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Q: CO(g) effuses at a rate that is times that of Br,(g) under the same conditions.

A:   Where M is the Molecular mass.

Q: What is the energy of a photon from a green light with the wavelength, l (lamda) = 540 nm?          ...

A:

Q: The number 158.70 in normal scientific notation, showing proper significant figures is:

A: Given number= 158.70 In scientific notation, Decimal will be placed after first number , so  

Q: The pOH of 0.0200 M solution of Sr(OH)2 is

A: pOH is defined as the negative logarithm to the base 10 of OH- ion Concentration  pOH = -log10[OH-] ...

Q: Question 19 solution.

A: One mole of Ba(OH)2 produces 2moles of OH- ion.  Hence,  [OH-] = 2 • [Ba(OH)2] concentration  [OH-] ...

Q: A first order reaction A --> products has a rate constant of 0.120 min-1. Determine the concentra...

A: A ——> Products Rate constant (k)  = 0.120 min-1 [A0] = initial concentration = 0.500 M Final conc...

Q: 17.

A:

Q: Calculate the average atomic mass for the hypothetical element X if X has 2 naturally occurring isot...

A: When an element is present in more than one isotopic form. Then we need to calculate average atomic ...

Q: Which of the following is equal to the heat released or absorbed by a reaction at constant pressure?...

A: In this question, we have to find out the correct answer of given problem by the help of the Enthalp...

Q: A reaction A + B --> products has a rate law that is second order in A and third order overall. T...

A:

Q: ts in the followifiy ergy, select "2" next to the object With Sect kinetic nergy oving at 12.4 m/s. ...

A: Kinetic energy is given by the  1/2mv2.  

Q: NH, (g) + HCl(g) NH,CI(s) 1.87 g sample of NH, gas and a 4.87 g sample of HCl gas are mixed in a 0.5...

A: Mole= mass/molar mass Use stoichiometry of the reaction to get mass of ammonium chloride.  

Q: 2. At 450°C, the reaction below has a Keq value of 0.771. If 2.00 mol of both hydrogen and carbon di...

A:

Q: Solid ammonium chloride, NH,Cl, is formed by the reaction of gaseous ammonia, NH3, and hydrogen chlo...

A: Interpretation-  Solid ammonium chloride which forming by the reaction of gases ammonia and hydrogen...

Q: Is a strong electrolyte in aqueous solution А NH3(g) В BH3(g) C H2(g) D H2S(g) HBr(g)

A: Strong electrolyte is that electrolyte which gets completely dissociate in aqueous solution. 

Q: Bethany needs to measure out a certain amount of Cuso, for a lab experiment. The proced- ure only gi...

A:

Q: A voltaic cell is constructed with two Fe2+-Fe electrodes, where the half-reaction is               ...

A: Given that:  E° = –0.45 V [Fe2+]oxd  = 0.0088 M  [Fe2+]red = 1.23 M  T =  298 K To find: Ecell ?

Q: 6. Draw the product you would expect from the reaction of sodium butanoate with 1-chloro-4,4-dimethy...

A: The given reaction between sodium butanoate with 1-chloro-4,4-dimethylpentane.

Q: Chemistry Question

A: The average kinetic energy of the gas molecules ∝ Absolute temperature of the gas The formula of Ave...

Q: What volume in liters would 20.0 moles of sulfur dioxide occupy at 75.3 °C with a pressure of 4.96 a...

A:

Q: a buffer solution consisting of 0.15 moles of ammonia dissolved in half a liter of water. how much a...

A: A buffer solution s composed of the weak acid and its conjugate base or weak base and conjugate base...

Q: Question 4 What is the mass of 0.10 mole of methane (CH,)? A 0.10 gram 1.00 gram 1.60 grams 16.00 gr...

A:

Q: Consider the following reaction.  CH4 + 2O2 -> 2H2O + CO2      ΔH = -890 kJ/mol If 305 kJ of ener...

A: Given reaction is CH4 + 2O2 —> 2H2O + CO2      ΔH = -890 kJ/mol 2 mol H2O produced releases 890 k...

Q: What mass of methane (CH4) combusts if 333 kJ of energy is released? Normally, 890 kJ of energy is r...

A: Applying mole concept.

Q: Give the major organic product(s) for each of the following reactions. Topic is reactions of alkynes...

A: According to our policy we should solve one question (if any subparts presentthenwe solve first thre...

Q: Help finding the molar it's in rounded and unfounded with the following information.

