An unknown substance can be identified by

its mass.

a flame test

its density

B and C

What is the change in electrons for nitrogen in the following reaction? S + NO3 - - > SO2 + NO A. Gain 2 electrons B. Gain 3 electrons C. Lose 2 electrons D. Lose 3 electrons

A carbon - 12 atom has a mass defect of 0.09564 Amy what is its nuclear binding energy

The density of ethanol is 0.789 g/cm^3 at 20 degrees C. What volume of ethanol has a mass of 15.5 grams?

Provide at least three indicators of a chemical change that are present in burning a piece of paper.

What things contain pva besides face masks

How does temperature affect the rate of a reaction? A. Increasing the temperature decreases the potential energy of the reactants. B. Increasing the temperature gives the molecules more kigetic energy C.

Who thought everything was made from fire, earth, air, and water? A. Ancient Egyptians B. Democritus C. Socrates D. Aristotle SUBN

A 52.8-g sample of glucose (a nondissociated, nonvolatile solute with the formula C6H12O6) is dissolved in 158.0 g of water. What is the vapor pressure of this solution at 100°C?

When making a solution of sugar and water, you begin with a 500 ml beaker, 10 grams of sugar, and 400 ml of distilled water. which procedure will allow you to dissolve the most sugar in the least amount of time?

What is the definition of covalent bond?