If calcium has an emission line at 657 nm, the electron travels from what energy level to n = 2? n₁ =? 5 1 4 3

Q: Consider the following equation: 2Na + 2H2O -- > 2NaOH + H2 If 25 grams of sodium metal were allowed…

A: Sodium reduces water to produce hydrogen gas.

Q: Calculate the mass, in grams, of solute present in 0.478 g of 12.5% w/w ammonium nitrate

A: Use the percentage of ammonium nitrate to calculate the mass of ammonium nitrate in the solution.…

Q: What is the correct expression for the equilibrium constant K? Select an answer and submit. For…

A: Equilibrium constant is defined as ratio of  products concentrations to the reactants concentrations…

Q: -5 A 5.23 X 10 mole protein is dissolved in 31.2 mL of water at 28°C. What is the osmotic pressure…

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Q: What is one acidifying process that produces H+ ions?

A: We have asked to state one acidifying process that produces H+ ions.

Q: 4. Draw Lewis structures for the following (include formal charges): (a) BH4; (b) OPCI3; (c)…

A: Note-Since you have asked multiple questions, we will solve the first question for you. If you want…

Q: State the stereochemical relationship between the following pairs of isomers. Indicate if they are…

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Q: You have a separatory funnel that contains a solution of 2-chlorobenzoic acid and 4-methylaniline in…

A: This question is based on extraction of compounds from a given mixture.

Q: lance the reactions or half-reactions in redox reaction and determine juivalent mass (EM) of the…

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Q: I The compound with the structure below is an anticancer drug for renal and liver cancer. What is…

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Q: 8. How many moles of bromine gas are there in a volume of 80.0 L at STP? 9. How many atoms of…

A: The  number of moles can be calculated as:

Q: Based on the formulas of the following solutes, which compound would have the smallest van't Hoff…

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Q: 4. Predict the major organic product(s) for the following reactions. (2 equiv) H H NaOH A 1. NaOH 2.…

A: a) Pentanal in presence of Sodium Hydroxide undergoes an aldol reaction through the abstraction of…

Q: Imidazole (C3H4N2, FM 68.08) is a weak base with pKb = 7.01. You wish to make 250.0 mL of a  0.300 M…

A: According to the question we have a weak base Imidazole, The formulae (molar ) mass for the…

Q: In the neutralization reaction below17.3 mL of H2SO4 solution are required to neutralize 32.2 mL of…

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Q: How does a proton affect an element's properties?

A: Matter is composed from the tiny particles known as atoms . Atoms are made from the subatomic…

Q: What ligand can X be in order for the reaction between [PdI3X]2- and NH3 to form cis-[PdI2(NH3)X]-?…

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Q: B H for each compound circle each atom to that could hidrogen bond with water A H ---- H-C с 1 H H H…

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Q: Performing the same experiment described on your lab manual, a student used a 0.400 g sample of…

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Q: (S)-carvone is an optically active compound with a specific rotation of +61.1°. A solution of…

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Q: a) Would 1 gram of gold weigh more than 1 gram of aluminum? No. They are both one gram, so weigh the…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: If 56.5 mol of an ideal gas occupies 50.5 L at 19.00 ∘C, what is the pressure of the gas?

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Q: Using the MO theory, write electron configurations for the following species and calculate the bonds…

A: We are given 3 chemical species O2 O2+ O22+  and ask to write electronic configuration calculate…

Q: CH4, is oxidized to CO2 in the presence of O2. How much free energy is released per mole of CH4…

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Q: How to use C NMR and H NMR? And what are some other important information should I know when…

A: CNMR i.e. 13C NMR is used to detect number of non-equivalent carbon atom present in the given…

Q: 2. The following compound would be classified as an Das

A: We will identify functional group and answer the question.

