What leads to the development of a theory

Periodicity is best defined as: the fact that elements increase in atomic mass in a regular way the repeating nature of physical and chemical properties with atomic number the regular growth of atomic size with atomic mass the consistent decrease of

A fault is a. a deep crack in the Earth b. the place where continents meet c. the boundary between a mountain and a valley d. the low place between two mountains

A volume of 80.0 mL of aqueous potassium hydroxide (KOH) was titrated against a standard solution of sulfuric acid (H2SO4). What was the molarity of the KOH solution if 13.7 mL of 1.50 M H2SO4 was needed? The equation is

The prefix 'kilo-' means a thousand. 1 kilogram=1,000 grams How many kilograms is 527 grams? Round your answer to the nearest tenth of a kilogram. I get 0.54 im i correct

Suppose you mast out 6.39 g of water how many moles would you have

2H2S (g) 2H2 (g) + S2 (g) Kc = 1.67 * 10 ^-7 at 800 C A 0.500 L reaction vessel initially contains 0.0125 mol of H2S at 800 C. Find the equilibrium concentrations of H2 and S2.

An atom has an atomic number of 9 a mass number of 19 and an electron configuration of 2-6-1 explain why the number of electrons in the second and third shells shows that this is in an excited state

How can a chemical reaction be sped up? Pack in more of the reactant to increase the_.

How does a mixture of benzoic acid and benzaldehyde can be isolated separately by extractions?

What is a compound? a) a combination of two or more substances that are not chemically combined b) a combination of two or more elements that are combined in a certain ratio