What is the mass of an atom that has 4 protons, 5 neutrons, and 4 electrons?

Which (metals or nonmetals) are most likely to give away electrons?

Five elements named after color

According to the kinetic-molecular theory, particles of a gas Select one: a. attract each other but do not collide. b. repel each other and collide. c. neither attract nor repel each other but collide. d.

How can an object weight change on a small planet

A 100.00 ml of volume of 0.500 M HCl was mixed with 100.00 ml of 0.500 M KOH in a constant pressure calorimeter. The initial temperature of individual acid and base was 23.0 oC. The final temperature after mixing was 25.5 oC.

A light-year measures the distance a light beam can travel in one year. One light-year is equal to 9 500 000 000 000 kilometers.

The first ionization energy, e, of a potassium atom is 0.696 aj. what is the wavelength of light, in nm, that is just sufficient to ionize a potassium atom? values for constants can be found here.

A gene is a to a chromosome as (A) a pea is to a pod (B) a front to a back (C) a bike is to a car (D) a building is to a window

How are you enjoying this weather? (i need good reasons}

In today's experiment, some lab students let their chromatograms elute slightly longer than others. If one student's solvent front traveled to 9.80 cm, and another student's solvent front traveled 8.