When an aldehyde is reacted with hydrogen cyanide a ” Cyanihydrin” is formed. This process is best termed as __________?

A. Electrophilic addition
B. Electrophilic substitution
C. Nucleophilic addition
D. Necleophilic substitution

Which of the following solvents would best facilitate an SN2 substitution reaction?

A. Water
B. Hexane
C. Dimethylflormamide
D. Ethanol

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?

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?

A. 53.4 grams
B. 54.4 grams
C. 55.4 grams
D. 56.4 grams

How many moles are in 22.2 grams of Calcium chloride, CaCl2?

A. 0.2 moles
B. 0.3 moles
C. 0.4 moles
D. 0.5 moles

What is the mass percent of silver in silver notrate, AgNO3?

A. 64.5%
B. 65.6%
C. 63.5%
D. 61.5%

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?

A. 74% fe
B. 75% fe
C. 77% fe
D. 78% fe

A compound is determined to have an emperical formula of C2H6O and a molar mass of 138 g/mole. What is the molecular formula?

A. C2h6o
B. C6h18o3
C. C6h12o6
D. C2h5o

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?

A. C2h4
B. C3h6
C. C4h8
D. C5h10