and the salt of its c...

Q: Chemistry Question

A: we have to apply rate law

Q: Convert 32.8 mi/s2into km/hr2

A: 1meter = 1/1000 KM or 1KM = 1000meter 1meter = 10-3 KM 1hr = 60*60 Seconds = 3600 seconds so 1second...

Q: Draw a structure for each of the 3-bromo-4-chlorophenol:

A: A structure of the 3-Bromo-4-chlorophenol has to be drawn.

Q: Predict the chemical formulas of the compounds formed bythe following pairs of ions: (a) Cr3+ and Br...

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Q: Standard addition. An unknown sample of Cu2 gave an absorbance of 0.262 in an atomic absorption ana...

A: Given data contains, Absorbance value of unknown value of Cu2+ is 0.262. Volume of solution is 1.00m...

Q: REPORT SHEET LAB Moles and Chemical Formulas 5 A. Finding the Simplest Formula 43.52 0.23 43.81 43.9...

A: In this question, the given datas are - (1) Mass of empty crucible+ cover = 43.58 g (2) initial appe...

Q: Can I get helped

A: The the question is based on the mole concept.  it involves calculation of number of molecules of wa...

Q: What is a buffer?

A: The pH of any solution changes when an acid or base is added to any solution.

Q: Why is sodium iodide an ionic bond?    CLEAR PHOTO

A: The Condition required for the formation of an ionic bond between two elements are: 1).Two elements ...

Q: Calculate the molarity of 6.52 g of CoCl2 (128.9 g/mol) dissolved in an aqueous solution with a tota...

A: The given data contains,  mass of CoCl2 = 6.52 gVolume =75 ml  

Q: What are the common name of nasal drops or nasal spray that contain zinc chloride?

A: common name is sodium chloride

Q: Give the name of the compound formed when Ca and I atoms combine.

A: Ca + I2 ---> CaI2 So, the compound formed when Ca and I atoms combined is Calcium iodide.

Q: A dramatic change in pressure is a stress to a chemical system. O True O False

A: Solution -  A dramatic change in pressure is a stress to a chemical system.  (statement is true)  

Q: Write the Lewis structure for each molecule.a. NF3 b. HBr c. SBr2 d. CCl4

A: The lewis structure of given molecules has to be given.

Q: Write the concentration equilibrium constant expression for this reaction. 2+ 2 Cu (aq)+41I (aq)2 Cu...

A: The concentration equilibrium constant expression for the reaction can be written as the ratio of th...

Q: Draw the curved arrows and the product for each of the following nucleophilic addition steps. (a) (b...

A: Hi. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If you ...

Q: Several steps in the synthesis of optically active duloxetine, anantidepressant sold under the trade...

A: Formation of intermediate A: Formation of intermediate B:

Q: The following names are all incorrect. Draw the structure represented by the incorrectname (or a con...

A: The following names are all incorrect. Draw the structure represented by the incorrect name (or a co...

Q: Calculate the density of CO2 gas (MM = 44 g/mol) at a temperature of 47 ∘C, pressure of 2.0 atm and ...

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Q: Why is ammonia a covalent bond?

A: Nitrogen reacts with hydrogen to form ammonia. The molecular formula of ammonia is NH3. In ammonia t...

Q: Draw a structural formula for the product of each alkene hydration reaction

A: The structural formula of the product for the given reaction has to be given,  

Q: Reaction of benzylmagnesium chloride with formaldehyde yieldsalcohols N and P after protonation. Dra...

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Q: Which of the ten reactions in glycolysis are phosphorylations?

A: Glycolysis is the process by which one molecule of glucose is converted into two molecules of pyruva...

Q: How many lone pairs of electrons are on the central atom of CHCI3 and what is the molecular shape?

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Q: Calculate ∆S° values for the following reactions by using tabulated S° values from Appendix C. In ea...

A: Since you have posted multiple sub parts, the answer for first three subparts are given below. Kindl...

Q: Propose multi-step syntheses for the following transformations. Make sure you include a detailed exp...

A: The question is based on the concept of chemical reactions. we have been given toluene. we need to f...

Q: How many carbon atoms are present in 3.95 moles of carbon atoms? Give your answer in scientific nota...

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Q: How many grams of Al3+ are present in 4.12 grams of aluminum iodide?  How many grams of aluminum iod...

A: To find the grams, number of moles should be calculated.  Moles = Given mass/ molar mass 

Q: What is the mass, in g, of Avogadro's number of aluminum atoms? Enter your answer in the provided bo...

A: Avogadro's number = 6.0224 x 1023 = 1 mole Mass of Avogadro's of an element = Molar mass of the elem...

Q: Adding heat to a chemical reaction can speed up the reaction process, which of the following is the ...

A: Applying kinetic theory of matter Ek= 3/2 KBT

Q: Write the net ionic equation representing the neutralization of any strong acid with an ionic hydrox...

A: The net ionic equation representing the neutralization of any strong acid with an ionic hydroxide ha...

Q: 9) a.)What is the name of the compound formed when iron reacts with oxygen? Iron oxide     b.)Since ...

A: (a) When  iron is heated in air it reacts with oxygen to form the compound iron oxide. Where iron is...

Q: What would the simulation have shown if oleic acid was added to water? Would it look different than...

A: Explanation given as follows 

Q: Why is methane a covalent bond?

A: The covalent bond is formed by the sharing of the electron between the two atoms of comparable elect...

Q: What is the main structural difference between amylopectin and glycogen?

A: The main structural difference between amylopectin and glycogen has to be given.  

Q: Question #1A. Convert 66.80 kL to µL:B. Convert 32.8 mi/s2into km/hr2:C. Convert 346 K to °F:Questio...

A: Since you have posted multiple questions, we will solve only first question for you. If you want any...

Q: Draw a Fischer projection of: (R) 1-bromo--fluoroethane

A: The structure of (R) 1 - bromo -1 -fluoroethane is  The fischer projection of the compound has to b...

Q: 33. What is the product of the following reaction? NAOH, H,O

A:

Q: Q- If iron(lll) phosphate reacts with sodium sulfate to produce iron (lll) sulfate and sodium phosph...

A:

Q: I need help please?

A: 2 Mg + O2 → 2 MgO Moles of Mg = 8.3 mol   From the above balanced chemical equation we get that ; 2 ...

Q: There is only one law of thermodynamics. O True O False

A:

Q: why does the change for the atomic radii of the elements in period 3 from sodium to argon look simil...

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Q: Determine the molarity of a solution formed by dissolving 3.45 moles of NaCl in enough water to yiel...

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Q: Explain the Biodegradable Polymers ?

A: Biodegradable polymers: An alternative to the traditional and harmful polymer has been found out whi...

Q: Use the data from Appendix F to graph the variation ofatomic radius with atomic number for the rare-...

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Q: Boyle's Law for changing conditions (P1V1 = P2V2) - Consider a gas at constant moles, that is confin...

A: Applying pressure-volume equation P1V1= P1V1

Q: I need help with this particular question

A: d) 54.3 degree celcius