How much percent of energy presents at one level is available to the next trophic level

What type of reaction occurs between amines and carboxylic acids at room temperature?

Give an example of each type of intermolecular forces (dispersion, dipolar, hydrogen bonding) via the structural formula of a compound.

The ball rolling across the floor keeps moving until it is stopped by friction. this example demonstrates

What is a single part of a compound?

Nitrogen is a group 15 element. What does being in this group imply about the structure of the nitrogen atom? O A. Nitrogen has 15 valence electrons. OB. Nitrogen has 15 neutrons. OC. Nitrogen has 5 valence electrons. D. Nitrogen has 5 neutrons.

The water level in a graduated cylinder stands at 20.0 ml before and at 26.2 ml after a 16.74 g metal sample is lowered into the cylinder. what is the density of the sample. what metal is the sample most likely to be

An electrolyte is a substance that will conduct electricity when dissolved in water. a substance that conducts electricity well is a strong electrolyte. a substance that conducts electricity poorly is a weak electrolyte.

Energy is required to produce a chemical change during (1) chromatography (2) electrolysis (3) boiling (4) melting

What is the definition of colorie

How does a solid differ from a liquid? b. how does a liquid differ from a gas? c. how is a liquid similar to a gas? d. what is a plasma?