Substance a has a density of 3.0 g/cm3 and substance b has a density of 4.0 g/cm3. in order to obtain equal masses of these two substances, the ratio of the volume of a to the volume of b will be equal to

If the pH of an acid is 4.0, what is the pOH?

Calculate the mass of potassium sulfate needed to produce 115ml of a 1.34M solution (molarity problem)

What periodic trends can you observe from the elements on the periodic table

Why are the elements fluorine (F), chlorine (Cl), and bromine (Br) all found in the same group within the periodic table? A) They all exist as gases at 20°C). B) They all react with the noble gases. C) They have the same chemical properties.

Acetyl-coa and succinyl-coa are both high-energy thioesters, but their chemical energy is put to different uses. explain how the chemical energy is used in the two cases.

The total energy of all the particles in a substance is called

What is the salt produced when sulfuric acid (H2SO4) reacts with potassium hydroxide (KOH) ? a) SO4K b) K2SO4 c) KSO 4 d) H2O

How many elements typically join together to form compounds

Which salt is produced when copper oxide reacts with hydrochloric acid? a. Chloride oxide c. Copper chloride b. Copper oxide d. Hydrochloride

5. How did Moseley solve the problem of the elements in Mendeleev's table that did not fit the pattern?