15. What are the starting materials for the following products? a) Br b) Ni H2 OH H*

Q: The equilibrium-constant expression for a reaction is Kc = What is K. If the reaction is halved (i.e...

A: What affects the Kc after multiply by half ?

Q: If 6.63 × 10−6 mol of a compound has a mass of 2.151 mg, what is the molar mass of the compound?

A: Number of moles is calculated by dividing the given mass with molecular mass.

Q: Calculate the molar concentration of ethanol, C2H5OH, in an aqueous solution that contains 3.40 g of...

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

Q: How many moles of each element are present in 2.67 mol of each compound? HCl H2SO4 Al(NO3)3 Ga2(SO4...

A: Given HCl ,H2SO4 ,Ga2(SO4)3.    ,Al(NO3)3

Q: bond enthalpy fc

A:

Q: Which one of the following exhibits dipole-dipole attraction between molecules? BI3 OF2 XeCl4 CH4 SB...

A:

Q: An unknown compound containing tellurium and bromine is analyzed and it is determined that 28.53% of...

A: Given data : Mass % of tellurium = 28.53%

Q: For the reaction below, which species is being reduced? H26) + Cl2@ → 2 HCl@) O H216) Cl216) O HCle

A: To understand  reducing agent ,we have to understand  following  terms . oxidation = Addition of oxy...

Q: Which of the following best represent the energy diagram of the iodine clock reaction 103 (aq) + HSO...

A: The given iodine clock reaction involve three steps.  The first step of the reaction is a slow step ...

Q: What ratio of CH₃NH₂ to CH₃NH₃⁺ is needed to prepare a pH 10.10 buffer? (Kb for CH₃NH₂ is 4.4 × 10⁻⁴...

A: Given :-  pH of buffer = 10.10/ Kb for CH₃NH₂ = 4.4 × 10⁻⁴  To calculate :-  ratio of CH₃NH₂ to CH₃N...

Q: The relationship between pressure (in kPa), temperature(inKelvin), and the specific volume (in- m³/k...

A: R is universal gas constant =0.518 kj/kg.k T is absolute temperature (k) P is absolute pressure (kpa...

Q: List the seven types of colloids that are based on phase. Use the paperclip button below to attach f...

A: A colloid is a homogeneous system that consists of two phases - dispersed phase and dispersion mediu...

Q: Which of the following answer choices explains how Lewis-Dot structures are used in Chemistry? O Lew...

A: Here, we have to find the statement that explains how the Lewis-Dot structures are used in Chemistry...

Q: Compare and Contrast any two microscopy techniques.

A: There are three main types of microscopy: Optical microscopy Single molecule microscopy Stimulated ...

Q: One of the components of smog is ozone,O3, a colorless, toxic gas. It is a very strong oxidizing age...

A:

Q: Which of the following is/are true regarding catalysis O a. The rate constant remains the same O . n...

A: Catalysts  These are the chemical compounds that increase the rate of a reaction by lowering the act...

Q: Formula Total # Valence Electrons Plausible Lewis Structure HCI SIH4 PH3 Оз SO3 H2S HCN CO2

A:

Q: In this particular problem, draw all possible resonance structures on your notebook. Based on your s...

A:

Q: Decide whether each molecule or polyatomic ion is polar or nonpolar. If the molecule or polyatomic i...

A: Polar molecules have nonzero dipole moment and non polar molecules are the molecules having zero dip...

Q: For a particular reaction, AH° = -28.4 kJ and AS = -87.9 J/K. Assuming these values change very litt...

A: Given,  ∆H° = - 24 kJ = - 2400 J  ∆S° = - 87.9 J/K

Q: Fill in the missing chemical formulae in the tables below. acid conjugate base base conjugate acid H...

A:

Q: Fill in the blank: For irreversible SECOND-order Bimolecular type reactions, the plot of 1/Ca or Xa/...

A: In a chemical reaction, the conversion of reactants to product takes place based on the interaction ...

Q: Select True or False: Under the conditions of high temperatures only, the reaction O2(g) → 20(g) wou...

A: According to the second law of thermodynamics, the spontaneous nature of the reaction is determined ...

Q: For a particular reaction, AH = -14.20 kJ and AS = -198.5 J/K. Calculate AG for this reaction at 298...

A:

Q: Draw the orbital diagram for the valence electron configuration of the element Strontium (Sr)

A:

Q: At altitudes much greater than 30 km, photochemical decomposition of dinitrogen produces the ground-...

