An elementary classroom models a volcanic eruption by mixing vinegar and baking soda. Which of the following observations is not evidence of a chemical reaction?
Select one:

Gas bubbles formed after the vinegar and baking soda are combined.

After the substances are combined, a salt and water were formed.

The mass of the combined substances is greater then the masses of the substances separately.

The temperature of the combined vinegar and baking soda is less than the substances separately.

1.aluminum chloride (alcl3), and sodium hydroxide (naoh) can react to form aluminum hydroxide (al(oh)3) and sodium chloride (nacl).    you have 13.4 g of aluminum chloride and 10.0 g of sodium hydroxide. answer the following questions: •what is the balanced equation for this reaction? •if you use all 13.4 g of aluminum chloride, how many grams of aluminum hydroxide can be formed? work must be shown to earn credit •if you use all 10.0 g of sodium hydroxide, how many grams of aluminum hydroxide can be formed? work must be shown to earn credit •how many grams of aluminum hydroxide will actually be made?     which reagent is limiting? explain your answer.

Explain how the integumentary system plays a crucial role in the ability to maintain homeoestasis

Acamcorder has a power rating of 17 watts. if the output voltage from its battery is 7 volts, what current does it use?units: