An unknown compound has the following chemical formula: NO3 where x stands for a whole number. Measurements also show that a certain sample of the unknown compound contains 9.1 mol of nitrogen and 13.45 mol of oxygen. Write the complete chemical formula for the unknown compound.

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A: Given formation of compound is :  Now, 

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A: Ans. (a) This is a systematic type error (a constant shift in one direction).  Systematic or bias er...

Q: III. Name one element in the Halogen Group.

A: Halogen group means, group 17 element in the periodic table. see below 

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Q: A В D 70 3.65 3.60 3.55 3.! 1.6 1.4 1.2 1.0 0.8 A B C D 0 8.5 8.0 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3....

A: Signal B, C& D: correspond to H (attached sp3-C). Signal A: correspond to H ( attached to sp3-C ...

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A: In this question we have to explain how to use experimental data to find percentage water and X.

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Q: HOw does yo Questions and Problems Q.7 An infant has a mass of 3.40 kg. What is the weight of the in...

A: To Solve this problem we have to do unit conversion .

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A: Hydration of a molecule  depends  upon extent of polarization of molecule. 

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A: The solution is as follows:  

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Q: A second order reaction has a rate constant of 3.14×10^-2 M^-1s^-1 at 305 degrees celcius. How many ...

A: Given :  Second order reaction  K = 3.14 x 10-2 M-1s-1 

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A: Given: Mass of Mg reacting = 0.0228 g. Volume of H2 produced = 22.57 mL = 0.02257 L                 ...

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A: A question based on tools in analytical chemistry that is to be accomplished.

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Q: How many single bonds that are not part of any double bonds can be found in the best Lewis stucture ...

A: So 2nd option is correct that is 2

Q: 3-(2-bromo-3-methylbutyl)-4-chloro-2-ethyl-1-methylcyclopent-1-ene How do you draw this molecule?

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Q: (a) How many grams of H202 are contained in a solution that requires for titration 14.05 mL of KMNO4...

A: Hii there, As there are multiple question posted. we are answering first question. If you need furth...

Q: 7. Why is it necessary to balance the chemical equation of your reaction? So you know what compounds...

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Q: What is the molarity of a 7.00% by mass ammonium chloride (NH4CI) aqueous solution at 20 °C? Density...

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Q: A student ran the following reaction in the laboratory at 635 K: 2 HI (g)  H2 (g) + I2 (g) When sh...

A: Moles of HI introduced = 0.404 Volume of container = 1.00L Concentration of HI = molesVolume=0.4041....

Q: Describe the difference between bond polarity and molecular polarity.

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Q: Which molecular shapes are always polar, regardless of the atoms in the molecule? (Hint: there are 5...

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A: molecular solid is a type of solid in which molecules are held together by van der Waals forces. 

Q: What is the wavelength (in nm) of a 5.3 g marble that is moving at a rate of 3.0 m/sec?

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Q: What is the equilibrium arrows for the reaction and how do you find it?

A: Answer :

Q: Calculate the molar solubility of aluminum hydroxide in a solution buffered at pH = 4.50. Al(OH)3 (...

A: Consider the given information is as follows; pH = 4.50Ksp = 1.3×10-33       

Q: hich of the following choices correctly arranges the given elements in increasing electronegativity:...

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Q: Bis(2-pyridylmethyl)amine with a florescent

A: In this question we have to explain that how we have combine Bis(2-pyridylmethyl)amine with a flores...

Q: Suppose a 250. mL flask is filled with 0.20 mol of H, and 0.40 mol of HI. The following reaction bec...

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Q: dime the highiighted chemical group in each molecule. Lewis structure name of highlighted group H–0:...

A: The compounds given are,

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A: Given,  The incorrect statement from the following statements is:

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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.