Answer: Earth's climate has fluctuated through deep time, pushed by these 10 ... How Earth's Climate Changes Naturally (and Why Things Are Different Now) ... So if the climate changed before humans, how can we be sure we're ... can be disruptive, but in the grand scale of Earth's history it's tiny and temporary
Explanation:
Explanation:
when an iron bar rust is an example of a chemical change in which a new substance is formed and the change is not easily reversible.for iron to rust moisture and air must be present.while when a substance freezes,it can be easily reversed through melting and no new substance is formed.this change is termed a physical change.
Answer:
Nonpolar covalent bonds are a type of bond that occurs when two atoms share a pair of electrons with each other. These shared electrons glue two or more atoms together to form a molecul
Explanation:
Answer:
The moles present in 60 g of calcium are 1.5 moles.
Explanation:
forward reaction
a reaction in which reactent react to form product is known as forward reaction
reverse reaction
a reaction in which product react to form reactent is known as reverse reaction
At equilibrium stage
In a chemical equilibrium, the forward and reverse reactions occur at equal rates, and the concentrations of products and reactants remain constant. A catalyst speeds up the rate of a chemical reaction, but has no effect upon the equilibrium position for that reaction.
changing amount of reactent and product
lechatlier principle
" if you impose any change in concentration ( reactant or product) , temperature or pressure on chemical system, the system response in that way that opposes the change "
