Answer:
Neutron
Explanation:
Neutron, neutral subatomic particle that is a constituent of every atomic nucleus except ordinary hydrogen. It has no electric charge and a rest mass equal to 1.67493 × 10−27 kg—marginally greater than that of the proton but nearly 1,839 times greater than that of the electron.
Answer:
Explanation:
You can view more details on each measurement unit: molecular weight of Copper(I) Oxide or grams The molecular formula for Copper(I) Oxide is Cu2O. The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles Copper(I) Oxide, or 143.0914 grams.
Answer: It depends on the element.
Explanation: Every element has a different amount of protons in its nucleus. It is the same as its atomic number on the periodic table. For example: Hydrogen has an atomic number of 1 because it has 1 proton in its nucleus, Helium has 2, Carbon has 6, Platnium has 78, and so on...
Gas.
A gas has no fixed shape as it takes shape of container.
It has no fixed volume as it depends on the container.
<span>The balanced chemical reaction would be written as:
</span>Hg(ClO4)2<span> + </span>Na2SO4<span> → 2 NaClO4 + </span>HgSO4(s)<span>
We are given the amounts of both of the reactants to be used for the reaction. We use these values as the starting point of the calculations.
18.96 g </span>Hg(ClO4)2 ( 1 mol / 399.4912 g ) = 0.0475 mol Hg(ClO4)2
6.256 g Na2SO4 ( 1 mol / <span>142.04 g ) = 0.0440 mol Na2SO4
We have a 1 is to 1 ratio of the reactants. Thus, the limiting reactant would be Na2SO4. We use this value for calculating the amount of products in the reaction.
</span>0.0440 mol Na2SO4 ( 1 mol HgSO4 / 1 mol Na2SO4 ) ( 296.65 g / mol ) = 13.06 g HgSO4
mass of excess reactant = (0.0475 - 0.0440) mol ( 399.4912 g / 1 mol ) = 172.180 g Hg(ClO4)2
