Which of the following oxides has a giant covalent structure?
Al\(_2\)O\(_3\)
Na\(_2\)O
P\(_4\)O\(_10\)
SiO\(_2\)
Correct answer is D
- Silicon dioxide is an example of a substance with a giant covalent structure . It contains many silicon and oxygen atoms. All the atoms in its structure are linked to each other by strong covalent bonds. The atoms are joined to each other in a regular arrangement, forming a giant covalent structure.
The bond between NH\(_3\) and H\(^+\) in NH4\(^+\) is?
dative
covalent
hydrogen
electrovalent
Correct answer is A
No explanation has been provided for this answer.
0.031
0.125
0.640
1.560
Correct answer is B
No explanation has been provided for this answer.
3.75 dm\(^3\)
7.59 dm\(^3\)
15.0 dm\(^3\)
30.0dm\(^3\)
Correct answer is C
1 mole of methane reacts with 2 moles of oxygen
1 vol of methane reacts with 2 vol of oxygen
: 7.5 vol of methane will yield 15 vol of oxygen in dm\(^3\)
3P
2P
\(frac{3}{2}\) P
\(frac{2}{3}\) P
Correct answer is C
No explanation has been provided for this answer.