Answer:
hair is a physical change.
Cooking is a physical and chemical change.
Ice cream melting in the sun is a physical change.
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Answer: 633.6 g of 
can be produced from the decomposition of 4.8 moles of 
Explanation:
The balanced chemical equation for decomposition of 
is :
According to stoichiometry :
1 mole of produce = 3 moles of
Thus 4.8 moles of will rproduce=
of
Mass of 
Thus 633.6 g of can be produced from the decomposition of 4.8 moles of
Some elements can have to electrons and be stable in their shell they are stable in a duplet state instead of a octet state
That makes the Earth, the Sun, and the rest of the solar system
<span>something like 23 thousand times as old as the human species !
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True. Aquaculture is basically the rearing of aquatic animals for food
