General organic and biological chemistry 2nd edition janice gorzynski smith test bank

... needed to succeed in chemistry 13) A calculator answer of 423.6059 must be rounded off to three significant figures What answer is reported? A) 423 B) 424 C) 1.7420 D) 423.6 E) 423.7 Answer: ... g to 4.054 g B) 0.03954 g to 0.040 g C) 103.692 g to 103.7 g D) 109 526 g to 109 500 g E) 20.0332 g to 20.0 g Answer: E Page Ref: 2.3 Learning Obj.: 2.3 Global Outcomes: G4 Demonstrate...

Ngày tải lên: 19/10/2017, 16:08

... Xz consists of two isotopes having masses of 100.0 amu and 102.0 amu A sample of Xz was found to contain 75.0% of the 100Xz isotope and 25.0% of the 102Xz Calculate the atomic weight of Xz A) 100.3 ... 25) The symbol of the element with 23 protons is A) Mg B) Na C) V D) B E) none of the above Answer: C Diff: Section: 2.2 26) An atom with Z = 31 and A = 69 contains p...

Ngày tải lên: 27/10/2017, 09:26

... Claire has received scores of 85, 88, 87, and 85 on her algebra tests What is the minimum score she must receive on the fifth test to have an overall test score average of at least 88? (Hint: ... and 75 necklaces B) 50 bracelets and 70 necklaces C) 60 bracelets and 60 necklaces D) 55 bracelets and 65 necklaces 251) _ 252) Jon throws all his nickels and dimes in a jar at home...

Ngày tải lên: 08/09/2017, 09:32

... Nearest router B ISP C Self D Nearest NAP The answer is C 17.Internet addresses of the form www.chuckeasttom.com are called what? A User-friendly web addresses B Uniform resource locators C User-accessible ... Wide Web B Email C TCP D The first computer virus The answer is C The answer is A 21.Tim Berners-Lee invented what? A The World Wide Web B Email C TCP D The first computer virus The...

Ngày tải lên: 19/10/2017, 16:14

... outside nucleus , b only c only , inside nucleus d and n PTS: 56 Write the formula for a compound consisting of sodium atoms, phosphorus atom, and oxygen atoms a S3PO4 b 3NaP4O c Na3P2(O2) d Na3PO4 ... contains both hydrogen molecules and oxygen molecules ANS: F PTS: 18 A diet is planned for a trip on a space ship and is lacking in milk, but is rich in turnips and broccoli Such...

Ngày tải lên: 19/10/2017, 16:08

Ngày tải lên: 04/06/2014, 15:43

Ngày tải lên: 02/12/2016, 12:53

... hydroxylamine (NH2OH), semicarbazide (NH2NHCONH2) and 2, 4-dinitrophenylhydrazine takes place by the same mechanism described for primary amines to give oximes, semicarbazones, and 2, 4-dinitrophenylhydrazones, ... H2NNH NH2 R R R' O C R' R NH2 C N C C R' H N C O R' Oxime Semicarbazone NO2 NO2 c) O + C R H N H N N H2N NO2 Fig 2, 4-Dinitrophenylhydrazone C R' R R' Synthesis of oximes, semic...

Ngày tải lên: 18/05/2017, 15:44