Al + 02 = A1203

1. What coefficient values will balance the reaction shown above? (Show your work for each set

of coefficients.)

A 2,3, 2

B 2, 1, 1

C 4,3,2

D 4,2,3

38 Which formulas represent one ionic compound and one molecular compound? (1) N2 and SO2 (2) Cl2 and H2S (3) BaCl2 and N2O4 (4) NaOH and BaSO4

A rapid reaction is distinguished by A rapid reaction is distinguished by having a small value of activation energy. having a large value of activation energy. being unaffected by catalysts. having a large heat of reaction.

Write a balanced chemical equation for dissolving calcium chloride in water.

Several narrow linear bloodstain patterns are found on a wall adjacent to one where a body was found the droplets were elongated and about 1-4 mm in diameter which weapon most likely caused this blood spatter pattern A) Brass knckles on a fist B)

Where did the largest tsunami form? O Sumatra Japan Chile Alaska

What is the molality of a solution containing 100 grams of glucose (C6H12O6, molar mass = 180 g/mol) dissolved in 2.5 kg of water? 0.22 m 72 m 7200 m 40 m

A battery is constructed based on the oxidation of magnesium and the reduction of cu2+. the initial concentrations of mg2 + and cu2 + are 1.2*10-4 m and 1.44 m, respectively, in 1.0-liter half-cells. how long can the battery deliver 5.

A buffer solution is made that is 0.417 M in and 0.417 M in. If for is, what is the pH of the buffer solution? pH = Write the net ionic equation for the reaction that occurs when 0.120 mol is added to 1.00 L of the buffer solution.

BaCl2 (aq) + AgNO3 (aq) → Express your answer as a chemical equation. Enter noreaction if no precipitate is formed.

Make a list of physical changes and chemical changes that you observe or see effects of in the school