2. what is the formula weight of (nh4) 2so4? 118 amu 116 amu 100 amu 132 amu

A metal has higher reactivity than mag esoum where would the metal be on a periodic table

Which best describes how the chemical reaction that produces nitrogen gas inflates the airbag? A. The sodium azide quickly breaks apart. B. The sodium azide suddenly melts. C. The sodium azide rapidly forms a precipitate.

What is thought to happen when electrons jump from a higher level to a lower level

How do atoms usually combine? In a way that makes each atom less stable. In a way that makes each atom more stable. In a way that increases the number of valence electrons. In a way that decreases the number of valence electrons.

Is the universe an isolated system?

What is the example to the word camouflage

Given the reaction 2NaOH + H2SO4 = Na2SO4 + 2H2O, what is the total number of grams of NaOH needed to react completely with 196 grams of H2SO4

The mass flow rate of gasoline leaving a refinery is 1610 kg/min. The specific gravity of a gasoline is 0.700. A retail gasoline pump is able to fill a 20.0 gallon automobile tank in 1.80 minutes.

Calculate the solubility of cux (ksp=[cu2+][x2-]=1.27*10-36) in a solution that is 0.190 m in nacn.

An atom has seven valance electrons which element could have this type of atom