Answer:
I think it should be Carbon.
An ELEMENT is a substance that cannot be broken down into other substances by ordinary chemical procedures. Some easy examples would be: <span>gold, iron, carbon, </span>hydrogen<span>, </span>oxygen<span>, nitrogen.</span>
Answer:
2.408x10^23 molecules
Explanation:
Avogadro's hypothesis gives us a background understanding that 1mole of any substance contains 6.02x10^23 molecules.
From the above conclusion,
1mole of N205 contains 6.02x10^23 molecules.
Therefore, 0.4mole of N2O5 will contain = 0.4 x 6.02x10^23 = 2.408x10^23 molecules
Answer:
a covalent would be the two that are nonmetals
Answer:The bubbles exhaled by a scuba diver grow as they approach the surface of the ocean. The pressure exerted by the weight of the water decreases with depth, so the volume of the bubbles increases as they rise.
Explanation: