Item 2

Which term refers to the difference between the energy of the transition state and the energy of the reactants?

energy of entropy

energy of enthalpy

activation energy

reaction rate energy

Reactants are substances that?

What type of reaction is Al + 3CuSO4 - -> Al2 (SO4) 3 + 3 Cu

What is the amount of ca3 (po4) 2 that can be prepared from a mixture of 9g of Ca (OH) 2 and 11g of H3po4?

Which of the following aqueous solutions are good buffer systems?. 0.21 M hydrofluoric acid + 0.15 M sodium fluoride 0.34 M sodium iodide + 0.25 M sodium perchlorate 0.19 M sodium hydroxide + 0.26 M sodium bromide 0.30 M ammonia + 0.

In what zone are hydrothermal vents located?

A child pulls a sled up a snow-covered hill. The child does 405 J of work on the sled. If the child walks 15 m up the hill, how large of a force must the child exert?

A piece of glass with a mass of 32.50 g specific heat of 0.840 J/g*°C and an initial temperature of 115 °C was dropped into a calorimeter containing 57 g of water (specific heat 4.184 J/g*°C).

Which of the following is the most likely description of the product or products of a double-displacement reaction? A) one new compound B) two new compounds C) oxygen and energy D) one new compound and an element

A balloon is filled with 12L of air at a pressure of 2 atm. What is the volume of ballon if the pressure is changed to 3 atm?

What ionic bond occurs between what particles? A. Two Negative Ions B. A positive and negative ion C. Two positive ions D. Two neutral atoms