7,406.
A.
R
B.
P
C.
S
D.
Q
Correct answer is B
No explanation has been provided for this answer.
7,407.
A.
0.75
B.
0.25
C.
1.00
D.
0.50
Correct answer is A
No explanation has been provided for this answer.
7,408.
The diagram above represents the formation of
A.
a metallic bond
B.
an electrovalent bond
C.
a covalent bond
D.
a coordinate covalent bond
Correct answer is C
Covalent bonds involve the sharing of electrons between two atoms
7,409.
Use the graph above to answer this question.How long does it take all the solid to melt?
A.
2.5 mins
B.
6.0 mins
C.
1.0 min
D.
3.0 mins
Correct answer is A
No explanation has been provided for this answer.
7,410.
A.
125 oC
B.
150oC
C.
175oC
D.
250oC
Correct answer is B
No explanation has been provided for this answer.
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