How many moles of iron are present in 3.15 x 1023 atoms of iron?

Thursday: Atoms 1) Smallest Unit of matter:
 2) Center of atom:
 3) positive particles in center of atom:
 4) neutral particles in center of atom:
 5) negative particles surrounding the center of the atom:
 6) electrons in the outermost energy level.

Explain equilibrium based on collision theory.

The periodic table below shows the state of matter of elements at standard temperature and pressure. Based on the periodic table above, which of the following elements is a gas at standard temperature and pressure? A. K B. Ca C. Br D. Ar

What is the cost of 1.5 pound of sugar if sugar costs $1.37 per 5.0 pounds?

Find the empirical formula of a compound containing: 19.32% Ca, 34.30% Cl, and 46.38% O

A 50 W engine generates 50 J of energy. How long did it run for? A. 10 s B. 1 s C. 5 s D. 100 s

What is the mass (grams) of 9.89 * 10^24 moles of (cho30h) ?

Which of these elements is unlikely to have a reaction with any element or compound? rubidium (Rb) magnesium (Mg) cobalt (Co) argon (Ar)

Select the single best answer. which of these factors influence buffer capacity? conjugate acid-base pair concentration of buffer components buffer range ph of the buffer pka of the acid component

Oxygen (O) will have chemical properties most like: sulfur (S). nitrogen (N). hydrogen (H). fluorine (F).