A: Molarity = 1000 x W/MM x V Where, MM = molar mass of solute; V = volume of solution in mL W = mass o...

Q: balancing and Identifying Chemical Reactions

A: In this question, we have to find out the correct answer of given problem by the help of "Balancing ...

Q: Adding helium to a balloon increased its volume from 435.7 mL to 4.277 L. If the final number of mol...

A: Avogadro's law states that "equal volumes of all gases, at the same temperature and pressure, have t...

Q: A 4.0 g sample of a substance was heated from 0oC to 20oC. It absorbed 35.2 J of energy as heat. Wha...

A:

Q: For the following equilibrium reaction: NaOH(Aq) + HCl(aq) HOH(aq) + NaCl(aq) + Δ What happens if y...

A: When KCl salt added in Equilibrium Reaction then Equilibrium Reaction shifted towards backward direa...

Q: What is the wavelength in nanometers (nm) of a photon that has an energy of 3.0 x 10-19 J ?         ...

A: Energy of photon is given by Planck formula, E = h c / (lambda) where,  h = Planck constant c = spee...

Q: The specific heat for aluminum is 0.900 J/goC. What is the amount of heat needed to raise the temper...

A: Heat flow from high temperature to low temperature.  

Q: 1. Pressure drops with altitude, and in fact Denver has an atmospheric pressure of 83.3 kPa, compare...

A: 1. As altitude increases atmospheric pressure will decreases.  The atmospheric pressure of Denver is...

Q: Refer to three gases in identical rigid containers under the conditions given in the table below. Co...

A: Given, here the pressure temperature for methane, ethane and butane gasas in the table in container ...

Q: Which reactant will give the products shown below when subjected to acid hydrolysis?

A: Hydrolysis of cyclic ketal results in the formation of corresponding ketone and a specific diol.

Q: How is iupac name? c) H-C-OH

A:

Q: The diagram below depicts a lithium atom with three protons and four electrons. Explain what must ha...

A: A neutral atom is one which contains equal number of electrons and protons. Here we have a lithium a...

Q: Which of the following acids would produce a carboxylate ion with a minus one charge?

A:

Q: What is Nuclear magnetic resonance?

A: Nuclear magnetic resonance is also know as NMR. In this , we determine the chemical shift value of 1...

Q: What is the pH of the buffer that results when 3,06 g of NagHPO, and 2.17 g of NaH,PO, are diluted w...

A: Mass of Na2HPO4 = 3.06 g Mass of NaH2PO4 = 2.17 g Volume of buffer solution = 0.3 L Ka of H2PO4- = 6...

Q: The E°cell for the cell using the overall cell reaction below is +0.53 V:                     Zn(s) ...

A: Given cell reaction is, Zn(s) + Ni2+(aq) ----> Zn2+(aq) + Ni(s) Cell representation, Zn(s)|Zn2+(a...

Q: Does a double replacement reaction requires that a precipitate be formed or a gas be produced?

A: A double displacement reaction is the reaction between two ionic compounds dissolved in water. The t...

Q: Answer all three parts plz. You are starting with three aryl bromides. They undergo a typical grigna...

A: The questions are based on the concept of organic reactions. we have to make grignard reagent  &...

Q: Calculate the energy of a photon of electromagnetic radiation at each of the following frequencies. ...

A:

Q: Question 7 How much volume is occupied by one mole of a gas at STP? 10.6 L 15.5 L 22.4 L 25.2 L

A: The expression for ideal gas equal, PV = nRT  Where  P = Pressure V= Volume  n = Mole  R = Universal...

Q: Using data from Appendix D in the textbook, calculate [OH−] and Ph for each of the following solutio...

A: Given data : Concentration of NaBrO = 0.10 MOH-=6.3×10-4 The ICE table for the process is :         ...

Q: Consider the following reaction.  N2 + 3 H2 -> 2 NH3        ΔH = -92 kJ/mol How many grams of nit...

A: When ∆H is negative then heat is release. To get answer we will use unitary methods. Mole= mass/mola...

Q: Write the formula of the acid and base that need to be reacted to produce the salt: AlCl3

A: Al(OH)3 is the base and HCl is the acid to form AlCl3 as salt.

Q: For magnesium hydroxide, Mg(OH)2 , Ksp = 2.67x10-13 at a certain temperature. Calculate the molar so...

A:

Q: nich of the follov (choose smectite vermiculite humus

A: Colloids are the example of a mixture that contains microscopically small insoluble particles disper...