An ice cube melts and then the liquid water evaporates. Which statement is true about the mass of water that goes through each change of state?

The electronegativity of manganese is 1.6, sulfur is 2.5, oxygen is 3.5, chlorine is 3.0, and bromine is 2.8. With which element will manganese react to form ionic compounds? sulfur bromine oxygen chlorine

How does a catalyst work? A) it shifts the reaction toward the products B) it changes the pressure of the products C) it increases the temperature of reactants D) it increases the temperature of the products E) it decreases the activation energy

In the reaction 2H2O (l) + 2Cl - (aq) → H2 (g) + Cl2 (g) + 2OH - (aq), which substance is oxidized? A. H2O B. Cl C. H D. OH E. None of the Above (This is not a redox reaction.)

Meaning of particle motion

Balancing this equation 2 C2H2 + O2 CO2 + H2O

Express the value of exactly 15 centimeters to three significant figures.

A solution is made by completely dissolving 90. grams of kno3 in 100 grams of water in a beaker. the temperature of this solution is 65 degrees celsius.

A 10g mass of krypton occupies 15.0 l at avpressure of 210 kpa. find the volume

What does a substance in solid fase has

What are the three requirements for an effective collision