1. What has to happen to water after it is used, before it can be used again?

Q: Caffeine (C8H10N4O2) is a weak base with a pKb of 10.4. Calculate the pH of a solution containing a…

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Q: A gas mixture containing nitrogen gas (N2) and helium gas (He) has a pressure of 3.30 Torr. If…

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Q: Question 5 Which of the following describes a method to dilute a concentrated solution? O Adding…

A: A concentrated solution is one that has a relatively large amount of dissolved solute. A dilute…

Q: A 40.00 mL sample of 0.1000 M diprotic malonic acid is titrated with 0.0900 M KOH. What volume KOH…

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Q: 4. On observation of absorbant changes in a chemical reaction at a maximum wavelength of 540 nm are…

A: S.No. Absorbance  Time (min-1) 1 0.119 0 2 0.108 20 3 0.096 47 4 0.081 80 5 0.071 107 6…

Q: (a) Arrow story – indicate which bond(s) are broken and/or formed according to each indicated arrow…

A: In an organic reaction mechanism, a curved arrow represents the transfer of electrons. In an organic…

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A: Scuba divers working at great depth ascend to the surface slowly to avoid decompression surface. As…

Q: Practice assignment: Stoichionmetry On a separate sheet of paper, show the setup and answer for each…

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Q: 1. If a copper wire is placed in a beaker containing 1 M AgNO3, the clear solution is obs ved to…

A: Given: A copper wire placed in the AgNO3 solution turns blue and a flaky silver colour coating…

Q: Choose the best reagents to complete the reaction shown. Br Br 00 Q A B C D Į 1. NaNH2, A 2. H3O+ 1.…

A: We have been given an organic reaction and we have been asked the best reagent for given organic…

Q: Fresh liquid honey is a saturated s the liquid. What effect would st Explain why.

A: As the honey is a saturated solution of sugar. Two main sugar that are present in honey are glucose…

Q: HFag) HSO, (aq) F (aq) 7.

A: This is an example of acid base reaction.

Q: In which direction will the reaction shift if the following stress is applied? CO(g) + 3 H2(g)…

A: Reaction shifts that side which has less number of moles.

Q: In which direction will the reaction shift if 0.0500 M of each reactant and product are placed in a…

A: Equilibrium Constant (Kc) is the ratio between the product of the concentration of the products to…

Q: 44.2 mL of a 0.634 N KOH solution was needed to titrate a 2.63 g of an aqueous malonic acid solution…

A: Volume of KOH = 44.2mL Normality of KOH = 0.634N Mass of malonic acid = 2.63g

Q: Complete and balance the following half-reactions: Cl, CI HOBR HBr (acid solution) W,O, WO, (acid…

A: Here we have to balanced the following half reaction in acidic medium .  Here to balance O atom we…

Q: C6H;OH KNO, SİH4 C;H;N

A: According to solubility rule, "Like dissolves like " means  polar substances dissolves in polar…

Q: When using the formula PV = nRT, how would you rearrange it to solve for the unknown, T? OT=PV/nR…

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Q: Please help need help with 1 to 4

A: Since you've asked a question with multiple sub-parts, we will solve the first question for you. For…

Q: Help 1

A: The percent of water in the hydrate is calculated as,

Q: 49. The half-life for a first-order reaction is 32 s. What was the original concentration if, after…

A: The given data is as follows: The half-life for the first-order reaction = 32 s The original…

Q: help 11

A: This reaction is an Acid-Catalyzed Ester Hydrolysis in which a compound produce its corresponding…

Q: Question 6 What is the molarity of a solution containing 1.0 mol glucose in 2.0 L solution? O 0.50 M…

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Q: Which of the following aqueous solutions would you expect CaF, (s) to have the lowest solubility? a)…

A: Common ion effect decreases the solubility of the salt consisting of same ion.

Q: Draw the major product of this reaction. Ignore inorganic byproducts.

A: To solve this problem we have to complete the given chemical reaction.

Q: On the Kelvin scale, a temperature of 43°C is O 273 K O 43 K O 316 K O 230 K

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Q: 33 please help

A: Show the formation of different alcohol products in the following reactions

Q: Which statement best applies to the concept of corrosion Corrosion involves the reduction of a metal…

A: Answer: When a pure metal substance reacts with another substance and loses its natural forms, then…

Q: Draw one of the two stereoisomers of the major product from this reaction. Use a dash or wedge bond…

A: Organic reaGiven reaction is hydroboration followed by oxidation reaction.

Q: w the product of this reaction. Ignore inorganic byproducts. Br2 (2 equiv)

A: The question is based on organic reactions.     we need to identify the product formed and explain…

Q: Write the "equilibrium-constant expression" for Kc for each of the following" HBRO2 (aq) + H20 (I)…

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Q: 2. If a silver wire is placed in a beaker containing 1 M Cu(NO3)2, what will happen and why?

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Q: Which of the following statements is NOT TRUE for all voltaic cells Anode and cathode are in 2…

A: We have asked to find out the statements which are not true for all voltaic cells. The answer to…

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Q: Calculate the cell potential for an electrochemical cell at 298 K with an aluminum ion concentration…

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Q: Help 2

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Q: 4) Pick which one of the conjugated dienes would be preferred for 1,2-/1,4-additions as well as…

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Q: 5. Label the acid, base, CA, CB a) HCIO, + H,0 → H;O* + ClO2 b) H,SO, + H,0 → → HSO; + H;0*

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: Choose the best reagents to complete the reaction shown below. 00 Q A B C D E H₂(g) Pt H₂(g)…

A: The given reaction explains the reduction of alkyne to  corresponding trans-alkene.

Q: If a chemical equation is multiplied by some factor, then DH is also example: if 2 CO(g) + O₂(g) Ⓡ 2…

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