1. 2.

Q: The pH of an aqueous solution of 0.144 M ammonium perchlorate, NH4ClO4 (aq), is . This solution is

A:

Q: Explain the mechanism of analysis of sulfate gravimetrically in [Cu(NH3)4]SO4.H2O complex and determ...

A: We have to calculate theoretical yield of SO4-2 ion.

Q: What is Leucippus contribution atomic theory?

A: Matter can be defined as any substance that has some mass and occupy space. Matter can be solid, liq...

Q: Select the MOST polar bond among the following. Group of answer choices P—Br P—Se P—S P—Cl

A: Given,  In P—Br P—Se P—S P—Cl  The most polar bond in above is:

Q: the oxidation number of oxygen for each compound in the following reaction: 2H2O2(aq)→ 2H2O(l)+O2(g...

A: 2H2O2(aq) --> 2H2O(l) + O2(g)  

Q: Part A Calculate A,G° for a redox reaction with n = 2 that has an equilibrium constant of K = 24 (at...

A: The Gibbs free energy change and the equilibrium constant are related as follows: Where, ∆rGo = cha...

Q: Why do you think that the surrounding temperature of ice cubes is cold and has condensation? What pr...

A: The surrounding temperature of ice cubes is cold.

Q: The pH of a 0.0492 M solution of a weak acid is 2.641. What is the Ka of the acid?

A: pH= 2.641

Q: 13)Circle which reactant molecule (in each set) would give the largest (most exothermic) heat of hyd...

A:

Q: Two students are tasked with determining the milligrams of chloride in a simulated soil sample. Both...

A: Two questions based on concentration terms that are to be accomplished.

Q: Identify the relationship between the following compounds. CH CH CH O constitutional isomers O stere...

A: Note : Since you have posted multiple questions, we are entitled to answer the first only. Please re...

Q: What is Hantaro Nagaoka contribution atomic theory?

A: Atom is the smallest particle which can not be further divided in to any other tiny particle.

Q: A 50.0ml flask contains 0.0255 g methane (CH4) gas at 22.5•C what is the pressure in the flask?

A: Given mass of methane = 0.0255 gram Temperature of gas = 22.5 ℃ = (273.15 + 22.5) K = 295.65 K Volum...

Q: Given the following chemical equation and rate law: CH3CHO(g) → CH4(g) + CO(g) Rate = k[CH3CHO]? Wha...

A: For the given chemical reaction., CH3CHO(g) ---> CH4(g) + CO(g) Rate for the reaction = k[CH3CHO]...

Q: When dinitrogen pentoxide, N2O5, a white solid, is heated, it decomposes to nitrogen dioxide and oxy...

A:

Q: Answer: 7. The level of ethyl acetate is determined in colchicines by headspace gas chromatography. ...

A: In the given problem the head space gas chromatography technique is used to determine the amount of ...

Q: When 146.0 mL of water at 26.0°C is mixed with 41.0 mL of water at 85.0°C, what e fina temperature? ...

A: given :-  Volume of water at 26.0°C = 146.0 mL  volume of water at 85.0°C = 41.0 mL  To calculate :-...

Q: oxygen atoms

A:

Q: What is Henri Becquerel contribution to the atomic theory? Explain in detail.

A: Answer - discovery of radioactivity in uranium by French physicist Henri Becquerel in 1896 forced sc...

Q: A chemist prepares a solution of iron(II) chloride (FeCl,) by measuring out 0.25 g of FeCl, into a 2...

A:

Q: A weak acid, HA, has a pK, of 4.047. If a solution of this acid has a pH of 4.313, what percentage o...

A:

Q: What is the frequency of light (in THz) for a photon with a wavelength of 707.0 nm? (Remember that 1...

A: Given data : Wavelength (λ) = 707.0 nm Frequency (v) =? 

Q: If the [H3O+] is 4.95 x 10–12 M, what is the pH?

A: Given :-  [H3O+] =  4.95 x 10–12 M  To calculate :- pH of solution  

Q: Q29) Match the following chemical terms to the descriptions: C Effervescent I Aliquot O Catalyst D E...

A: 1.  small portion (of a reaction) - mother liquor  2. The substance dissolved in a solvent- solute  ...

