Author Question: Describe the difference between an atomic element and a molecular element. What will be an ideal ... (Read 28 times)

erika · **on:** Aug 27, 2018

Describe the difference between an atomic element and a molecular element.

What will be an ideal response?

Question 2

Predict the charge of the most stable ion of bromine.

A) 2+
B) 1+
C) 3+
D) 1-
E) 2-

Question 3

Determine the theoretical yield and the percent yield if 21.8 g of K2CO3 is produced from reacting 27.9 g KO2 with 29.0 L of CO2 (at STP). The molar mass of KO2 = 71.10 g/mol and K2CO3 = 138.21 g/mol.

4 KO2(s) + 2 CO2(g) 2 K2CO3(s) + 3 O2(g)

A) 27.1 g, 80.4 yield
B) 179 g, 12.2 yield
C) 91.7 g, 23.8 yield
D) 206 g, 10.6 yield
E) 61.0 g, 35.7 yield

Question 4

Choose the paramagnetic species from below.

A) Ti4+
B) O
C) Ar
D) All of the above are paramagnetic.
E) None of the above are paramagnetic.

Question 5

Choose the diamagnetic species from below.

A) Sn2
B) Br
C) P
D) Cr
E) None of the above are diamagnetic.

orangecrush · **Reply #1 on:** Aug 27, 2018

Answer to Question 1

Atomic elements exist in nature with a single atom at their basic unit; molecular elements exist in nature with more than one atom as their basic unit.

Answer to Question 2

D

Answer to Question 3

A

Answer to Question 4

B

Answer to Question 5

A