The science of classifying organism and assigning them

Physical Meaning of pKa Which of the following aqueous solutions has the lowest pH: 0.1 M HCl; 0.1 M acetic acid (pKa = 4.86); 0.1 M formic acid (pKa = 3.75) ?

Sound is not part of a electromagnetic spectrum because A: Sound is not a type of energy wave B: Sound is not a type of electromagnetic radiation C: Sound does not have a wavelength D: Sound does not have a frequency

A chemical reaction can start when enough activation energy is added to the reactants. Do you think the activation energy for chemical reactions in living things is high or low / Explain your answer

Your task is to create a presentation to explain the transformation of a substance as it changes phases. You may choose to write a story or create a comic strip.

Choose the correct statement regarding the behavior of water. a. The water phase with the highest heat capacity is gas vapor. b. The liquid-to-vapor phase change of water requires less energy than the ice-to-liquid phase change. c.

Does the density of ice affect the melting rate of ice, or does adding objects affect melting rates? I'm going to need evidence of some kind. If not, that's okay.

The boiling of water results in a physical change in matter form A. sold it liquid B. gas to solid C. solid to gas D. liquid to gas

Write the net ionic equation for the reaction of zinc metal with aqueous iron (II) nitrate. Include physical states.

Give an example of a "balanced force" and explain what makes it a balanced force.

What type of bond exists in a molecule of hydrogen iodide and what is the electronegative difference