Answer:
the positively charged particle found in atomic nuclel
Explanation:
protons carry positive charge and attracts negatively charged particles called electron
For an exothermic reaction,heat energy is released out.
Enthalpy change = Energy of products - Energy of reactants
Here enthalpy change is negative,as energy of products is less than energy of reactants.
Hence heat is released in exothermic reactions.
And the products have lower potential energy than the reactants, and the enthalpy change is negative.
The metals are found on the bottom left of the table, while the nonmetals are found at the top right. These elements are separated by a 'band' of semimetals
Answer:
are those the answer choice
Explanation:
Moles=Mass/Molecular Mass
Mass=MolesX Molecular Mass
Molar Mass Na2SO4= 2x22.99+32.07+(4x16)=142.05g/mol
m=0.0848/142.05
0.0005961<u>8</u><u>5</u><u>g</u>
