Iridium (Ir) has a face-centered cubic unit cell with an edge length of 383.3 pm. Calculate the density of iridium

Q: Calculation the pH of the following systematically. Make sure to include the pertinent reactions and...

A:

Q: when you mix 20ml sugar and 50ml water in a 250ml beaker, what is the volume of the sugar and water ...

A: Volume of mixture can be calculated from individuals volumes.

Q: Give the IUPAC name of the compound below.

A: The IUPAC name of the compound can be written on the basis of the main carbon chain, functional grou...

Q: Calculate the isoelectric point of aspartic acid

A: Aspartic acid is amino acid. Amino acids are the building blocks of life. Protein is made up of amin...

Q: MULTIPLE CHOICE Which of the following terms explains the release of enormous energy when a nuclear ...

A: Nuclear fission: In a nuclear fission reaction, the nucleus of an atom splits into two or more small...

Q: A waste water containing Fe(HCO3) 2 is discharged to a surface pond. Assuming complete oxidation of ...

A: Solution =

Q: Consider the following situation:  You have a 50 L tank of compressed air at 15 atm and 100 ºC.  You...

A: ANSWER : Let be consider the total moles of gas = x  As 20 % oxygen is removed Then final moles of g...

Q: Identify the type of intermolecular forces existing between the two molecules mentioned: 1. MgCl2 (1...

A: A molecule that has polar bonds will be interacting with the other molecule if it is polar. The pola...

Q: 9. A few people in your neighborhood are protesting the erection of a 5G cell tower. They claim the ...

A: Cell towers emerging now a days has a lot of health hazards associated with it due to the release of...

Q: Which ion would you expect to be smaller in size—I− or Br−? Explain.

A: Among the elements in the periodic table, the size of the elements increases as we go down the group...

Q: 1. NBS 2. он PBr3 Ether

A:

Q: The reaction CH3I + HI → CH4 + I2 was observed to have rate constants k = 3.2 L mol-1s-1 at 355 °C a...

A: Given: Rate constant at 355 oC = 3.2 M-1s-1  And rate constant at 405 oC = 23 M-1s-1.  

Q: topic: matter does each sample have a measurable mass? how do you measure the mass of each sample? ...

A:

Q: Which of the following hydrogen bonds would be the weakest? (Explain your answer) a. An N-H ... O an...

A: This question is related to hydrogen bond.  A hydrogen bond is an electrostatic interaction between ...

Q: A skeleton equation does NOT show which of the following? the physical states of the substances the ...

A:

Q: The alloy brass contains lead as an impurity in the form of lead sulphate (PbSO,). By dissolving bra...

A: Since you have asked multiple questions, we will answer only first question for you. In order to get...

Q: Rank the following alkenes in order of decreasing values of Amax- structure A structure B structure ...

A:

Q: 1. The average adult is about 55% water by mass.  How many grams of water are in a 175 pound adult? ...

A: Few questions based on dimensional analysis that is to be accomplished.

Q: A mixture initially contains A, B, and C in the following concentrations: [A] = 0.300 M , [B][= 1.10...

A:

Q: 3. Synthesis as part of your synthesis. You may use any other reagents necessary. Design a synthetic...

A: The reaction is as follows:  

Q: (a) The quantum number n describes the. * an atomic orbital and the quantum number e describes its o...

A:

Q: Prepare 250mL of a 0.75M solution of phosphoric acid from 75.0% phosphoric acid that is pure. The gr...

A: we are required to prepare 250 ml of 0.75 M of phosphoric acid from 75% phosphoric acid by using the...

Q: Ozone decomposes to form oxygen molecules and oxygen atoms, O3(g) → O2(g) + O(g), in the upper atmos...

A:

Q: Which of the following are not colligative properties? Select one: a. vapor pressure increasing b. ...

A: Colligative properties are those properties which depends on number of Solute particles and free fro...

Q: Using your experimental data for the lower molal potassium chloride solution, what is the k, of wate...

A: In a solution, certain physical properties of the solution have deviation from the physical properti...

Q: Which of the following is NOT true about "yield"? * The percent yield is the ratio of the actual yie...

A: Quantitative analysis is branch of chemistry that deals with the determination of the amount of cons...

Q: The reaction of sucrose with water is first order with respect to sucrose. The rate constant under t...

A: Given, the reaction of sucrose with water is first order with respect to sucrose. The rate constant ...

Q: 9. Gas is one of the fundamental states of matter. Which statement best explains the fact that gases...

A: There are three phases of matter. The phase of matter can be interchanged by changing the temperatur...

