How to find protons, neutrons, electrons of an element.

When the concentration of hydrogen lons equals the concentration of hydroxide ions, is called the?

Two moles of lithium has a mass of 13.88g. true or false

Explain why 5.00 grams of salt does not contain the same number of particles as 5.0 grams of sugar

John pushes his brother Danny on a skateboard. John applies a force of 39 N and Danny's acceleration is 0.9 m/s2. What is the combined mass of Danny and his skateboard? A. 43 kg B. 48 kg C. 31 kg D. 35 kg

Red blood cells contain an enzyme called carbonic anhydrase, which catalyzes the reversible reaction whereby carbon dioxide and water are used to form carbonic acid.

How does the structure of the stigma aid in pollination?

A sample of fluorine gas occupies 810 milliliters at 270 K and 1.00 atm. What volume does the gas occupy when the pressure is doubled, and the temperature increases to 400 K

Which category does the ion PO43 - belong to? A. monatomic cation B. monatomic anion C. polyatomic anion D. polyatomic cation E. monatomic ion

What is the total number of oxygen atoms represented in the formula na2c03.10h2o?

Atoms of metallic elements tend to A) gain electrons and form negative ions B) gain electrons and form positive ions C) lose electrons and form negative ions D) lose electrons and form positive ions