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Q: An aqueous solution of hydrochloric acid contains 24% HCl by mass. Calculate the mole percent of HCl...

A: The concentration of any substance can be expressed in different ways such as molality, molarity, no...

Q: To prepare 100ml of 0.2M from the stock solution (10M) we need to dilute 4ml of the stock solution t...

A: Provided final volume(V2) of solution=100 ml Provided final concentration(M2) =0.2M Initial concentr...

Q: Chemistry Question

A: Reaction at the anode: At anode:2e-+I2g→2I-aq, Ecello=+0.54 V (preferred helf-reaction)O2g+4H+aq+4e-...

Q: 7) Based on the information below, determine the value of the unknown equilibrium constant, K. 2 CO2...

A: Answer:- This question is answered by using the simple concept of calculation of equilibrium constan...

Q: Calculate the heat of reaction AH for the following reaction: 2 HBr(g)→H,(g) + Br,(g) You can find a...

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Q: Use acid-base titration to determine theconcentration of:– A strong acid: HCl -0.100 M HCl Phenolpht...

A: pH = -log[H+]

Q: A bomb calorimeter has a heat capacity of 6.47 kJ/K. When a 0.107-g sample of ethylene (C2H4) was bu...

A: Heat of combustion is the heat produced when a molecule is combusted in air and produces water and c...

Q: Discuss the difference between theory and scientific law

A: Theory: The plausible explanation which is given for various kinds of phenomenon, event or behaviors...

Q: Which of the following is(are) the product(s) of the fusion reaction ²H + ³H -->?

A:   • The formation of heavier nucleus, as of helium from lighter nuclei, as of hydrogen, is known as ...

Q: Classify each of the following as either a chemical property or aphysical property:a. color b. flamm...

A: a. color b. flammability c. hardness

Q: A pure solid sample of Substance X is put into an evacuated flask. The flask is heated at a steady r...

A: Phase transitions occurs when a substance changes its state from solid to liquid, liquid to gas and ...

Q: The ΔH value for the reaction is -90.8 kJ. How much heat is released when 198.1 g Hg is reacted with...

A: Reaction involved :- 2Hg + O2 = 2HgO

Q: Write the ground-state electronic configuration for chlorine (atomic number 17), bromine (atomic num...

A: There are three rules for arrangement of electrons in orbital as follows; 1. Aufbau Principle- It st...

Q: The Oxidant in the reaction given below is Cr2072 + H* +C204-2 ( \rightarrow \) CO2 + Cr+3 +H2O O H2...

A: An oxidant is a reactant that oxidizes or removes electrons from other reactants during a redox reac...

Q: A pure solid sample of Substance X is put into an evacuated flask. The flask is heated at a steady r...

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Q: Please, I need to solve the question in less than an hour.

A: Given: Charge of the positive ion(q1) = 2+ Charge of the negative ion(q2) = 1- Distance between the ...

Q: Which volume is smaller: 1.0 L or 1.0 qt?

A: We have to find which volume is smaller i.e 1.0 L or 1.0 qt Solution = 1.0 qt is smaller volume than...

Q: Is hydrogen body covalent?

A: An ionic bond is formed by the complete transfer of electrons from one element to another. This bond...

Q: Please do number 2

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Q: For the titration of 50.00 mL of 0.300 M RbC7H5O2 (WB) with 0.200 M HNO3 (SA). Ka (HC7H5O2) = 6.3 x ...

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Q: what is the balance chemical equation, complete ionic equation, and net ionic equation for NaOH (aq)...

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Q: By what factor would the rate of a reaction increase if the temperature is increased 40oC? Remember,...

A:   Temperature Change Reaction Rate For each 10oC temperature increase.  get doubled  if the t...

Q: 5. What happens to an ionic compound such as calcium iodide (Cal,) when it dissolves in water? Inclu...

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Q: Explain how an emission spectrum is produced.

A: The lowest energy state of an atom is known as its ground state while the higher energy states are k...

Q: A solution Is prepared at 25 °C that Is Initlally 0.083M In benzolc acid (HC,H.CO,), a weak acid wit...

