Which of the following affects the rate of a chemical reaction?

a. the presence of a catalyst

b. the temperature

c. the concentration of reactants

d. all of the above

A certain material has a mass of 565 g while occupying 50 cm3 of space. what is this material?

What conclusion can be drawn about the relationship between the arrangement of elements on the periodic table and the patterns observed in their properties? 1) - properties of elements are related to atomic numbers.

Which characteristic is shared by all arthropods

When water is heated, the temperature eventually reaches a constant value and forms a plateau on the graph. What does the plateau indicate?

What is the first step in creating a Lewis structure for a molecule?

What two quantities are conserved in every chemical reaction? a. moles and mass c. volume and mass b. mass and atoms d. moles and atoms?

What two chemical mechanisms change pyruvate to acetyl-CoA in the pyruvate dehydrogenase complex? Group of answer choices a) Decarboxylation and condensation. b) Oxidation and decarboxylation. c) Condensation and dehydrogenation.

Which earth cycle does the suns energy drive

How many moles are in 10 grams of CaCl2?

Which is the correct formula for phosphorus pentachloride? PCl4 because a subscript of 4 indicates four Cl atoms PCl5 because a subscript of 5 indicates five Cl atoms P5Cl because a subscript of 5 indicates five P atoms P5Cl3 because a subscript of