How many valence electrons do nitrogen atoms have

Sulfuric acid is essential to dozens of important industries from steelmaking to plastics and pharmaceuticals. More sulfuric acid is made than any other industrial chemical, and world production exceeds 2.0 x 10 kg per year.

What trend does the first ionization energy follow going across the periodic table?

Which element is always present in a combustion reaction?

What is thin-layer chromatography? Group of answer choices a technique that separates amino acids on the basis of pKa of α-+NH3 values a technique that separates amino acids on the basis of their solubility in water a technique that separates amino

A catalyst lowers the activation energy for both the forward and the reverse reactions in an equilibrium system, so it has no effect on the equilibrium position of a system. True False

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