The wavelength of the second Balmer line (the second longest line in the Balmer Series) of an unknown hydrogen like atom (i.e., 1 electron) is 12.50 nm. Enter the atomic number of the element that generated the row.

Q: 7. Order the following species from smallest to largest size. Ba, Se, Au, Ba2+, Se²-, P A. Se < P < ...

A: Atomic size is defined as the distance between the centre of the nucleus of an atom to its outermost...

Q: Silicon carbide (SiC) is an example of what type of solid? molecular covalent network ionic metalli...

A: We have to find out nature silicon carbide

Q: A 9.37 g sample of an unknown element was determined to be 0.0714 moles. What is the identity of the...

A: We know that,  Number of mole = (Given mass) / (Molar mass)  Molar mass = (Given mass) / (Number of ...

Q: 1. NaCN, HCN (а) 2. HСІ, Н20, Нeat

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Q: What is the major product of the following reaction? H30 HO, HO. CO2 II IV

A: So option A is correct

Q: In the reaction between MnO₄- and Fe²⁺: 8H⁺(aq) + MnO₄-(aq) + 5 Fe²⁺(aq) → Mn²⁺(aq) + 5 Fe³⁺(aq) + 4...

A: A question based on stoichiometry that is to be accomplished.

Q: amount

A: Since you have asked multiple questions, we will solve the first question for you. If you want any s...

Q: Calculate the degree of unsaturation. Assign the relevant peaks in the IR spectrum. Assign the peaks...

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Q: The band gap for the elemental semiconductor silicon is 1.11 eV. That energy corresponds to what wav...

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Q: What is the role of F in the following mechanism? A + B -> 2 C fast C + D -> E + F slow C + F -> ...

A: Slow step of a chemical reaction is the rate determining step of a reaction.. Therefore rate of a re...

Q: Calculate the amount of phenol red (in ug) for unknown 1 and 2. phenol red formula weight is 376.4

A: Concentration of unknown 1 = 2.10 uM Concentration of unknown 2 = 4.84 uM Molar Mass of phenol = 376...

Q: Suppose a 250. mL flask is filled with 0.60 mol of O, and 0.30 mol of NO. The following reaction bec...

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Q: 2.050g of an unknown sample contains H, S, and O. If the compound contains 0.0500 g H and 0.800 g of...

A: The mass of the unknown compound is = 2.050 g The mass of hydrogen in this compound is = 0.0500 g Th...

Q: Draw the best 2D Lewis structure and the 3D structure for each of the following. Determine the elect...

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Q: G. perbromic acid type: formula: H. tetraphosphorus hexasulfide type: formula: I. tin (IV) sulfide t...

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Q: Which of the following expressions is the correct equilibrium-constant expression for the reaction b...

A: The equilibrium constant of a chemical reaction is the value of its reaction quotient at chemical eq...

Q: True or False. Write the word “reducing” if the statement is correct, otherwise write “non-reducing”...

A: The answer is as follows:  

Q: Current Attempt in Progress 2.050 g of an unknown sample contains H, S, and O. If the compound conta...

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Q: Green plants use light from the Sun to drive photosynthesis, a chemical reaction in which liquid wat...

A: Given Reaction:- CO2(g) + H2O(l) -----&gt; C6H12O6(aq) + O2(g) Balanced reaction:- 6CO2(g) + 6H2O(l)...

Q: When comparing two sets of data, which one is more precise? Select one: O The one with the smaller s...

A: In the measurement of a set, accuracy is the closeness of the measurements to a specific value or kn...

Q: How many moles of S are in one mole of Al2(SO4)3? O 4 mol S O 3 mol S O 1 mol S O 2 mol S

A: We know that,  Number of mole = Given mass / Molar mass  Mass = Number of moles X Molar mass   

Q: Decytospolides A and Bare fungal natural products that are toxic to some cancer cells, In a synthesi...

A: Concept : 1) NaH is used as base for deprotonation.  2) Grignard reagent is used as nucleophile here...

Q: What mass of KOH is necessary to prepare 830.0 ml of a solution having a pH = 11.49? Mass = g

A: Find the mass of KOH....

