How do you detemine the charge of an element based on jts valence electrons

How to test whether particle is a wave or particle?

19. What is the density of a 16.39 g sample of a liquid whose volume reads 18.00ml? This is probably simple, but my brain ain't working at 12:00 am

If an object has a density of 1.35 g/ml, will it float or sink in water?

When a 6.50-g sample of solid sodium hydroxide dissolves in 100.0 g of water in a coffee-cup calorimeter, the temperature rises from 21.6 degrees C to 37.8 degrees C. Calculate delta H (in kJ/mol NaOH) for the solution process.

At room temperature which of the following is the most compressible

Potassium ions (k+) have a positive charge. What happens to a potassium atom electrons when it becomes an ion

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