i start with 21.60 g of nitrogen. After reacting it yields 1.3 ammonia. What is the percent yield of my reaction?  N2 + 3H2 -> 2NH3

Q: choose all Off. the following that will result in a decreasing in entropy off the system; melting of...

A: freezing Off  water.

Q: What is the conjugate base of HCO3? O H2CO3 None of these O coz? O HCoz O HCO2

A: The conjugate base of a substance is formed when the hydrogen ion is lost from an acid. 

Q: Balance the following chemical equation (if necessary): C:H«(g) + O2(g) –→ CO:(g) + H2O(g)

A: Balanced equation means number of atom in reactant side is equal to number of atom in product side. ...

Q: A sample of hydrogen gas at a pressure of 751 mm Hg and a temperature of 76 degrees Celsius, occupie...

A:

Q: For the first order reaction below, the initial concentration of A is .78 M. What is the rate consta...

A: The question is based on the concept of chemical kinetics. we have determined the rate constant. we ...

Q: How many mmHg is 104.4 kPa? (Numbers only, answer to one decimal place)

A: Pressure = 104.4 kPa We need to find pressure in mm Hg

Q: Which of the following statements is wrong? A. Rb has the largest atomic radius among Li, Na, K, an...

A: Answer: option B is correct option as Mg2+ has the largest ionic radius among N3-, O2-, F-, Na+ and ...

Q: The rate at which a certain drug is eliminated by the body follows first-order kinetics, with a half...

A: Given data First order kinetics  Half life = 77 min. Initial concentration = 0.34 ug/mL time (t) = 1...

Q: A radioactive isotope, X-90, has a half-life of 82.6 years. How many years (y) will it take for 34 ...

A:

Q: The solubility of BaCO3 in water at 25C is 4.0x10^-5 mol/L. Calculate the value of Ksp for BaCO3 at ...

A: Given data,  Solubility of BaCO3 in water = 4.0 × 10-5 mol/L 

Q: A cubic object has a side length of 3.17 cm.  It is found to be a pure substance with a mass of 41.1...

A: Density of the substance can be determined by using the formula given below as;                     ...

Q: True or false Please answer a,b,c

A: Here I have explained all the three equations along with the structure

Q: 27. Which of the following is a tertiary alkyl group? a. CH;CH2CH2CH2-- b. CH3CH2CH2C(CH3)2-- c. CH3...

A:

Q: Develop the following reaction mechanisms:

A: A.

Q: Why is the pH at the equivalence point greater than 7 when you titrate a weak acid with a strong bas...

A: Answer:- this question is answered by using the simple concept of chemical reaction of weak acid and...

Q: Propose an efficient synthesis for the following transformation: ОН

A: In the above synthesis But-1-ene is converted to pentan-3-ol.  The above reaction proceed through th...

Q: Of the following, which is the strongest acid? All the acids have the same strength. HIO4 ...

A: The answer to the following question is-

Q: Suppose two 45-g ice cubes are added to a glass containing 500 cm3 of cola at 20,0°C.When thermal eq...

A:

Q: An algal bloom has a biomass of 5.0 mg/L. Assuming the algae remains suspended in the water column, ...

A: An algae bloom has a biomass of 5mg/L. So, Xo = 5 mg/L We have to determine how much algae will rema...

Q: Solve all

A:

Q: What is STP ? O Temperature 273 K and 760 mm Hg O Temperature 13.3 psi and 1 Torr O Temperature 273 ...

A: STP means standard Temperature and Pressure are standard state of conditions for experimental measu...

Q: REAGENTSMetallic copper, Concentrated nitric acid, NaOH concentration 6M (25%), Sulfuric acid concen...

A: Answer:- This question is answered by using the simple concept of chemical reaction of copper with c...

Q: A flask containing helium gas is connected to an open-ended mercury manometer. The open end is expos...

A: Given Atmospheric pressure (Patm ) = 743 torr

Q: Write Down the major and minor products in the following reaction Br AICI, Major product Minor produ...

A: The reaction is the Electrophilic substitution reaction (ESR) of benzene. In this reaction in presen...

Q: 7. Hydrogen gas is being considered as a possible future fuel. It will combust in air to produce wat...

A: Overall reaction is obtained by adding all the steps of given mechanism.  Rate law is determined by ...