Q: Phosphorus pentachloride decomposes to phosphorus trichloride and chlorine gas at elevated temperatu...

A:  

Q: For each of the following reactions, indicate whether you would expect the entropy change of each of...

A: Entropy is the measure of randomness. With the decrease in intermolecular interaction, randomness in...

Q: 4. The Haber process for the synthesis of ammonia from nitrogen and hydrogen gases in an exothermic ...

A: When equilibrium is disturbed by changing condition, then system shifts towards the direction where ...

Q: The following cell has a voltage of 2.01 V. Find pk, for the weak acid. HA Si(s) | SiO2| HA (0.31 M)...

A: In the given problem, the pKa value for the weak acid HA is needed to be calculated, given that the ...

Q: Part C A carbon skeleton for cyclohexane is shown below. Where on that skeleton would the substituen...

A:

Q: formed when 0.01 mol of magnesium reac vigorously with cold water than magnesium does, forming an al...

A: Group 2 metals are:  Be Mg Ca St Ba

Q: What is the number of moles in 2L of water?

A: Given  Volume of H2O = 2L = 2000 mL We know that , Density of water = 1g/mL We also know that,   Den...

Q: 5. Among many of the drugs studied for the treatment of cancer is the carboxamide derivative Poly (A...

A: Major product.

Q: 1. Solve and choose the correct answer from the given choices: a. How many atoms of tin are found in...

A: 1. We have to calculate the number of atoms present in 3.5 moles of tin, Sn. We know that 1 mole of ...

Q: Topic : PHASE e) What is difference between the triple point and critical point explain with exampl...

A: Part e :-  Triple point :- In phase diagram it is defined as the point of particular temperature and...

Q: d) increasing the pressure in the reaction vessel e) decreasing the temperature of the system

A: For the preparation of Ammonia the haber process is scientifically used and is given by when one of ...

Q: 1. Calculate by Van der Waals' equation the pressure at which 2 moles of ammonia will occupy a volum...

A: Van der Waal's equation is, P = [RT/(Vm-b)] - [a / Vm2] Where, P = Pressure in atm R = Universal Gas...

Q: (a) Draw the curly arrow mechanism to show bonds being broken/formed (b) Comment on the polarity of...

A: (a) The curved arrow mechanism is shown below

Q: QUESTION 1 1. The concentration of an unknown weak acid solution is 0.25M, and the solution has a pH...

A: pH , Ka and concentration related detail mathematical calculation is shown below

Q: Given that the total pressure over a solution of benzene and toluene is 100.0 Torr, calculate the mo...

A: Total  pressure over a solution of benzene and toluene = 100 torr Pressure of benzene in pure state ...

Q: A reaction vessel is charged with 0.50 atm of A and 0.840 atm of B. Once the reaction reaches equili...

A: A(g) <===>2 B(g) Initial pressure of A = 0.50 atm Initial pressure of B = 0.840 atm Kp = 67.2

Q: xp # 2: suppose you have a {Zn2+(aq), Fe3+(aq)} solution, and you’re asked to separate the two ions,...

A: we have the solution containing Fe3+ and Zn2+ here Fe3+ is group III cation and Zn2+ is group IV cat...

Q: NH2 A. Absent v Pi delocalization B. Present CH hyperconjugation Lone-pair delocalization v Inductiv...

A:

Q: Methane and water react to form carbon monoxide and hydrogen, like this: CH,(2)+H,O(2) -→ CO(2)+3H,(...

A: The reaction shifts towards the side which has fewer moles or pressure.

Q: The reaction of sucrose with water in an acidic solution is C12H22011 H20 C6H1206 + C6H1206 + sucros...

A: Concentration remaining after particular time can be calculated for first order reaction using follo...

Q: Give the IUPAC name of the compound be

A:

Q: Consider the balanced reaction of magnesium and oxygen.   2Mg+O2⟶2MgO2Mg+OX2⟶2MgO   What mass, in...

A: The balanced reaction taking place is given as, => 2 Mg + O2 → 2 MgO Given: Mass of Mg taken = 1....

Crystal Lattices and Unit Cell

Consider a crystal. The regular and repeating pattern of constituent particles is the most distinguishing feature of crystalline solids. A crystal lattice is formed when these particles are replaced with representative points. The three-dimensional arrangement of constituent particles is known as a crystal lattice. Unit cell is that the smallest portion of a space lattice which when repeated in several directions, generate the whole lattice. Unit cell is a building block of a lattice. It is the smallest unit of cell.