A:

Q: A 1.50 kg solution of NaOCl (aq) contains 2.98 mass percent of NaOCl. Calculate the mass of NaOCl in...

A: Given, mass of NaOCl solution = 1.50 Kg = 1.50 × 1000 g = 1500 g Mass percent of NaOCl = 2.98 % Mass...

Q: A 60.00 mL of buffered solution (pH 10) containing Zn2* and Ni2* ions (from a chip sample) is analyz...

A: Metal ion combine with EDTA in 1 : 1 mole ratio. So we would calculate moles of both metal ions usin...

Q: Analyze the HNMR spectrum below: 10 8 7 4 3 1 -1 ppm

A: The structure of the following is:  

Q: 4. Draw a particulate (molecular level) representation of the solution mixture in the question above...

A: The molecular level representation of a solution of weak acid in water is needed to be drawn given t...

Q: DRAW THE FOLLOWING COMPOUND:  Lactulose: galactose(β1 -> 4)fructose

A: Lactulose is a disaccharide formed from β-galactose and fructose.

Q: chemist dissolves 312. mg of pure sodium hydroxide in enough water to make up 170. mL of solution. C...

A:

Q: Determine the empirical formula of the follow 1. 31.8% K, 29.0% CI, 39.2% O 2. 6.44g N, 14.72g O 3. ...

A: ANSWER : Given data's are : 1. 31.8 % K , 29.0 % Cl , 39.2 % O 2. 6.44 g N, 14.72 g O 3. 26.1 % K , ...

Q: What is the electron configuration of K? 1s 2s 2p°3s²3p°4s²3d°4p° 1s 2s 2p°3s²3p° O 1s22s 2p®3s?3p 4...

A: Atomic mass of potassium is 19

Q: Lets pretend for a moment that you’re now working as an analyst working for the police department. Y...

A: Test for sodium chloride.

Q: Calculate the pH of a 0.424 M aqueous solution of hydrocyanic acid (HCN, Ka = 4.0×10-10).

A: pH of the solution can be calculated by using the formula,  pH = [H+]. Given data, Concentration of ...

Q: please explain What percentage of a side-chain sulfhydryl group of cysteine is protonated at pH 7.9...

A: Given data :- Given compound is cysreine pH of the compound = 7.9

Q: Correct Part C Write a balanced redox reaction showing what happens when Pb dissolves. Express your ...

A: The solution is as follows:

Q: What is the p-value of Ca^2+ ion in a solution that is 2.30 x 10^-4 M CaBr2 and 3.90 x 10^-4 M Ca(OH...

A: Answer: p-value is actually equal to the negative of logarithm of molar concentration of respective ...

Q: Write the expanded/complete ground state electron configuration of the element Strontium (Sr)

A:

Q: What type of reaction it is and balance the equation: K.LiOH I.Mg+O2

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

Q: A serving of a certain yogurt contains 6 g of protein, 21 g carbs, and 4 g of fat. How many Calories...

A:

Q: Selected bond dissociation enthalpies are given in this table. Polyvinyl chloride (PVC) is one of th...

A:

Q: If 246,000 J of energy are required to raise 10 kg of sodium from 15°C to 35°C, what is the specific...

A: Given :-  q = 246000 J  Mass of sodium (m) = 10 kg  Initial temperature = 15°C  Final temperature = ...

Q: The remaining questions are focused on Le Chatelier's Principle and refer to the following balanced ...

A: According to Le Chatelier's principle if a system in equilibrium is subjected to any external change...

Q: 6.11 Ar-meson with a kinetic energy of 140 MeV decays in flight into u-meson and a neutrino. Calcula...

A:

Q: Identify the type of reaction and balance the equation: G. F2+NaCl H. Fe2O3

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

Q: Which of the following is NOT characteristic of a quality restorative wax? a. The ability to acccep...

A: loss of shape & form under varying temp is the right answer.

Q: Identify the 4 quantum numbers of the 17th electron of Strontium

A: Identify the 4 quantum numbers of the 17th electron of Strontium

Q: introduced into an evacuated S00. m flask at 518°C the half-life for the e CH4 + CO, is 410 s. Whrat...

A: Given data : Initial pressure [P0] = 364 mmHg HHalf life (t1/2) = 410 s Time (t) = 1.00 hour = 3600 ...

Alkynes

Alkynes are organic compounds that contain at least one triple bond between carbon-carbon atoms. They are a series of unsaturated compounds with a general molecular formula, CnH2n-2.