A: According to Henderson- Hassleblach equation pH = pKa + log[conjugate acid/acid]  

Q: Compare and contrast Bohr’s model and the quantum mechanical modelof the atom.

A: Bohr’s model and quantum mechanical model are the ideas of atomic models. At first the idea of the a...

Q: Compare and contrast the independent variable inan experiment with the dependent variable.

A: Definitions :  A dependent variable is a variable whose variations depend on another variable usual...

Q: Round each of the following numbers to three significant figures.a. 61.40 b. 6.171 c. 0.066494 d. 63...

A: To round: The following numbers to three significant figures. a. 61.40 b. 6.171 c. 0.066494  d. 63.6...

Q: 14. At equilibrium, the concentration of the reactants and the products in a reaction a. are equal b...

A: In any chemical reaction when process takes place concentration of reactant decreases with time and ...

Q: Francium-223 has a half-life of 21.80 min. i. How many nuclei are initially present in a 25.0-mg sam...

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Q: Hot air balloons are often seen in early morning or right before the end of the day when it is coole...

A: From Ideal gas equation, the density of the gas , molar mass, temperature and pressure are connected...

Q: What is the primary factor that determines whether an nucleus is stable or unstable?

A:   The nucleus is the small region that lies at the center of an atom. It is discovered in 1911 by Er...

Q: What is the specific heat capacity of a metal if it requires 269.6 J to change the temperature of 15...

A: q=ms∆T Putting these values.

Q: Chemistry Question

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and s...

Q: 5. To improve air quality and obtained a useful product, chemist often remove sulphur from coal and ...

A: Reaction Spontaneity can be checked by the sign of overall Del G reaction Value if it is negative th...

Q: what is the balance chemical equation, complete ionic equation, and net ionic equation for Na2CO3 (a...

A: Process  to write Complete and net ionic equation  1) write the Balanced equation  2) Break the aque...

Q: Why is resonance an important concept in bonding?

A: Resonance structures are the group of 2 or more Lewis structures which explains how the bonding and ...

Q: Show the direction of the dipole moment in each of the following bonds (use the electronegativities ...

A: Hello. Since your question has multiple subparts, we will solve the first three sub-parts for you. I...

Q: vodium chloride 20 tableta 5-259 and a paudtened vample titrated Cansuming 27.5 m| what is the amoUn...

A:

Q: What is the charge of the nucleus of element 89?

A: The number of protons corresponds to the charge of the nucleus since Neutrons have no net charge, it...

Q: Part 1. A chemist reacted 15.0 liters of F2 gas with NaCl in the laboratory to form Cl2 and NaF. Use...

A: Given :  Volume = 15.0 L Pressure = 1.50 atm  Temperature = 280 K R = 0.082 L.atm/mol.K Moles = ?  M...

Q: In the following reactions which products are correctly shown? Select all that are correct.

A: Let's see the products of given reactions 

Q: Ethylamine is an example of an important class of organiccompounds. The molecular formula of ethylam...

A: The Lewis structure or molecular skeleton is also known as electron dot structure. It is the complet...

Q: Discuss trapping of intermediates with at least three examples to determine chemical reaction?

A: In many chemical reactions, reaction intermediates are formed. An intermediate is a molecular entity...

Q: The molar mass of two equally sized samples of unknown gaseous compounds is shown in the table. Mola...

A: Answer:- This question is answered by using the simple concept of density of gases which is directly...

Q: Explain the role of atomic number in determining the identity of an atom.

A: Atomic number(Z) is may be defined as the number of protons present in a neutral(uncharged) atom, wh...

Q: What is chemistry?

A: Physical science The area that covers the study of natural objects, that includes, chemistry, physic...

Q: Your science teacher made a “stock solution” of fruit punch. It is 0.82M. The fun science teacher ga...

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Q: Write the two conversion factors that can be written forthe relationship between cm and in.

A: Units of measurement are defined as the fixed magnitude or quantity that can be defined and adopted ...

Q: 5 2 Label the parts of the electrolytic cell for electrolysis of PbCl2 1: 3: 6: 7: negative Anode po...

A: Electrolytic cell is a electrical setup to carry out electrolysis of given solution.