15. In a beaker, there are 45.7 grams of oxygen and 32.0 grams of nitrogen. What is the percentage of nitrogen in the beaker?

Q: In the first 15.0 s of the reaction, 1.6x10 mol of Oz is produced in a reaction vessel with a volume…

A: The average rate of a reaction is defined as the change in concentration of the products or…

Q: For each of the following pH values, provide the corresponding pOH value. Do not show your work.…

A: pH : it can define have the negative logarithm of H+ ion concentration. pH = -log[H+] When pH > 7…

Q: that does not match any of the answers given

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A: A question based on analytical separations that is to be accomplished.

Q: b (i) (ii) & (iii) please

A: A buffer resist the change in pH of the solution when small amount of acids or bases are added.

Q: Make sure I can see subscript

A: The balanced molecular reaction given is, => Pb(ClO4)2 (aq) + K2S (aq) --------> PbS (s) + 2…

Q: It is showing incorrect. Pls help

A: •As there is small calculation mistake in solution prodvided earlier. •Here given atoms which are…

Q: H. C ターC H. 3. H. H. H 40 41 H 43 H. 42 H. H. H. 44 H. 45 エーC ケーCI4 CIH CICIH エ エーU

A: Hybridization is the overlapping of same energy orbitals to form same energy orbitals.

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Q: HYDROGEN

A: “Since you have asked multiple question, we will solve one question for you. If you want any…

Q: 38. What is the difference between using a number as a subscript and using a number as a coefficient…

A: Answer-1 Subscript is used to indicate number of atoms. For example, in the formula CaCl2 subscript…

Q: Which matches the data?

A: Explanation Nuclear magnetic resonance spectroscopy (NMR) The importance is on the 1H proton NMR…

Q: For the titration of 25.00 mL of 0.1000M HCI with 0,1000 M NaOH, calculate the pH of the reaction…

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Q: Give detailed Solution..show work...don't give Handwritten answer..don't use Ai for answering this

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A: Electrophoresis- Separation of charged particles with the help of electric field. It consists of…

Q: но Ph

A: 1st Have to protect the carbonyl group

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Q: Calculate the sum of coefficients for the following equation balanced for acidic conditions. XO3-3…

A: The given equation is,XO33- +  Q H8O  →  Q H2O2  +  X2+1

Q: why is the final answer 9.3 millimole instead of 9.27- what sig fig rule reduces the # of sig figs.…

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Q: What is the similarity and difference between the Benedict's and the Fehling's tests?

A: Fehling's and benedict's are used to distinguish between aldehyde and ketones.

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Q: 2.5 x 10-5 is between which two numbers? O 1 x 10-6 and 1 x 10-7 O 1 x 10-5 and 1 x 10-6 O 1 x 10-4…

A: Given number is -5we need to find out where this number lies between from given set of dataGiven…

Q: If a sample contains 300 mg DNA in 0.25 mL, what is its concentration?

A: In the given question we have to calculate the concentration of DNA. Given data: mass of DNA = 300…

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A: Concentration of NaOH (M2) = 0.500 MVolume of NaOH (V2) = 25.0 mLInitial buret Reading = 2.20…

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Q: What is the coefficient the should be placed in front of phosphorus (P4)? * F2+ P4- PF3 Choose What…

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A: We have to draw Body-centered cubic (BCC) crystal structure

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A: Given,

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A: Entropy(S) refers to the extent of randomness of the system observed. 'S' re represented…

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A: -Select the parent chain with the longest possible continuous carbon chain with a maximum number of…

Q: Ok, thanks for explaining in details. But I dont understand where you get the values for trend line…

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Q: This shows as incorrect. Please help.

A: Moles of CCl4 taken = 4.15 mol (3 significant figures, 4, 1, and 5) Molar mass of CCl4 = 153.82…

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".