An element has 4 protons, 5 neutrons, and 4 electrons. What is the atomic mass of the element?

4

5

8

9

What is the molar mass of copper (Cu)

in a chemical change how does the total energy of the reactants compare to the total energy of the products

why is it much easier for group 14 elements to become stable by sharing instead of transferring electrons9

The noble gases are located in which column of the periodic table? a. 1 b. 6 c. 9 d. 18

Como el sistema esqueletal ayuda a mantener el homeostasis en el cuerpo

What are facts on osmosis?

If a map of temperature displayed stripes parallel to the equator with equal temperatures at equivalent distances north and south of the equator, it would mean that only blank affected temperature.

What is the term for the amount of salts in water? Evaporation Evaporation Salinity Thermocline Density

In an acid-base titration, of 20 ml of a m HCI solution with 1 m NaOH. How many ml of NaOH are needed

Which of the following is not a source of air pollution related to human activities