Q: Calculate the molarity of the HCl using 25.00 mL of HCl solution and the volume of the 0.3000 M NaOH...

A:

Q: Consider ethylene (C2H4)  a) write a balanced chemical equation for the combustion of 1 mole of ethy...

A: Since you have posted multiple subparts, we'll answer the first three subparts. 

Q: 2. Which of the following substrates can undergo Diels-Alder reaction? II III VI V a) I, II, III b) ...

A: The answer is given as follows 

Q: QUESTION 33 When forming ionic compounds, metalic elements typicaly electrons to form gain, cations ...

A: (33)  Correct answer is : lose ; cations. When forming ionic compounds, metallic elements typically ...

Q: 16. Based upon the following mass spectral data, what is the correct formula of the compound that ge...

A: A mass spectrum is an intensity vs. m/z plot of positively charged molecular ion and fragment ions f...

Q: NaOh is basic, Al(OH2)(OH)3 is amphoteric and O3ClOH is acidic. Considering that they all contain on...

A: Base are those substances which furnish Hydroxide ion when dissolved in water. Amphoteric are those ...

Q: Solve alll please

A: Hydroboration–oxidation reaction: The hydroboration–oxidation reaction is a stereospecific two-step ...

Q: Ideal Gas Law If I have a 50 liter container that holds 45 moles of gas at a temperature of 200° C, ...

A: V = 50 L  n = 45 moles  T = 200°C = 473 K  R = 0.0821 L.atm/mol.K  P = ?

Q: 75. Draw structure for (S,E)-4,5-dimethyl-4-hepten-3-ol:

A:

Q: What is the hybridization of the carbon atom in H2NCHO? a) sp b) sp? c) sp d) sp'd e) sp'd? f) p g) ...

A: We have H2NCHO open structure of this molecule is shown in figure:

Q: I don't see how this is stable

A: Gauche Butane Interaction It is a type of steric hindrance due to spatial arrangement of methyl grou...

Q: Chemistry Question

A: (1)From the balance chemical reaction, it can be seen that a gaseous bromine is converted to liquid ...

Q: 38. What is the best reagent to achieve following transformation? OMe CN OMe CN conditions HO, NME2 ...

A: c) NaBH4

Q: One of the commercial uses of sulfuric acid is the production of calcium sulfate and phosphoric acid...

A: Given Mass of H2SO4 reacted = 54.3 g Mass of Ca3(PO4)2 reacted = 19.9 g Theoretical yield of H3PO4 =...

Q: True or False The Gibbs Duhem equation determines the chemical potential at different phases of pure...

A: Gibbs Duhem equation is written as Σ niµi = 0. ( for ith component)where ni is the no. of moles of t...

Q: Alcohols Reactions Note: Pyridine

A: ->Tosyl chloride used for making alcohol as leaving group. -> Then there occur SN2 reaction in...

Q: 5. A piece of copper metal of mass 6.5 kg is heated from 20.5ºC to 324.3°C. Calculate the heat absor...

A: The amount of heat absorbed by the piece of metal can be calculated as follows:

Q: For the first order reaction below the initial concentration of A is 0.78 M. What is the rate consta...

A:

Q: rank the following chemicals from strongest (1) to weakest (5) reducing agents. Cl2 Fe2+ ...

A: The reducing agents are those which can leave an electron easily getting oxidized and thus reducing ...

Q: Classify the following compounds as hemiketal, hemiacetal, ketal, acetal, and hydrate.

A: Answer 

Q: 15. Draw te praluctes of this reaction- If Hee se mapr endaminx proluct. labl hem as Such. A flere i...

A: Applying concept of substitution reaction on alkyl halide by KOH.

Q: Please answer the last three question (c, d and e). The answers are: (c) 3.63 × 10^9 events (d) 115 ...

A:

Q: Based on the information below:   HX(aq)+Y1-(aq)<==>HY(aq)+X1-(aq)Keq>1   Which of the foll...

A: Applying concept of keq  variation with pka value.

Q: Please answer all parts!

A: Given :  Initial [PCl5] = 3.00 M  At equilibrium :  [PCl3] = [Cl2] = 1.80 M 

Q: QUESTION 17 The Kp for the following reaction is 0.035 at 387 °C, what is Ke? PCI (g) PCI (g) + Cl,(...

A: Given that the equation is  PCl5 -----> PCl3 + Cl2  Kp = 0.035