Answer:
Antarctic Peninsula, is one of the most important fossil sites on Earth.
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Answer:
Explanation:
Mole = no. Molecules/6.02×10^23
Mole = (2.4×10^25)/(6.02×10^23)
Mole = 39.87mole
Molar mass of NaHCO3 is
= 23 + 1 + 12 + 3(16)
= 84g/mol
Mole = mass/molar mass
Mass = Mole × molar mass
Mass = 39.87 × 84
Mass= 3348.84g
M₀=100 g
T=2 s
t=8s
m=m₀/{2^(t/T)}
m=100/{2^(8/2)}=100/2⁴=6.25 g
There is a change of decrease in entropy in 3Fe(s) + 202(g) -. Fe 304(g)
There is a decrease in a gaseous molecule, which causes a disorder in the system.
Your answer is: 3Fe(s) + 202(g) -. Fe304(g)
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Chemical Reaction
A chemical reaction is a process in which one or more substances, also called reactants, are converted to one or more different substances, known as products. Substances are either chemical elements or compounds.
In a chemical change, new substances are formed. In order for this to occur, the chemical bonds of the substances break, and the atoms that compose them separate and rearrange themselves into new substances with new chemical bonds. When this process occurs, we call it a chemical reaction. A chemical reaction is the process in which one or more substances are changed into one or more new substances.In chemical reactions, atoms are never created or destroyed.
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