How many pi bonds are there in NO3-

If 2.0 ml of 6.0m hcl is used to make a 500.0-ml aqueous solution, what is the molarity of the dilute solution?

The activiation energy required for a chemical reaction can be decreased by? A) increasing the surface area of the reactant. B) increasing the temperature of the reactant. C) adding a catalyst to the reaction. D) adding more reactant

2. Why was Newland's periodic table rejected?

If 8.7 g of butanoic acid, c4h8o2, is dissolved in enough water to make 1.0 l of solution, what is the resulting ph? a table with ka values can be found here.

Complete the reaction (NH4) 2SO4 (aq) + BaCl2 (aq)

What is the energy of a photon of green light with a frequency of 5.76 times 10 to the fourteenth s to the negative one

Which statement describes a physical change? a. A carton of milk souring b. A piece of silver flatware tarnishing c. Dry ice subliming into carbon dioxide d. Two clear solutions forming a precipitate when mixed

What are two types of local winds?

For a given reaction, adding a catalyst increases the rate of the reaction by (1) providing an alternate reaction pathway that has a higher activation energy (2) providing an alternate reaction pathway that has a lower activation energy (3) using

An element which forms an oxide that dissolves in water to form an acidic solution.