What type of energy do batteries have?

What is an ionic compound that contains only non metallic elements?

The initial explanation for a phenomenon prior to experimentation is called?

When electrons have moved from one element to another, what type of bond has formed?

What is the concentration of cl - ions that results from mixing 0.140 l of 0.25 m nh4cl with 0.380 l of 0.75 m cacl2?

How far away from the central bright fringe on the screen is the fifth bright fringe (not counting the central bright fringe) ?

At what pH do you think acids become too dangerous to touch? Basis? Explain your answers.

How do endothermic processes differ from exothermic processes

Before a race, an athlete warms up by jogging around the track shown below at a constant rate of 2.3 m/s. What statement best describes his motion as he jogs around the curved part of the track?

What physical property is changed when a waitress pours coffee from a pot into four mugs? temperature density volume color

Calcule o calor especifico do estanho sabendo que foram necessarias 100 cal para elevar em 20ºC a temperatura de 100 g de estanho