You are going to take a quiz on chemical equations. Answer the following questions by selecting the correct choice.
Atoms
Molecules
Subscripts
Bond energies
The number of moles of products equals the number of moles of reactants
The total mass of the product equals the total mass of the reactants
The number of atoms in the products equals the number of atoms in the reactants
The states of matter of the products are independent of the states of reactants
The same mass as the reactants
Less total bond energy than the reactants
More total bond energy than the reactants
The same chemical properties as the reactants
∆H is a negative value
∆H is a positive value
Energy is absorbed during the reaction
Energy is conserved during reaction
2H2O2(l) → 2H2O(l) + O2(g)
Pb(s) + Hg2SO4(s) → PbSO4(s) + 2Hg(l)
2NH3(g) → N2(g) + 3H2(g)
NaCl(aq) + AgNO3(aq) → AgCl(s) + NaNO→3(aq)
It releases energy
The chemical properties of CO2 are different from the individual properties of carbon and oxygen
It absorbs energy
CO2 is a gas and carbon is a crystal
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