1. The mass of a proton is approximately equal to the mass of

A) an alpha particle C) a positron

B) a beta particle D) a neutron

The diameter of a human red blood cell is 0.000006m write this number using scientific notation a10b

A concentrated koh (mw = 56.105 g/mol) solution is 45.0 %wt koh and has a density of 1.45 g/ml. How many milliliters of the concentrated koh solution must be diluted to obtain 250.0 ml of 1.20 m koh?

What is nuclear medicine

What are the four types of pressure membrane recognised for the treatment of water?

Which value is a measure of density? A) 5 m3 B) 6.8 g/cm3 C) 7.0 kg D) 10 m/s

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