A decomposition reaction has a half-life that does not depend on the initial concentration of the reactant. what is the order of the reaction?

4. Describe in detail the relationship between chemical bonds and energy. What must be true of the bonds for a reaction to be endothermic, and what must be true for the reaction to be exothermic?

A 100.0 mL sample of 1.020 M HCl is mixed with a 50.0 mL sample of 2.040 M NaOH in a Styrofoam cup. If both solutions were initially at 24.

An anhydrous (water removed) salt has a formula mass of 160.167 g/mol. If the hydrated version of the salt has 8 mol of water associated with it, what is the mass % of water in the hydrated salt? Report your answer to three digits after the decimal.

Which statement is false? Tert-Butyl alcohol reacts with HCl to give 2-methylpropene by an E1 mechanism. with HCl to give 2-chloro-2-methylpropane by an SN1 mechanism. with HCl and HBr at very different rates.

Which one of these defines the "like dissolves like" rule of solubility?

Which of the following is a measure of randomness in a system? A) entropy. B) kinetic energy. C) potential energy. D) chemical energy.

What substance can be broken down by chemical means? A) ammonia B) aluminum C) antimony D) argon (Castle learning question)

How the law of conservation of mass could be useful for investigating chemical changes

A covalent chemical bond is one in which outer-shell electrons of two atoms are shared so as to satisfactorily fill the outer electron shells of both atoms. protons and neutrons are shared by two atoms so as to satisfy the requirements of both atoms.

To break a chemical bond, energy must be (1) absorbed (2) destroyed (3) produced (4) released