Which of the following is not example of chemical change

A candle burning

B cake baking

C glass breaking

D a nail rusting

While working on a pH lab, Alex spilled strong acid all over the table. What should Alex's first step be to remedy this problem? A) Inform his teacher. B) Wipe it up with a paper towel. C) Light it on fire to burn it off the table.

Determine the grams of oxygen gas that reacts with 1.75 moles of hydrogen gas

Convert 9.78 gallons toliters

Which of the following best describes an orbital? a) a space in an atom where an electron is most likely to be found b) space where electrons are unlikely to be found in an atom c) space which may contain electrons, protons, and/or neutrons d)

How many significant figures does 16.00 contain

The balanced equation below represents the reaction between magnesium metal and hydrochloric acid to produce aqueous magnesium chloride and hydrogen gas. Mg (s) + 2HCl (aq) = = > MgCl2 (aq) + H2 (g) A piece of Mg (s) has a volume of 0.

What is the molarity of a solution prepared by dissolving 33.4 g of sodium chloride in some water and then diluting the solution to a volume of 300.00 mL?

Think about how pressure relates to volume and how gas behavior would change in different volumes. Which of the following will have the largest positive value for Sº? A) 1 mole of helium gas at 1 atm pressure.

Does a reaction stop once it has reached equilibrium? Explain

8 l of water at 19 ∘c are mixed with 1.1 l of water at 47 ∘c in an insulated container. what is the final temperature of the system? express your answer in ∘c