Is a match getting set on fire a chemical change?

The student observes that the blue color becomes less intense as the cell operates. State one inference that the student can make about the concentration of the Cu2 + ions based on the change in intensity of the color of the Cu (NO3) 2 (aq) solution

Sulfuric acid is a component of acid rain formed when gaseous sulfur dioxide pollutant reacts with gaseous oxygen and liquid water to form aqueous sulfuric acid. part a write a balanced chemical equation for this reaction.

The ionic bond of sodium chloride is formed when

Conduction can occur within a single substance, but parts of the substance must have which property? a. different temperatures B.) different textures C.) different particle sizes D.) different colors

A 8390 g/hr stream of liquid methyl alcohol, also called methanol, (CH_3OH) at 6.20 atm and 24.0 degree C was held at constant pressure, vaporized and brought to 337.0 degree C.

A. Write an equation for determining the number of moles of NaOH that are added to the flask based on [NaOH] and volume of NaOH titrant (mL NaOH): B.

Is romano cheese an element, compound, homogeneous mixture, or heterogeneous mixture?

Which of the following is an appropriate food storage method

Why should your disposal of excess magnesium take place in a fume hood? (choose all that apply) Group of answer choices The quench released hydrogen gas, which is flammable and explosive The quench is highly exothermic and might cause the solvent to

For the chemical equation SO2 (g) + NO2 (g) SO3 (g) + NO (g) SO2 (g) the equilibrium constant at a certain temperature is 3.00. At this temperature, calculate the number of moles of NO2 (g) that must be added to 2.30 mol SO2 (g) in order to form 1.