Is 2mg+o2 = 2mgo a redox reaction

How can a substance gain energy and still be frozen

Which energy conversion occurs when a battery-operated alarm clock goes off? A) Electrical, chemical energy, sound energy B) Light energy, electrical energy, sound energy C) Potential energy, kinetic energy, potential energy D) Chemical energy,

The step that usually comes last in solving numeric problems is _. A) Calculate, B) Measure, C) Evaluate, or D) Analyze

How many of the following are compounds? H2O, N2O4, NaOH, MnO2, HF

A change in color, such as rusting of metal, is a sign that ... A.) A chemcal change is taking place. B.) A physical change has just taken place. C.) Oxygen is present D.) Organic chemicals are present

Oxygen (O) will have chemical properties most like: sulfur (S). nitrogen (N). hydrogen (H). fluorine (F).

List the five major pollutants in the United States

What mass of MgCl2 was produced from 5.87 of Mg (OH) 2 reacting with 12.84 g of HCl? Identify the limiting and the excess reactants.

Use a Punnett square to predict the cross of a homozygous tall parent with a homozygous short parent, if tall is dominant over short. What will be the phenotype of the offspring described in this example. Select one: a. some tall some short b.

Write the mathematical expression that allows you to solve for the oh - concentration in water when you know only the h3o + concentration.