Explanation:
the best way to understand the age of the earth is to estimate the age of matirials in it
Answer:
d i dont now but im sure my answer is d im not good to write english word
It would 47.7 because you would have to both minus the number together.
Answer:
Hey mate, here is your answer. Hope it helps you.
Explanation:
The balanced equation is 2Na+2H2O———-> 2NaOH +H2.
There are a couple of ways todetermine if a reaction is exothermic or endothermic. Endothermic meaning that heat is added to the reaction to make the reactants interact and exothermic meaning heat is released during the reaction between the two reactants.
In endothermic reactions you can find a triangle above the arrow.
