Which of the following solvents would best facilitate an SN2 substitution reaction?
A. Water
B. Hexane
C. Dimethylflormamide
D. Ethanol
Chemistry Mcqs
In a molecule of carbon monoxide, what are the formal charges on the two atoms?
In a molecule of carbon monoxide, what are the formal charges on the two atoms?
A. Carbon=0, Oxygen=0
B. Carbon= +1, Oxygen= -1
C. Carbon= -1, Oxygen= +1
D. Carbon=0, Oxygen= -1
Which of the following aqueous solutions would have the highest boiling point?
Which of the following aqueous solutions would have the highest boiling point?
A. 0.20 m glucose
B. 0.20 m NaCl
C. 0.15 m CaCl2
D. 0.25 m sucrose
The mass of 3.2 moles of ammonia (NH3) gas?
The mass of 3.2 moles of ammonia (NH3) gas?
A. 53.4 grams
B. 54.4 grams
C. 55.4 grams
D. 56.4 grams
The law which states that the amount of gas dissolved in a liquid is proportional to its partial pressure is___________?
The law which states that the amount of gas dissolved in a liquid is proportional to its partial pressure is___________?
A. Dalton’s law
B. Gay Lussac’s law
C. Henry’s law
D. Raoult’s law
The main buffer system of the human blood is____________?
The main buffer system of the human blood is____________?
A. H2CO3 – HCO3
B. H2CO3 – CO32-
C. CH3COOH – CH3COO–
D. NH2CONH2 – NH2CONH+
The most commonly used bleaching agent is_________?
The most commonly used bleaching agent is_________?
A. alcohol
B. carbon dioxide
C. chlorine
D. sodium chlorine
The heat required to raise the temperature of body by 1 K is called___________?
The heat required to raise the temperature of body by 1 K is called___________?
A. specific heat
B. thermal capacity
C. water equivalent
D. None of the above
The mass of P4O10 that will be obtained from the reaction of 1.33 gram of P4 and 5.07 of oxygen is___________?
The mass of P4O10 that will be obtained from the reaction of 1.33 gram of P4 and 5.07 of oxygen is___________?
A. 2.05 gram
B. 3.05 gram
C. 4.05 gram
D. 5.05 gram
The octane number of zero is assigned to____________?
The octane number of zero is assigned to____________?
A. 2-methyl octane
B. n-heptane
C. iso-octane
D. 3-methyl octane