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Chapter 1 Solutions
PRINCIPLES OF MODERN CHEMISTRY-OWLV2
- The density of aluminum is 2.7 g/cm3; that of silicon is 2.3 g/cm3. Explain why Si has the lower density even though it has heavier atoms.arrow_forward13arrow_forwardデジタル形式で段階的に解決 ありがとう!! SOLVE STEP BY STEP IN DIGITAL FORMAT Structure of Metal Materials: 8. A colleague calculated the density of iron with BCC structure using the following data of atomic radius equal to 1.24 Angstrom and atomic weight of 55.85 as follows: p = [(4 atoms / C. U.) x (55.85 g/atomic weight)/(atoms/atomic weight) / [2(1.24x108 cm)/√2]³ p = 68.8 g/cm³ Is the result obtained logical? Explain and justify your answer.arrow_forward
- Gold has 79 electrons per atom and an atomic mass of 197 u. Part A What is the total charge of all the electrons in 3.1-kg bar of gold? Express your answer to two significant figures and include the appropriate units. µA a xa х.10п b Qtotal = Value Units Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Check your signs. Part B What is the net charge of the bar? Express your answer with the appropriate units. Qnet = Value Units Submit Request Answerarrow_forwardFor I = 3, which is not a possible value of L₂? 00 O None of the given choices. ○ 3ħ oħi ○ 2ħarrow_forwardAn average human weighs about 650 N For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of Force between two point charges. ▼ Part A If two such generic humans each carried 1.5 C coulomb of excess charge, one positive and one negative, how far apart would they have to be for the electric attraction between them to equal their 650 N weight? Express your answer in kilometers. ΠΡΑΣΦ T= Submit Request Answer Constants kmarrow_forward
- Please help me with this question! What would be the correct answers?arrow_forwardPlease help me with this question! What are the correct answers? (The two I have chosen are incorrect)arrow_forward5.6 x 1012 is ... * Small than 1 O Larger than 1 60,900,000 is equal to * 6.9 x 10° 6.09 x 106 O 6.09 x 107 O 6.9 x 107arrow_forward
- 11:15 .l .l 5.00 KB/S A O (12 4 app.teachermade.com/fill/13c37t (4) C Q Q T TI 4 v Save for Later I'm Done A. John Dalton was an English chemist. His Dalton's Atomic Theory ideas form the atomic theory of matter. Here are his ideas. • All elements are composed (made up) of atoms. It is impossible to divide or destroy an atom. • All atoms of the same elements are alike. (One Atoms of element X Atoms of ement Y Compound of elemeite XandY atom of oxygenis like another atom of oxygen.) • Atoms of different elements are different. (An atom of oxygen is different from an atom of hydrogen.) • Atoms of different elements combine to form a compound. These atoms have to be in definite whole number ratios. For example, water is a compound made up of 2 atoms of 1. What is the name of John Dalton's theory? 2. What are elements made of? 3. An atom of hydrogen and an atom of carbon are 4. What are compounds made of? 5. The ratio of atoms in HCI is: Atomic Structure J. J. Thomson was an English…arrow_forwardWrite balanced complete ionic equation for CaS(aq) +CdCl2 (aq) → CdS(s) + CaCl (aq). Express your answer as a chemical equation. Identify all of the phases in your answer. ΑΣφ You have already submitted thinarrow_forwardWhich of the following is the correct ?expression for the total number of nodes |- 1 n+ 1 |+1 O n-1 Oarrow_forward
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