Q: Which of the following bases would you not use to deprotonate 1- pentyne? B H3C H3C CH2 lithium n-bu...

A: Terminal Alkyne has acidic hydrogen which can be removed by using strong base.  

Q: This is the chemical formula for nickel tetracarbonyl (a powerfully poisonous liquid used in nickel ...

A: Given :- chemical formula of nickel tetracarbonyl = Ni(CO)4  No.of.moles of C in sample = 47. mol  T...

Q: 1. How many moles are in 0.634 Eq of CO32–  a. 0.634 mole b. 1.27 moles c. 2 moles d. 0.317 mole

A: Given-    number of Equivalent= 0.634

Q: COC2(g) = CO(g) + Cl2(g)- Submit Request Answer You may want to reference (Pages 665 - 672) Section ...

A: COCl2 (g) --> CO(g) + Cl2(g)

Q: Determine the volume in mL of 0.181 M HCl(aq) needed to reach the equivalence (stoichiometric) point...

A:

Q: Current Attempt in Progress Calculate the number of moles of each of the ions in the following solut...

A: Volume = 26.6 ml = 0.0266 L Molarity = 0.157 M

Q: How many molecules of hydrogen chloride gas could theoretically be produced at STP by reacting 34.7 ...

A: In balanced chemical equation number of atoms of each species are equal on both reactant and product...

Q: pH

A:

Q: Which indication of relative acid strengths is incorrect? a) H2SO3>HNO3 b) H2SO4>H2SO3 c) HClO2>H...

A: Here we have to find out the order of acidity.

Q: Measurements show that unknown compound X has the following composition: element mass % calcium 38.7...

A: Write the empirical formula of X....

Q: Express your answer using two significant figures. A, a weak acid, with Ka = 1.0 x 10-8, also forms ...

A:

Q: avww To Use the References to access important values i neded for this question. When the following ...

A: Balanced chemical equation are those in which number of atoms on left hand side and right hand side ...

Q: Which of the following has the highest intensity of mass fragment peak in its mass spectrum? Select ...

A: more the stability of the fragment, more the intensity of the mass fragment peak in the mass spectru...

Q: MULTIPLE CHOICE Question 18 Which scenario best describes the long-term health effect of air polluti...

A: Here, we have to find the best scenario that describes the long-term health effect of air pollution ...

Q: (7pts) The rate law for the reaction 3A C is Rate = 0.951 M' hr1 [A]? What is the half-life for the ...

A:

Q: = 0.400 M, B] = 1.00 M , and [C] = 0.300 A mixture initially contains A, B, and C in the following c...

A:

Q: 4) Choose how many “occupied MOs" can occur for the conjugated n-system of B-carotene and LED compou...

A: These type of questions are based on pericyclic reactions let us discuss one by one.

Q: 1.2-/1,4-product & 1,3-product formations CF3 heat OMe heat heat CN

A:

Q: A scientist notices an occurrence of acid shock in a body of water that sits close to an industrial ...

A: Correct option is (C) explanation is given below

Q: 1. Draw the product(s) of the following reactions. Include stereochemistry when relevant. a OH H*/H2...

A:

Q: 2b) I dentify the nucleophillie carben atoms by drawing their formal charges. aiom bearng ane or mor...

A: In this molecule all the carbon atoms doesn't contain any formal negative charge. Therefore there is...

Q: Which statement best explains why acid precipitation formation would increase in a given time period...

A: Please find the below attachment.

Q: 64584@q.164 e. What is the approximate molar mass of the metal? (Use Eq. 4.) joules/g C g/mol

A:

Q: OMe Li OMe NME2 NME2 Li .COOH 1. CO2 C 2. H20

A: In Organo lithium compound ( R-Li), the alkyl group act as a nucleophile.  The nucleophilic substitu...

Q: A 25.0ml flask contains methane (CH4) gas at 22.5•C the pressure in the flask is 225.2 mmHg. How man...

A: Volume of flask (V) = 25.0 ml = 0. 0250 L Temperature (T)  = 22.5 °C = 273.15 + 22.5 K = 295.65 K Pr...

Q: Why is methanol chosen as the solvent for recrystallization? What would happen if the student uses d...

A: The above reaction is Electophilic substitution aromatic reaction. Which is known as Fridelcraft alk...

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.