1161 Poisonous gas present in the exhaust fumes of a jet plane is__________? Chemistry Medium Full question → A Flurocarbon B Carbon monoxide C Methane D C2H2
1162 The formula C6H5-CO-CH3 represents_______ ? Chemistry Medium Full question → A Acetone B Acetic acid C Acetophenone D Phenyl acetate
1163 What is the density ofargon gas at a temperature of 30°C and a pressure of 1.05 atm? Chemistry Medium Full question → A 1.65 g/L B 1.67 g/L C 1.68 g/L D None of the above
1164 When an aldehyde is reacted with hydrogen cyanide a ” Cyanihydrin” is formed. This process is best termed as __________? Chemistry Medium Full question → A Electrophilic addition B Electrophilic substitution C Nucleophilic addition D Necleophilic substitution
1165 Which of the following solvents would best facilitate an SN2 substitution reaction? Chemistry Medium Full question → A Water B Hexane C Dimethylflormamide D Ethanol
1166 In a molecule of carbon monoxide, what are the formal charges on the two atoms? Chemistry Medium Full question → A Carbon=0, Oxygen=0 B Carbon= +1, Oxygen= -1 C Carbon= -1, Oxygen= +1 D Carbon=0, Oxygen= -1
1167 Which of the following aqueous solutions would have the highest boiling point? Chemistry Medium Full question → A 0.20 m glucose B 0.20 m NaCl C 0.15 m CaCl2 D 0.25 m sucrose
1168 In a molecule of carbon monoxide, what are the formal charges on the two atoms? Chemistry Medium Full question → A Carbon=0, Oxygen=0 B Carbon= +1, Oxygen= -1 C Carbon= -1, Oxygen= +1 D Carbon=0, Oxygen= -1
1169 Which of the following aqueous solutions would have the highest boiling point? Chemistry Medium Full question → A 0.20 m glucose B 0.20 m NaCl C 0.15 m CaCl2 D 0.25 m sucrose
1170 The mass of 3.2 moles of ammonia (NH3) gas? Chemistry Medium Full question → A 53.4 grams B 54.4 grams C 55.4 grams D 56.4 grams
1171 How many moles are in 22.2 grams of Calcium chloride, CaCl2? Chemistry Medium Full question → A 0.2 moles B 0.3 moles C 0.4 moles D 0.5 moles
1172 What is the mass percent of silver in silver notrate, AgNO3? Chemistry Medium Full question → A 64.5% B 65.6% C 63.5% D 61.5%
1173 A sample of an iron and oxygen ore has a mass of 35.8 grams. The iron in the compound has a mass of 27.9 grams. What is the percent iron in the ore? Chemistry Medium Full question → A 74% Fe B 75% Fe C 77% Fe D 78% Fe
1174 A compound is determined to have an emperical formula of C2H6O and a molar mass of 138 g/mole. What is the molecular formula? Chemistry Medium Full question → A C2H6O B C6H18O3 C C6H12O6 D C2H5O
1175 A substance is analyzed and found to have an emperical formula of CH2 and a molar mass of 56g/mole. What is the molecular formula of the compound? Chemistry Medium Full question → A C2H4 B C3H6 C C4H8 D C5H10
1176 The number of atoms present in 21.6 gram of silver (atomic weight = 108) are same as the molecules in__________? Chemistry Medium Full question → A 1.8 gram of H 2 O B 12 moles of KMnO4 C 0.6N H 2 SO 4 D 4.6 gram of C 2 H 5 OH
1177 The molecular formula for cholesterol is C27 H46 O. What are the degrees of unsaturation for this compound? Chemistry Medium Full question → A 5 B 6 C 7 D 8
1178 The number of d-electrons in Fe2+ (Z = 26) is not equal to that of____________? Chemistry Medium Full question → A p-electrons in Ne(Z = 10) B s-electrons in Mg(Z = 12) C d-electrons in Fe(Z = 26) D p-electrons in CI(Z = 17)
1179 The metallurgical process in which a metal is obtained in a fused state is called__________? Chemistry Medium Full question → A smelting B roasting C calcinations D froth floatation
1180 The molecules of which gas have highest speed? Chemistry Medium Full question → A H2 at -73oC B CH 4 at 300 K C N 2 at 1,027 o C D O 2 at 0 o C