Answer:
A thermometer.
Explanation:
An exothermic reaction is a reaction which releases energy through heat. The best way to determine if a reaction is exothermic is by measuring the change in temperature with a thermometer.
Rubber exists in both forms
Answer: A base used in toothpaste is glycerol which is something that helps keep the toothpaste from drying out.
Explanation:
Chromosomes
and also in the nucleus
Answer:
1.5 litre of C5H12 produce 9 litre of water vapour;
Explanation:
First balance the combustion reaction;
→
from the balance reacion it is clearly that,
one mole of C5H12 reacts completely with 8 mole of O2 gas;
Hence
one litre of C5H12 reacts completely with 8 litre of O2 gas;
there fore 1.5 litre C5H12 needs 12 litre oxygen gas but we have 15 litre.
so,
C5H12 is a limiing reactant and O2 is a excess reactant.
so quantity of H2O depends on limiting reactant;
one litre of C5H12 produce 6 litre of water vapour;
therefore,
1.5 litre of C5H12 produce 9 litre of water vapour;