Which acid has the formula HNO2?

What explains the observation that elements in the same chemical group have similar chemical properties?

T he thermochemical equation for the reaction between hydrazine, N2H4, and dinitrogen tetroxide is given as: 2N2H4 (2) N204 (1) 3N2 (g) + 4H20 (g), AHO-1049 kJ What is the corresponding thermochemical equation for this reaction when 6 mol of

True or false: In chemistry and physics, Dalton's law (also called Dalton's law of partial pressures) states that in a mixture of non-reacting gases, the total pressure exerted is equal to the sum of the partial pressures of the individual gases.

You buy a balloon at the grocery store and walk outside into - 10F temperatures. what happens to the balloon? the balloons temp increses the vol increases the vol decreases the vol stays the same

In a solution of brine (salt water), what is the salt? a solute a solvent a solution a reactant a product

Much of life on Earth is based in aquatic biomes. What property of water allows life to survive in liquid water?

A neutral atom of beryllium (Be) has an average mass of 9 amu and 4 electrons. How many neutrons does it have? 13 9 5 4

Calculate the maximum mass of carbon dioxide that could be obtained by adding excess hydrochloric acid to 15 g of calcium carbonate.

True or false: during dry weather, the water level in a small pond drops because of runoff.

Bradley hit a baseball with a bat. The baseball then hit a window and caused the window to break. Where did the energy that broke the window come from?