Any factor that causes molecules to collide more frequently speeds up the reaction rate. This is achieved by an increase of the reactants concentration, surface area, raised temp. , raised pressure of gaseous reactant, or an addition of catalysts to the reactant
The earths crust and the skin of rock on the outer layer of earth.
Helium has an atomic number 2 and an atomic weight of 4 grams per mole. It is one of the noble gas (which means that it is stable) and also a nonmetal. Its electron configuration is 1s2. There are energy levels and they are s, p, d and f. The s level means that its maximum number of electrons is only 2.
Answer:
maybe 2.000
Explanation:
if you round up i it is probably 2.0000
Answer:
According to biological spices concept, organisms belong to the same spices if they can interbreed viable, fertile offsprings.
