Chemistry

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Which of the following professions requires a knowledge of chemistry? A) dentist B) nurse C) ... Started by lunatika	1 Replies 47 Views	Aug 27, 2018 by HandsomeMarc
On average, ________ neutrons are produced by every fission of a uranium-235 nucleus. A) 4 B) ... Started by D2AR0N	1 Replies 137 Views	Aug 27, 2018 by dawsa925
What is the oxidation state of iron in CaNaFe(CN)6? A) 0 B) +2 C) +3 D) +4 E) ... Started by shenderson6	3 Replies 125 Views	Aug 27, 2018 by Liamb2179
What is the term for the electrons that occupy the outermost s and p sublevels of an atom? A) ... Started by audragclark	1 Replies 136 Views	Aug 27, 2018 by 234sdffa
Two deviations of real gases from ideal gases which are treated in the van der Waals equation are ... Started by asmith134	1 Replies 111 Views	Aug 27, 2018 by coreycathey
Which of the following scientists contributed to the development of the periodic table of elements? ... Started by corkyiscool3328	1 Replies 68 Views	Aug 27, 2018 by nicoleclaire22
Which of the following is not an ionic compound? A. Na3P B. CO2 C. CaCO3 D. ... Started by mpobi80	3 Replies 92 Views	Aug 27, 2018 by jointhecircus
Which of the following scientists did not contribute to the development of the periodic table of ... Started by serike	1 Replies 76 Views	Aug 27, 2018 by meganlapinski
The mole fraction of He in a gaseous solution prepared from 1.0 g of He, 6.5 g of Ar, and 10.0 g of ... Started by cool	1 Replies 156 Views	Aug 27, 2018 by carlsona147
What is the coordination number of cobalt in Co(NH3)5Cl(NO3)2? A) 12 B) 8 C) 4 D) 2 E) ... Started by kellyjaisingh	1 Replies 73 Views	Aug 27, 2018 by Eazy416
If a rectangular solid has a mass of 59.345 g and measures 10.05 cm by 5.20 cm by 1.25 cm, what is ... Started by Brittanyd9008	3 Replies 37 Views	Aug 27, 2018 by pallen55
Is it possible to observe one visual image and have two different perceptions? A) yes B) It is ... Started by krzymel	1 Replies 59 Views	Aug 27, 2018 by karlss
Which of the following regions of the earth's atmosphere contains the ozone layer? A) mesosphere ... Started by viki	1 Replies 129 Views	Aug 27, 2018 by memslove
What is the oxidation state of cobalt in Co(NH3)5Cl(NO3)2? A) 0 B) 2 C) 3 D) 4 E) ... Started by silviawilliams41	1 Replies 108 Views	Aug 27, 2018 by pratush dev
If the density of copper is 8.92 g/cm3, what is the thickness of a copper foil that has a mass of ... Started by mp14	3 Replies 93 Views	Aug 27, 2018 by gasdhashg
The name of the ion CN is A. acetate. B. carbonate. C. cyanide. D. ... Started by altibaby	1 Replies 64 Views	Aug 27, 2018 by Eunice618
What is the oxidation state of chromium in Cr(H2O)4Cl2+? A) 0 B) +2 C) +3 D) -2 E) ... Started by geodog55	1 Replies 137 Views	Aug 27, 2018 by ntsoane kedibone
A solution contains 33 phosphoric acid by mass. This means that ________. A) 100 g of this ... Started by Yolanda	1 Replies 68 Views	Aug 27, 2018 by covalentbond
What volume of a 0.540 M NaOH solution contains 11.5 g of NaOH? A) 0.155 L B) 0.532 L C) 1.88 L ... Started by Metfan725	3 Replies 141 Views	Aug 27, 2018 by connor417
What happens to the mass number and the atomic number of an element when it undergoes alpha decay? ... Started by sjones	1 Replies 181 Views	Aug 27, 2018 by duy1981999
Calculate the molality of a 21.6 (by mass) aqueous solution of phosphoric acid (H3PO4 ). A) 2.81 ... Started by OSWALD	1 Replies 186 Views	Aug 27, 2018 by lgoldst9
What is the correct formula for a compound of boron and sulfur? A. B2S B. BS3 C. B3S D. ... Started by Beheh	1 Replies 82 Views	Aug 27, 2018 by chreslie
Which one of the following processes results in a decrease in the number of neutrons? A) alpha ... Started by kodithompson	3 Replies 77 Views	Aug 27, 2018 by Smiles0805
Calculate the molarity of phosphoric acid (H3PO4 ) in a 22.1 (by mass) aqueous solution. A) ... Started by xclash	1 Replies 245 Views	Aug 27, 2018 by jamesnevil303
Calcium sulfate is the name of A. CaSO4. B. Ca2SO4. C. Ca(SN)2. D. Ca ... Started by dollx	1 Replies 105 Views	Aug 27, 2018 by lou