Why do elements in the same group have similar properties and how does this affect bonding capabilities?

Many insulating materials contain spaces filled with air because air is what type of material

Thomsons experiments were significant in that they questioned

What are the three majors factors which affect weather?

When 0.313 g of Mg is heated strongly in a nitrogen (N2) atmosphere, a chemical reaction occurs. The product of the reaction weighs 0.433 g. Calculate the empirical formula of the compound containing Mg and N. Name the compound.

Find the molality of the solution if 42 grams of lithium chloride (LiCl) are dissolved in 3.6 kg of water. 0.275 m 11.7 m 0.990 m 0.857 m

What mass of potassium chlorate would contain 40grams of oxygen?

Identical forces act for the same length of time on two different masses. The change in momentum of the smaller mass is A) smaller than the change in momentum of the larger mass, but not zero. B) zero.

How many nuclei of 238 92 U 92 238 U remain in a rock if the activity registers 290 decays per second? (Note that the half life of Uranium-238 is 4.468x109 years)

A base can neutralize an acid. true or false

Hydrochloric acid (12.0 ml of 0.233 m) is added to 296.0 ml of 0.0579 m ba (oh) 2 solution. what is the concentration of the excess h + or oh - ions left in this solution?