Rutgers GEN ORG BIOCHEM I Quiz 1

Question 1 Match the structures with the correct functional group. Use each choice ONLY once

a. 

b. 

c. 

d. 

e. 

           

Question 2 If you have 76 g of radioactive   U how much remains after 4 half -lives?

2.4 g

4.8g

9.5g

19g

38g

Question 3The formation of ions typically occurs when

 nonmetal atoms lose electrons and metals gain them.

metal and nonmetal atoms are close together in the number of valence electrons.

metal and nonmetal atoms have the same number of electrons.

nonmetal atoms gain electrons and metal atoms lose them.

Question 4How many protons and electrons does Mg2+ have?

12 protons and 12 electrons

12 protons and 14 electrons

14 protons and 12 electrons

12 protons and 10 electrons

Question 5The formula for barium oxide is ___.

BaO3

Li7Cl

BaO

Ba2O

Ba2O2

Question 6 What is the proper name of the compound N2O3?

nitrate

nitrogen(II) oxide

nitrogen trioxide

dinitrogen trioxide

Question 7 Calculate the mass of 10.00 moles of strontium chloride, SrCl2.

0.06308 grams

2245 grams

1231 grams

 1585 grams

 Question 8 Melting iron represents_?

 physical change

chemical change

No answer text provided.

No answer text provided.

Question 9A kitten’s normal body temperature is 102.1ºF. Express this temperature in kelvins.

ºF= (1.8 x ºC) + 32            ºC= ºF – 32             ºC=K – 273       K= ºC+ 273

                          1.8                               

488.9 K

-234.1 K

311.9 K

375.1 K

Question 10The normal dosage for azinthromycin, an antibiotic, is 3.3 mg/kg. What is the proper dose for a 150.1 lb patient? (Given: 1kg = 2.2 lbs.)

1089 mg

225.2 mg

20.67 mg

495.1 mg

Question 11The number 390000, expressed correctly in scientific notation, is ___.

3.9 x 10-6                                                                  

3.9 x 105

3.9 x 106                                                                   

3.9 x 10-5

Question 12Which of the following numbers contains the designated CORRECT number of significant figures? More than one answer MAY be correct

27.0 ?C                    3 significant figures

3.6 x 102m                3 significant figures

0.00450 m                 5 significant figures

27.051 mL               5 significant figures

 

Question 13 Which of the following atom pairs is connected by an ionic bond?

K and I

K and Mg

C and O

Mg and Ba

Question 14 The number of covalent bonds that a carbon atom is expected to form is_?

4

3

2

1

7

Question 15The atom's structure characteristically has _?

protons and neutrons inside nucleus

electrons inside nucleus

mostly mass outside nucleus

protons and electrons inside nucleus

Question 16 The name for the transition metal, Cu2+ ion is

copper ion.

cobalt (II) ion.

copper (I) ion.

copper (II) ion.

Question 17Atoms of elements belonging to same representative group (A) have an identical number of

total electrons.

energy levels.

inner electrons.

valence electrons.

 Question 18How many moles of Sulfuric acid, H2SO4, are in 2.56 grams?

0.0261 mol

0.256 mol

251 mol

276 mol

Question 19Which statement is correct?

Nonmetals are on the right side of periodic table

nonmetals are on the left side of periodic table

Ba is in Group 2A and Period 5

K is a transition metal

Question 20 Convert 77.2oF to Kelvins   oC=oF-32/1.8  K= oC+273.15  oF=(1.8 x oC) + 32

298.3K

298.25K

444K

444.2K