Answer:

Explanation:
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In this case, since we have a problem about volume-pressure relationship, the idea here is to use the Boyle's law to calculate the final volume as shown below:

Then, we plug in the initial and final pressures and the initial volume to obtain:

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Answer:
A. 1.63g/dm^3 (3 s.f.)
B. 0.833g/dm^3 (3 s.f.)
C. 1.92g/dm^3 (3 s.f.)
Explanation:
Please see attached picture for full solution.
Answer:
d. when atoms are situated in a repeating array over large atomic distances.
Explanation:
A crystalline material -
It refers to the type of solid substance where the atoms or ions are arranged in a very orderly fashion , composing a well designed lattice , is referred to as crystalline material .
These type of substances are studied under a special subtopic known as crystallography .
Hence , from the given information of the question ,
The correct option is d.
It depends. Probably wobbly paths as the other planets attracted each other.