The formation of covalent chemical bonds is

a. thermoneutral.

b. exothermic.

c. endothermic.

d. slow

What do the objects in motion have in common

If you make a solution by dissolving 1.0 mol of Fecl3 into 1 kg of water how would the osmotic pressure of this solution compare with the osmotic pressure of a solution that is made from 1.0 mol of glucose in 1 kg of water

A material was cooled from 100°C to 40°C. What is the temperature change? A - 40°C B 60°C C 40°C D - 60°C

Magnesium reacts with aluminum chloride. if you have 40g of each, how many grams of Al can you make? what is the LR? how much excess is left over after the reaction takes place

How much heat is needed to raise the temperature of 6g of water by 17oC?

Why can two igneous rocks have the same minerals but different names?

Where do the heaviest elements in our solar system come from?

Four students presented different analogies to describe the formation of an ionic bond. Student A: A tug of war between seven middle school students and a high school student Student B: A small dog and a big dog tugging at a bone with equal strength

Chemical reactions occur when molecules or atoms collide so that the bonds between atoms break and new bonds form. breaking the bonds of the reactants requires energy; whereas, bond formation releases energy.

Calculate the volume of a 0.323-mol sample of a gas at 265 K and 0.900 atm.