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Compute the relative molecular masses of the following compounds on the
(a)
(c)
(e)
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- Give the name and formula of the compound formed from the following elements:(a) 12L and 9M (b) 30L and 16M (c) 17L and 38Marrow_forwardalculate (to the nearest 0.1 u) the formula mass of these compounds. (a) rubidium nitrate, RbNO3 u(b) carbon tetrachloride, CCl4 u(c) boron trifluoride, BF3 u Calculate (to the nearest 0.1 u) the formula mass of these compounds. (a) azithromycin, C38H72N2O12 u(b) saccharin, C7H5NO3S u(c) glucose, C6H12O6 uarrow_forwardA compound Y containing carbon, hydrogen and oxygen only have the following composition by mass:C: 40.0% ; H: 6.7% ; O: 53.3%(a) Calculate the empirical formula of the compound. (Relative atomic masses: H =1.0, C = 12.0, O = 16.0) (b) Given that the relative molecular mass of compound Y is 180. Find its molecular formula.arrow_forward
- Calculate (to the nearest 0.1 u) the formula mass of these compounds. (a) acetaminophen, C8H9NO2 u(b) aspirin, C9H8O4 u(c) ibuprofen, C13H18O2 uarrow_forwardGive the number of atoms of the specified element in a formula unit of each of the following compounds, and calculate the molecular (formula) mass:(a) Hydrogen in ammonium benzoate, C6H5COONH4(b) Nitrogen in hydrazinium sulfate, N2H6SO4(c) Oxygen in the mineral leadhillite, Pb4SO4(CO3)2(OH)2arrow_forwardBefore the use of systematic names, many compounds had common names. Give the systematic name for each of the following: (a) Blue vitriol, CuSO4*5H2O (b) Slaked lime, Ca(OH)2 (c) Oil of vitriol, H2SO4 (d) Washing soda, Na2CO3 (e) Muriatic acid, HCl (f) Epsom salt, MgSO4*7H2O (g) Chalk, CaCO3 (h) Dry ice, CO2 (i) Baking soda, NaHCO3 (j) Lye, NaOHarrow_forward
- (a) How many elements are found in period 4 in the periodic table? (b) How many elements are found in group 4A (or 14)?arrow_forwardCalculate the molecular mass of the following substances: (a) Ibuprofen, C13H18O2 (a drug used as for pain relief)(b) Phenobarbital, C12H12N2O3 (a drug used as a sedative, hypnotic, and antiseizure medication)arrow_forwardAnswer true or false. (a) Mendeleyev discovered that when elements are arranged in order of increasing atomic weight, certain sets of properties recur periodically.(b) Main-group elements are those in the columns 3A to 8A of the Periodic Table.(c) Nonmet.als are found at the top of the Periodic Table, metalloids in the middle, and metals at the bottom.(d) Among the US known elements,there are approximately equal numbers of metals and non metals.(e) A horizontal row in the Periodic Table is called a group.(f) The Group LA elements are called the "alkali metals"(g) The alkali metals react with water to give hydrogen gas and a metalhydroxide, MOH, where "M' is the metal."(h) The halogens are Group 7A elements.(i) The boiling points of noble gases (Group SA elements) increase goingfrom top to bottom of the column.arrow_forward
- Write the symbol for each of the following ions. (Enter your answer in the form A X q± Z .) (a) the ion with a 3+ charge, 28 electrons, and a mass number of 69 (b) the ion with 36 electrons, 35 protons, and 44 neutrons (c) the ion with 91 electrons, 148 neutrons, and a 4+ charge (d) the ion with a 2+ charge, atomic number 40, and mass number 90arrow_forwardFind the number of protons (p), electrons (e), and neutrons (n) in neutral atoms of the following: (a) 244 94 Pu (b) 48 22 Ti (c) 262 103 Lrarrow_forward1. Provide the chemical formula (including brackets where appropriate) or systematic name for the following compounds. (a) gold(I) hypoiodite (b) HI(aq): (f) Ca(ClO4)2·4H2O: 2. What mass (in g) of chlorine atoms are there in a sample that consists of 5e+23 molecules of molecular chlorine? INSTRUCTIONS: Report your answer to 3 significant figures in scientific notation unless stated otherwise. DO NOT include the units in your answer.arrow_forward
- Chemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage Learning