How many grams of O are found in 7.40 x 1024 atoms of NO3- was produced?

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Q: Balance the reaction.   note: Add four numbers. ___________ Fe(OH)3   +   _________ H2SO4   →   __...

A:                                    Answer  For the balance the reaction number of atoms equal both r...

Q: Determine the pH of each of the following solutions: a. 0.125M NH,CI (aq), K, for NH3 = 1.8x105 b. 0...

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Q: I need help finding the therotical yield and the percent yield with the data provided:  mass of fil...

A: % yield = Actual yield  / theoretical  yield ×100

Q: If 90g of CaBr2 is dissolved in C2H3O2 to make 9L of the solution, what is its normality? MW- Ca: 4...

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Q: convert 1.44x10^4 lbs to g/mL.

A: Density of substance is calculated by dividing mass with volume. Unit of density is g/ml.

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Q: How much energy is needed to raise the temperature of a 65.3 g block of unknown metal from 11.5oC to...

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Q: A chemistry mixes 108 g of H2O, with 186 L of NO2 at STP.  How many grams of NO will be produced?

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Q: Use the table of electronegativities in your notes (textbook) to answer this question. Which of thes...

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Q: Express your answer to two significant figures and include the appropriate units. HẢ Value Units m =

A: Answer :  Mass of silver= w (let) Molecular weight of silver (M)= 107.86g No. Of electron transfer (...

Q: Which of the following is true for the acetylide anion? Select the correct response: It has excess e...

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Q: The compressibility factor for methane is given by Z = 1 + BP + CP2 + DP³. If P is in atm, the value...

A: Given:  

Q: Given the set of compounds below: isopentane 4-methylcyclopent-1-ene toluene Which compound/s will r...

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Q: Spectrum 99 97 95 93 91 89 87 85 83 81 79 77 4000 3500 3000 2500 2000 1500 1000 500 Wave Number (cm-...

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Q: Which Physical Properties of molecules can be determined based on character tables?

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Q: A sample is analyzed for chloride using the Volhard method. What is the percentage chloride as NaCl ...

A: Given, Weight of sample: 303.0 mg AgNO3 used: 40.00 mL of 0.1234 M KSCN used: 12.20 mL of 0.0930 M M...

Q: Problem #2 For the reaction 12 (g) At 500 K, K = 2.3 x 10 -10. A mixture kept at 500K contains l2 at...

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Q: Select from the dropdown menus if the hydrolysis products for each of the following reactions is cor...

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Q: b) Draw the structure with name of most abundant member of Sialic acids. What are the importance of ...

A: This problem is based upon Carbohydrates.

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Q: In each of the following pairs, choose the ion with the larger ionic radius: a) K* and Na* b) K* and...

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Q: A chemist went on a trip to Zambales to obtain a sample of chalcocite (copper (I) sulfide), one of t...

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Q: The reaction described by the equation 0,(g)+NO(g) → 0,(g) + NO,(g) has, at 310 K, the rate law rate...

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Q: Question 16 hich of the following classes of organic conpounds does pot contain eyges aldehydes ethe...

A: Aldehydes : R-CHO Ethers : R-O-R Amines : R-NH2 Amides : R-CONH2   "Like dissolve like"  

Q: Rei and Akari, two vinegar enthusiasts, are each tasked to determine the acetic acid content of thei...

A: Given: mass of KHP = 0.540 g Volume of KHP stock solution = 10.0 mL Volume of diluted KHP solution =...

Q: If 15.4 g of Cu react with excess nitric acid, how many grams of nitrogen monoxide are produced?

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Q: The reaction A -C was performed and the concentration vs. time data below collected. time, s 1 2 3 4...

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Q: an ionic compound formula please answer all 1. chromium(II) nitride 2. phophorus(III) chloride 3....

A: Ionic compound are formed from cation and anion by balancing charge.  

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Q: X CO Which one of the following has the smallest atomic radius? Li, Na, Be, Mg Edit View Insert Form...

A: Atomic Radius is the distance from the center of the nucleus to the outermost shell. 

Q: What is the formula of the ion formed when phosphorus achieves a noble-gas electron configuration

A: Atomic number of phosphorus is 15

Q: Will a precipitate {Mg(OH)2} form when 100.0 ml of 3.0×10-3 M Mg(NO3)2 is added to 100.0 ml of 2.0×1...

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Q: How many atoms of sulfur are in 10.18 mol of tetrathionate (S4O6^-2) ion?

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Q: Calculate the solubility of Mn(OH)2 in grams per liter when buffered at pH=9.7.

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Q: What is the molarity of a solution prepared by dissolving 20g of kMnO4 in enough water to make a tot...

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Q: Consider the rate law. rate = k[A]* Determine the value of x if the rate doubles when [A] is doubled...

A: Given  Rate (R) = k[A]x When [A] doubled  2R = k[2A]x 2R = 2xk[A]x 2R=2xR 2x = 21 So, x=1

Q: This is an unbalanced atom or molecule. * CHOICES: A. electron B. ion C. ampere D. potential energy ...

A: When any neutral atom gives an electron or takes an electron then ion is formed. 

Q: When the atom of Th-232 undergoes radioactive decay, an alpha particle, which has a mass of 4.0 a.m....

A: Given that, mass m= 4 amu  1 amu = 1.67377×10-27 Kg velocity v= 1.4×107 m s-1 Wavelength = ?

Q: 15. 16. A HO F F OH correct The formal charges are correct, but the ionic charge is incorrect arges ...

A: Detail description is shown below

Q: One milligram of Streptomycin sulphate contains the antibiotic activity of 650 mcg of streptomycin b...

A: Given, 1 mg of streptomycin sulfate = 650 mcg of streptomycin base.

Q: Which compound is normally produced by plants for fruit ripening? Select the correct response: ethen...

A: Which compound is normally produced by plants for fruit ripening ?

Q: (extraction, reactive extraction, recrystallization). Write a few sentences for each technique expla...

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Q: =14mole Ne hole a , of ena ar in a light bulb. Thc bulb Sat he sad has a frssure of -81ata shat is t...

A:

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.