[化學] 普化問題求救

看板TransBioChem作者finalpoet (finalpoet)時間14年前 (2010/07/01 21:51)推噓3(3推 0噓 17→)

留言20則, 4人參與討論串1/1

2431) How many moles of aqueous ions will be produced from the dissolution of 1.0 mole of K3[Fe(Cl)6] in water?已解 A) 4 B) 10 C) 2 D) 9 E) 1 226) Determine the formula for an aluminosilicate where one half of the silicons are replaced by an aluminum atom. The charge is balanced by magnesium ions.已解 A) Mg(AlO2)2(SiO2)2 B) Mg2(AlO2)2(SiO2)2 C) Mg2(AlO2)2(SiO2) D) Mg2(AlO2)(SiO2)2 E) Mg(AlO2)(SiO2)2 2115) Which of the following statements is TRUE?已解 A) Monosaccharides are the building blocks of polypeptides. B) Nucleotides are the building blocks of saccharides. C) Fatty acids are responsible for DNA replication. D) Peptides are the building blocks of amino acids. E) Carbohydrates are water soluble and responsible for short term energy storage. 1944) Determine the binding energy of an O-16 nucleus. The O-16 nucleus has a mass of 15.9905 amu. A proton has a mass of 1.00728 amu, a neutron has a mass of 1.008665 amu, and 1 amu is equivalent to 931 MeV of energy.已解 A) 8.84 MeV B) 128 MeV C) 138 MeV D) 78.1 MeV E) 38.2 MeV 1837) Calculate the cell potential for the following reaction that takes place in an electrochemical cell at 25°C.已解 Sn(s)|Sn2+(aq,1.8M)||Ag+(aq,0.055M)|Ag(s) A) -0.94 V B) -0.85 V C) +1.02 V D) +0.98 V E) +0.86 V 1843) Which of the following reactions would have the smallest value of K at 298 K?已解 A) A+B→C ;E°cell = +1.22 V B) A+2B→C ;E°cell = +0.98 V C) A+B→2C ;E°cell = -0.030 V D) A+B→3C ;E°cell = +0.15 V E) More information is needed to determine. 186) Balance the following redox reaction if it occurs in basic solution. What are the coefficients in front of ClO2 and H2O in the balanced reaction? H2O2(l)+ClO(aq)→ClO-(aq)+O2(g) A) ClO2 = 1, H2O = 1 B) ClO2 = 1, H2O = 2 C) ClO2 = 4, H2O = 3 D) ClO2 = 4, H2O = 2 E) ClO2 = 2, H2O = 2 167) Calculate the pH of a solution formed by mixing 100.0 mL of 0.20 M HClO with 200.0 mL of 0.30 M KClO. The Ka for HClO is 2.9x10-8 . A) 5.99 B) 8.01 C) 7.54 D) 7.71 E) 6.46 1547) Which one of the following will form an basic solution in water? A) NaC2H3O2 B) LiCN C) KClO2 D) LiBrO E) All of the above will form basic solutions. 小弟愚昧不懂辛苦高手解題 -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 203.71.94.31

→

mensen

07/01 23:39, , 1^F

07/01 23:39, 1^F

→

mensen

07/01 23:40, , 2^F

07/01 23:40, 2^F

→

mensen

07/01 23:40, , 3^F

07/01 23:40, 3^F