What are interesting facts about chemical changes

Which of the following combinations will result in a reaction that is never spontaneous? 1) positive enthalpy change and positive entropy change 2) positive enthalpy change and negative entropy change 3) negative enthalpy change and positive entropy

Carbon is found in all known forms of life. Which statement best describes why carbon is uniquely suited to forming macromolecules such as those found in living organisms? A. Carbon forms large compounds that are not chemically reactive. B.

Your lap feels warms because your laptop computer has been sitting on top it.

What conversion factor is used to convert a quantity measured in milligrams to grams?

Combustion analysis of naphthalene, a hydrocarbon used in mothballs, produced 8.80 g co2 and 1.44 g h2o. calculate the empirical formula for naphthalene.

A crane lifts a cargo box 10 m off the ground. If the crane lifts the cargo box twice as high, the potential energy will increase by

What is the main purpose of a particle accelerator?

Is this statement true or false? Bases feel slippery. A. True B. False

why blue intensity of copper (2) sulphate will decrease in a voltaic cell with zinc electrode in zinc sulphate solution and copper 2sulphate solution with copper electrode in it (with salt bridge)

What is the charge for MnO4