An electrically neutral atom of gallium has 31 electrons and 39 neutrons. What is the mass number of the atom?

What's the size of a astatine Atom compared to a tellurium Atom

Ow many different elements make up beryllium sulfite, BeSO3?

Energy may not be created or destroyed, but it may be converted into different types. Categorize the examples below as either Potential Energy or Kinetic Energy. Some examples will fall into neither category.

Which of the following is a way your body fights a bacterial infection? Fever Shivers Sweats Increased heart rate

Which of the following is a result of the greenhouse effect? The greenhouse effect is causing the sea level to rise. The greenhouse effect is melting the polar ice caps.

Is the mass of an atomic nucleus greater or less than the sum of the masses of the nucleons composing it? Why don't the nucleon masses add up to the total nuclear mass?

Consider the equilibrium system below. If the system is at dynamic equilibrium, which statement is true? a. Sublimation of the NH4CI crystals stops. b. Solidification of the NH4CI vapors stops. c.

What happens to the atomic radius as the atomic number increases down and why

What is the oxidation number of sulfur in H2SO3? a. + 3 b. + 1 c. + 2 d. + 4

A) Write the formula of the conjugate base for acid HF. b) Write the name of the conjugate base found in part A.