Concept explainers
Interpretation:
Two most abundant element on Earth’s crust has to be chosen from the given options.
Concept Introduction:
Element is a pure substance and it cannot be broken down into simpler pure substance by chemical means like
Elements that are laboratory synthesized are radioactive in nature and they convert back into the original naturally occurring element by emission of radiation. All the elements that occur naturally are not evenly distributed on earth and universe.
Radiations that are emitted from stars can be used to estimate the elemental composition of universe. This indicates that hydrogen and helium are mostly dominant. On Earth’s crust oxygen and silicon are the two elements that account for about
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Chapter 1 Solutions
General, Organic, and Biological Chemistry
- Free radicals are dangerous because a. they are found incorporated in any radioisotope, including those than can enter the body through the lungs as does radon b. they can be taken into the body in the food eaten if that food has been grown in radioactive soil c. they are substances that are missing some electrons and are extremely active chemically d. all of these responses are correct e. no correct responsearrow_forwardAttempt 1 What is the chemical formula for the compound formed between vanadium(III) and iodine? 13V chemical formula: Incorrect What is the chemical formula for the compound formed between vanadium(III) and sulfur? V2(SO4)3 chemical formula: Incorrectarrow_forwardWhich of the following pieces of information about an element is not found on a standard periodic table? a. chemical symbol b. atomic number c. mass number d. no correct responsearrow_forward
- A volatile liquid would A. have weak attractive forces between molecules B. evaporate "slowly" at room temperature C. have a low vapor pressure at room temperature D. more than one correct response E. no correct responsearrow_forwardWhich of the following elements is located in the d area of the periodic table? a. 20Ca b. 26Fe c. 33As d. no correct responsearrow_forwardThe following balanced equation represents a reaction between the acid HCl and solid limestone (CaCO3). What is the formula of the substance that goes in the blank?2HCl + CaCO3 → _______ + CO2 + H2O a. H2CO3 b. CaCl 2 c. Ca d. CaH 2 e. no correct responsearrow_forward
- Exercise (a) Draw the structure of compounds Q, R, T, V and Z. hame (b) State the pe of reactions for I, II, Il and IV. (c) State the observations for reactions I, III and IV. c. H,SO, 180 °C CHI,(s) CH,,0 T НС CH,COCI NaOH(a4) room T heat PCI, POCI, HCI(9) %23arrow_forwardData Table Water, H20(1) Unknown Metal (s) mass (g) 180 mass (g) 210 T, (°C) 23 T, (°C) 98 T; (°C) T, (°C) 38 38 Calculation for finding Cmetal:arrow_forwardProblem 80 of 80 Submit Curved arrows are used to illustrate the flow of electrons. Using the provided starting and product structures, draw the curved electron-pushing arrows to show the interconversion between resonance contributors for the positively charged arenium cation intermediate for the ortho- alkylation of bromobenzene. Be sure to account for all bond-breaking and bond-making steps. H :Br: 媽 HCO Select to Add Arrows H +:Br:arrow_forward
- M Tue Jan 5 atoms S1 exercise Exercise 3 B- Calcium Ca belongs to the 4" period and is found just below Mg(Z 12). 1- Find the atomic number of Ca. 2- Calculate its number of neutrons, knowing that it contains 40 nucleons. exercice 4arrow_forwardWhich of the following elements would have the same number of valence electrons as 7N? a. 6C b. 8O c. 15P d. no correct responsearrow_forward1) 3D0 Example 5: aluminum sulfate Al is +3; SO4 is -2, so the correct formula must be: Al2(SO4)3 2x(+3) + 3x(-2) =0 Again note how each of the numbers is crisscrossed, the 3 from the aluminum going to the sufate, and the 2 from the sulfate going to the aluminum. Exercise: Write the formula for each combination of ions below. OH- HCO3 PO43- Co,2- s2- Na+arrow_forward
- General, Organic, and Biological ChemistryChemistryISBN:9781285853918Author:H. Stephen StokerPublisher:Cengage LearningOrganic And Biological ChemistryChemistryISBN:9781305081079Author:STOKER, H. Stephen (howard Stephen)Publisher:Cengage Learning,General Chemistry - Standalone book (MindTap Cour...ChemistryISBN:9781305580343Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; DarrellPublisher:Cengage Learning