The activation energy of a reaction can be decreased by A.
increasing the concentration of the reactants.

B.
increasing the temperature.

C.
increasing the pressure of gaseous reactants.

D.
adding a catalyst.

Anton created a chart listing different types of materials. which best complete the chart?

What is a limitation of using a chemical formula, such as c6h1206, to represent a compound? the chemical formula does not show the types of elements that make up the compound. the chemical formula does not show how the atoms are connected to one another the chemical formula does not show the number of atoms of each element in a molecule. the chemical formula does not show the chemical symbols of the elements in the compound

Which is an example of a vestigial structure? a. tail of a monkey b. fin of a fish c. flower of a plant d. tailbone of a human