A train travels 99 km in two hours and then 72 km in two hours what is it's average speed

Describe how activity within the earth results in earthquakes

Nuclear fusion differs from nuclear fission because nuclear fusion reactions (1) form heavier isotopes from lighter isotopes (2) form lighter isotopes from heavier isotopes (3) convert mass to energy (4) convert energy to mass

The spectator ions in the reaction between aqueous chloric acid and aqueous barium hydroxide are

The formula for ammonium carbonate:

Which type of radioactive particle (s) has/have been emitted in the following equation? 214/84 PO - > 210/82 Pb + ? alpha particle only beta particle only alpha and beta particles alpha and beta particles and gamma radiation

How are real gases different from ideal gases?

Which one doesnt belong in the list below? A. a meter B. one liter C. One centimeter D. one kilometer

Which elements did curies discover

When rubidium metal is exposed to air, two atoms of rubidium, Rb, combine with one atom of oxygen. If 1.98 grams of rubidium is exposed to air, what will be the mass of the product in grams

Fission reactions can get of of control without what taking place?