Answer:
substance
Explanation:
A mixture is when two or more <u>different</u> atoms/molecules are together, but not joined.
A substance is when the <u>same </u>atom/molecule is in a group together.
In this example, it is a substance because it is comprised of the same molecule not joined all together. If you wanted a mixture, other colored atoms/molecule (e.g. add green atoms) would change it to this property.
<span>The reaction leads to carbon dioxide gas.
</span><span>It releases CO2 bubbles and leftover of sodium nitrate solution.</span>
Answer:
Explanation:
Number of molecules = Moles x Avogadro number
= 65 x 6.022 x 10^23
= 3.9 x 10^25