Q: A liquid and a solid of the same substance coexist in a flask as shown in the diagram below. The sys...

A: A question based on matter that is to be accomplished.

Q: When the following equation is balanced, the coefficient of H,0 is Cа (9) + H,0 () > Са(ОН), (аq) + ...

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Q: Give the following information for the encircled element in the molecules as shown below 6) CH3CHCEN...

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Q: Consider the imaginary reaction 2E (2) + F(g) + G(g) K = 1.8 x 10-5 If you start with 2.0 M of chemi...

A: Equilibrium constant is defined as products concentrations divided by reactant concentrations to the...

Q: WHAT IS THE UNCATALYZED NEUTRAL REACTION IN WATER (need to have substrate, product, and qualitative ...

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Q: In analytical chemistry, what is a standard method? Include any sources you used to answer this ques...

A: Solution:  Definition of Standard method- In analytical chemistry for quantitative analysis,  standa...

Q: Give the major organic product(s) for each of the following reactions

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Q: E2C.8(b) Estimate AH®(750 K) for the reaction N,(g) + H,(g) → NH,(g) from the listed value of the st...

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Q: 1. Which of the following pairs of substances in the liquid state, would have greater vapor pressure...

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Q: 4. The hybridization of the central atom in ClF3 is A. sp2 B. sp3 C. sp3d D. sp3d

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Q: How many atoms are in 25.6 g tin? O 3.01x 1024 atoms O 3.01x 1023 atoms 6.02 x 1024 atoms O 1.30 x 1...

A: We have to predict the number of atoms.  

Q: The concentration (M) of an aqueous methanol produced when 0.200 L of a 2.00 M solution was diluted ...

A: Given, Volume of concentrated solution = 0.200 L Strength of concentrated solution = 2.00 M Volume o...

Q: Which of the following best explains why, in the class demonstration, the container holding liquid n...

A: Nitrogen gas is a diatomic gas.  In liquid form, it is called liquid nitrogen.  Keeping it in a cont...

Q: The reaction 2NO (g) + Cl2 (2) A 2NOCI (g) has K = 100 at 300K. A particular equilibrium mixture at ...

A: The equilibrium constant of a reaction is the ratio of the product's concentration to the concentrat...

Q: 1. Compare and contrast the bonding present in each of the following: 02, CO, and MgO. Identify the ...

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Q: Compare the similarity and the differences between Carbon, Nitrogen, Oxygen, Phosphorus, and Sulfur ...

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Q: A thermodynamically-controlled process describes a reaction that generates the most stable product O...

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Q: What type of solid is white phosphorus, P4? Group of answer choices ionic molecular metallic network...

A: In white phosphorus molecules 6 P-P Sigma bond present and four lone pair electron present.   Angle ...

Q: What is the atom ratio between Cand H in C2H5OH? O 2/6 O 2/5 O 1/5 O 2/1 Save for Later

A: Atomic ratio is the ratio of different atoms present in a compound. 

Q: Ammonium phosphate ((NH,), PO is an important ingredient in many fertilizers. It can be made by reac...

A: Phosphoric acid reacts with ammonia to form ammonium phosphate. The equation for the balanced chemic...

Q: A solution of potassium permanganate of unknown concentration was analyzed against a standard of var...

A: The absorbance of the potassium per magnet solution depends on the concentration of the solution. If...

Q: True or False. Write the word “reducing” if the statement is correct, otherwise write “non-reducing”...

A: Lobry de Bruyn-van Ekenstein Transformation is the base or acid catalyzed transformation of an aldos...

Q: View Policies Current Attempt in Progress A 9.37 g sample of an unknown element was determined to be...

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Q: the concentration of H3O+ of seawater is 3.16 x 10-9. what is the pH of seawater?

A: Ph depends on concentration of H+ ions...

Q: What mechanism predicts the same rate law as the data? (Can be multiple or neither)

A: The slowest step of the reaction is the rate determining step of the reaction. Rate law of the react...

Q: Helloform reaction

A: Given reaction is the haloform reaction Complete this reaction = ?   

Q: 1. How many MOLECULES of nitrogen monoxide are present in 3.82 moles of this compound ? molecules. 2...

A:  no of molecules = mole× No