What is the mass of 1.6x1020 molecules of carbon dioxide?

In an exothermic reaction the bonding energy of the product is: less than the reactants same as the reactants greater than the reactants dependent upon the presence of a catalyst

In the reaction between a crushed antacid tablet and vinegar what gas is emitted

Areaction is first order. if the initial reactant concentration is 0.0200 m, and 25.0 days later the concentration is 6.25 x 10-4 m, then its half-life is: