Chemistry

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The base-dissociation constant of ethylamine (C2H5NH2 ) is 6.4 10-4 at 25.0 C. The H+ in a 1.4 ... Started by anshika	1 Replies 72 Views	Aug 27, 2018 by GCabra
Carbon dioxide is a gas which causes environmental concern because of the greenhouse effect. What is ... Started by rlane42	1 Replies 81 Views	Aug 27, 2018 by cegalasso
How many minutes will it take to plate out 16.22 g of Al metal from a solution of Al3+ using a ... Started by tuffie	1 Replies 75 Views	Aug 27, 2018 by joneynes
Which one of the following concentration units varies with temperature? A) molarity B) mass ... Started by acc299	3 Replies 68 Views	Aug 27, 2018 by trampas
What is the formula for phosphoric acid? A) H3PO4 B) H2PO4 C) H4PO4 D) H3PO3 E) none of ... Started by nummyann	1 Replies 67 Views	Aug 27, 2018 by yeungji
The element that corresponds to the electron configuration 1s22s22p2 is ________. A) lithium B) ... Started by tth	1 Replies 78 Views	Aug 27, 2018 by Jane
The three main electrolytes in the body are chloride, barium, and carbonate ions. Indicate ... Started by CBme	1 Replies 64 Views	Aug 27, 2018 by kbennett34
The most difficult species to reduce and the poorest oxidizing agent is ________. Fill in the ... Started by nelaaney	3 Replies 68 Views	Aug 27, 2018 by bpool94
A vessel contained N2, Ar, He, and Ne. The total pressure in the vessel was 987 torr. The partial ... Started by Coya19@aol.com	1 Replies 331 Views	Aug 27, 2018 by Meganchabluk
There are ________ unpaired electrons in a ground state chlorine atom. A) 4 B) 3 C) 2 D) 1 E) ... Started by maychende	1 Replies 284 Views	Aug 27, 2018 by ilianabrrr
Explain why hydrofluoric acid etches glass. What will be an ideal ... Started by nevelica	1 Replies 85 Views	Aug 27, 2018 by mcinincha279
At constant temperature and pressure the Gibbs free energy value is a measure of the ________ of a ... Started by newbem	3 Replies 127 Views	Aug 27, 2018 by joshbk44
Explain why HF (aq) is a relatively weak acid compared to other hydrohalic acids. What will be an ... Started by Hungry!	1 Replies 80 Views	Aug 27, 2018 by SVictor
The pressure in a 12.2 L vessel that contains 2.34 g of carbon dioxide, 1.73 g of sulfur dioxide, ... Started by 2125004343	1 Replies 76 Views	Aug 27, 2018 by braelync
A person who diets many times and regains the weight has a more difficult time losing weight the ... Started by mia	1 Replies 70 Views	Aug 27, 2018 by Melissahxx
Balance the chemical equation given below, and calculate the volume of nitrogen monoxide gas ... Started by anjilletteb	3 Replies 66 Views	Aug 27, 2018 by angrybirds13579
The total concentration of ions in a 0.250 M solution of HCl is ________. A) 0 B) 0.125 M C) ... Started by bb	1 Replies 51 Views	Aug 27, 2018 by ttt030911
A solution contains 15 ppm of benzene. The density of the solution is 1.00 g/mL. This means that ... Started by KWilfred	1 Replies 120 Views	Aug 27, 2018 by raili21
The three most concentrated ions in seawater are ________. Fill in the blank(s) with correct ... Started by abc	1 Replies 59 Views	Aug 27, 2018 by voltaire123
In the formula G = -nFE, F is the ________. Fill in the blank(s) with correct ... Started by gonzo233	3 Replies 76 Views	Aug 27, 2018 by EAN94
The oxidation number of phosphorus in PF5 is ________. A) +5 B) +3 C) +1 D) -5 E) ... Started by erika	1 Replies 71 Views	Aug 27, 2018 by bobsmith
An aqueous solution of ________ will produce an acidic solution. A) NH4I B) KBr C) Sr(ClO4)2 ... Started by xclash	1 Replies 182 Views	Aug 27, 2018 by Tonyam972
Which hydroxides are weak bases? A) KOH B) Ba(OH)2 C) RbOH D) CsOH E) None of these choices ... Started by sdfghj	1 Replies 109 Views	Aug 27, 2018 by atrochim
A sample of H2 gas (2.0 L) at 3.5 atm was combined with 1.5 L of N2 gas at 2.6 atm pressure at a ... Started by MGLQZ	3 Replies 37 Views	Aug 27, 2018 by kmb352
Which of the following is soluble in water at 25 C? A) AgNO3 B) Hg2Cl2 C) PbCl2 D) Ag2S ... Started by Pea0909berry	1 Replies 163 Views	Aug 27, 2018 by nguyenhoanhat