Q: The Lewis structure for carbonic acid (formed when CO2 dissolves in water) is usually given as Ö:…

A: Answer: (a) Carbon nearly always makes 4 bonds and this structure has only 3 bonds. Additionally,…

Q: 4. What will be the geometry about each central atom in the following molecules? Draw a sketch of…

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Q: Which of the following pure substances has the highest normal boiling point? O H2O O CF4 O CsF O…

A: Normal Boiling point is the temperature at which vapour pressure of a substance becomes equal to the…

Q: Under anaerobic conditions, glucose is broken down in muscle tissue to form lactic acid according to…

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Q: Two functional groups in the following structure are H₂C ZI N H CH3

A: The given compound contains two functional groups------ 1) One functional group is ether. Structure…

Q: 2. 20.0 g of white crystals, which might have been either NaCl (MW = 58.0 g/mol) or sucrose (MW =…

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Q: The normality of an aqueous solution of hydrobromic acid is determined by titration with a 0.148 N…

A: Answer:- This question is answered by using the simple concept of calculation of normality of the…

Q: A. What will happen to the substance when the temperature is increased from -59 °C to -54 °C at…

A: A. What will happen to the substance when the temperature is increased from -59 °C to -54 °C at…

Q: Which of the following correctly describes the stationary and mobile phases for a reversed-phase…

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Q: Provide the synthesis for the following Br NH₂

A: Note-Since you have asked multiple questions, we will solve the first question for you. If you want…

Q: If 0.42 mg calcium fluoride, CaF2 is used as above to add fluoride to the drinking water, does CaF2…

A: Well, we will convert the mass of NaF and CaF2 to moles. And we try to dissociate both NaF and CaF2…

Q: Select all chemical species present in a solution. i Multiple answers: Multiple answers are accepted…

A: The homogeneous mixture of two or more substances is known as a solution. The solution is made from…

Q: Which of the following pure substances has the lowest melting poin ● Cs₂0 O CSCI CsBr CsI O CsF

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Q: the following acid-base reactions: hexane Complete (a) HC CH + NaH (b) The solution obtained in (a)…

A: The given problem is based on the acid-base reactions organic chemistry.

Q: Which of the following compounds has both ionic and covalent bond? (a) H2O (b) NH4Cl (c) NaCl (d)…

A: -> Ionic compounds are compounds made up of ions that form charged particles when an atom (or…

Q: The voltage generated by the zinc concentration cell described by the line notation   Zn(s) ∣∣…

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Q: Provide a complete, labeled orbital diagram for 1-fluoro-butadiene (FHC=CH-CH=CH2). Indicate all…

A: 1-fluoro-butadiene (FHC=CH-CH=CH2) is a conjugated diene where all the carbon atoms are sp2…

Q: Draw the major product for this reaction. Ignore inorganic byproducts. HgSO4, H₂O

A: Given starting compound is non terminal alkyne.  Here in this reaction non terminal alkyne react…

Q: 206Pbfor A rock contains 0.688 mg of every 1.000 mg of 238 Upresent. Assuming that no lead was…

A: We need to find the age of rock using the data provided. This question belongs to radioactive dating…

Q: Ethanol, C2H5OH, is added to gasoline to produce “gasohol”, a fuel for automobile engines. a) How…

A: Given -> Weight of CO2 = 421 gm  C2H5OH(l) +3 O2(g) ----> 2CO2(g) + 3H2O(l)

Q: Both the compounds shown below contain a carbonyl group but there is slight variation in the…

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Q: using grignard reagents, what could form the following products ? 6. ?EXG ? 6 Chemistry Steps 0 ОН…

A: -> Grignard reagent has nucleophilic character hence it can give nucleophilic addition reaction…

Q: Fe2O3 (s) + 3CO(g)→2Fe(s) + 3CO2(g) In a reaction mixture containing 181 g Fe2O3 and 65.4 g CO, CO…

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Q: It is said that Each Salt listed will 100% diccociate, and these are not 100% dissociating....

A: Incase salt from strong acid and strong base then nature of salt is neutral.Incase salt from strong…