Two molecules that can react with each other will react if they collide with high enough energy and

The temperature of a sample of liquid water changes from 50°C to 30°C. Which statement best explains the change that must happen at the molecular level? A. The molecules move more quickly and their average kinetic energy increases. B.

A 2-column table with 3 rows. The first column labeled mechanical waves has entries ocean water, light waves, earthquake waves. The second column labeled electromagnetic waves has entries sound waves, radiation waves, X-ray waves.

Which of these changes do not involve forming or breaking chemical bonds? A. burning and melting B. rusting and cutting C. burning and digesting D. boiling and melting

A sample of cesium metal reacted completely with water, evolving 48.1 ml of dry H2 at 19C and 768 mmHg. what is the equation for the reaction? what was the mass of cesium in the sample?

Who discovered Oxygen element

Calculate the molarity of kcl in the solution if the total volume of the solution is 239 ml.

Iron has a density of 7.86 g/cm3. Calculate the volume (in dL) of a piece of iron having a mass of 4.77 kg.

Why is the data for water different from the elements, hydrogen and oxygen?

The sources of errors in the kinetic experiment are: a. Tools b. Personal c. Method d. All of the above

What must be true when work is done?