Interpretation:
The density of CsCl should be calculated.
Concept introduction:
As the caesium has a body centred cubic (bcc) crystal structure, nine atoms are associated with a bcc unit cell. One atom is located at each of the eight corners of the cube and one at the centre. The three atoms along a diagonal through the cube are in contact. The length of the cube diagonal (the distance from the farthest upper-right corner to the nearest lower left corner) is four times the atomic radius. Also, shown below is the fact the diagonal of a cube is equal to
The right triangle must conform to the Pythagorean formula
From the Pythagorean formula, following the relationship between r and l can obtain.
From the above equation, volume ( v ) of the unit cell can be calculated as by the following equation as this is a cube.
Density ( d ) defines as the mass per unit volume.
The following relationship is used to find the mass of a unit cell.
Here,
Want to see the full answer?
Check out a sample textbook solutionChapter 12 Solutions
General Chemistry: Principles and Modern Applications (11th Edition)
- ● One mole of water weighs 18 g at 4 °C. True Falsearrow_forwardDetermine the electronegativity difference and the molecular polarity (P for polar and NP for nonpolar) of the following compounds then further classify the dominant intermolecular forces of attraction exhibited. Place HB for hydrogen bonding, LDF for London dispersion force, DD for dipole-dipole and ID for the ion-dipole bond. The first one is already done for you. 1.78 | P | hydrogen fluoride | HB 02 C2H6 NH4 H2O I2 HFarrow_forwardThe graph in Figure 5 below shows the variation in melting and boiling points for the elements in Group IV of the Periodic Table. Melting and Boiling Points of Group 4 elements 5000 |MPt (°C) |BPt C) 4000 3000 2000 1000 0+ Si Ge Sn Pb Figure 5: Diagram showing the melting and boiling points for the elements in Group IV of the Periodic Table. Figure taken from www.bing.com; accessed 19 May 2021. a) What is the general trend observed in Figure 5? b) Explain the variation in the melting and boiling points of the element in Group IV of the Periodic Table, shown in Figure 5, in terms of structure and bonding. { 11 }arrow_forward
- Explain the role of temperature in the purification process of crystalline compounds.arrow_forwardIn the Dumas method for determining the molar mass of an unknown volatile liquid, a sample of a volatile liquid that boils below 100oC is vaporized in a boiling water bath and the mass of the vapor required to fill the flask is determined. The following data was collected: Flask Volume 100.0 + 100.0 + 79.6 mL = 279.6 mL Mass of Flask + Cap 143.85 g Mass of Flask + Condensed Liquid 144.95 g Mass of Condensed Liquid 1.10 g Temperature of Water Bath (oC) 84.1 oC Barometric Pressure (atm) 0.985 atm What is the molar mass of the unknown? What will its temperature be when the pressure is 1.20 atm and the volume is 250.0 mL?arrow_forwardRank the elements or compounds in the table below in decreasing order of their boiling points. That is, choose 1 next to the substance with the highest boiling point, choose 2 next to the substance with the next highest boiling point, and so on. chemical symbol, substance chemical formula boiling point or Lewis structure A CO |(Choose one) O2 |(Choose one) ♥ В H H .. Н — О — C H. |(Choose one) v C - | H H Al, O, |(Choose one) ? :0 :arrow_forward
- A 250-g sample of hard water contains 0.20gofCa(CO3). What is the hardness of the water in parts per million (ppm)? How would the water be classified?arrow_forwardWhich should have the higher melting point, MgO or NaCl? (a) MgO (b) Naclarrow_forwardWrite the balanced equation for the rusting of iron in which iron reacts with oxygen to form iron(III) oxide. Phases are optional.arrow_forward
- 2 pt Please provide an explanation for the relatively high boiling points of H20, HF, and NH3 in comparison to the hydrogen compounds of other elements in the respective groups. 100 H2O Group 16 (6A) HF Group 17 (7A) H,Te SbH3 H,Se HI NH3 Group 15 (5A) H.S ASH5 SnH4 HCI HBr PH, GeH, -100 SiH CH Group 14 (4A) -200 1 3. 4 Period HTML Editor B IUA 工E三州 星xx 三= A 12pt Paragraph Boiling point ('C)arrow_forwardMagnesium oxide (MgO) is an inorganic compound that occurs in nature as the mineral periclase. The atomic and ionic radii 2+ = of Mg and O are RMg = 0.16 nm; RMg 0.088 nm; Ro = 0.06 nm; Ro2 = 0.18 nm. Calculate the Coulombic force of attraction between Mg2+ and 02- in Mgo. Given: q = 1.6x10-19 C; Ko = 9x10° (V.m/C). Select one: a. Fc=-1.283x10-8 N b. Fc=1.904x10-8 N c. Fc=1.283x10-8 N d. Fc=-1.904x10-8 Narrow_forwardPart A Which is the correct balanced chemical equation for the reaction of solid lithium with liquid water. Express your answer as a chemical equation. Identify all of the phases in your answer. 4Li(s) + 2H2O(1)–4LIH(aq) + O2(g) 2Li(s) + 2H2O(1)–→2LİOH(aq) +H2(g) O Li(s) + 2H2O(1)¬Li(OH)2(aq) + H2(g) O Li(s) + 2H20(1)¬LİH2(aq) + 20H (aq) O Li(s) + H2O(1)→LİOH(aq) +H+(aq)arrow_forward
- Chemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningChemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage Learning
- Chemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning