D. a change in color of a substance
Answer: a. 0.26mol
b. 0.000479mol
c. 1.12mol
Explanation: Please see attachment for explanation
The answer to your question would be silicon. I hope this helped!!!
Sorry this is late but the molecules in the substance will move much slower and take up less place as a molecule that moves faster will take up more space
Hope this helps :))
Carbon atoms are saturated with (surrounded by) Hydrogen atoms