Calculate the number of atoms in 23 g of sodium (Na).

Which substance has polar covalent bonds? which substance has polar covalent bonds? n2 bao f2 so2?

A substance has a higher temperature when its particles have a higher average kinetic energy. Imagine two different substances that are both pure, meaning they each contain only one type of matter. Each substance has a different temperature.

Earthquakes happen when rocks bend and snap back in process called

For the reaction: h2nnh2 (aq) + h2o (l) ⇌ h2nnh3 + (aq) + oh - (aq) determine the conjugate base of the acid?

Often on a topographic map, every fifth contour line is darkened. What is this line called?

Which pair of elements would combine to form an ionic compound? а b sodium and calcium sodium and chlorine carbon and oxygen carbon and sulfur с d

How many moles are there in 545g of Fe2O3?

How are magic minerals different from Felsic minerals? A. Mafic minerals contains lower levels of iron and magnesium. B. Mafic minerals contain more dark-colored, high-density minerals C.

Which of the following gases in Earth's atmosphere would you expect to find as molecules and which as individual atoms? a. Nitrogen b. Oxygen c. Argon

A substance that does not conduct electricity as a solid but does conduct electricity when melted is most likely classified as (1) an ionic compound (2) a molecular compound (3) a metal (4) a nonmetal