True or False: Heterotrophs obtain food molecules for energy and nutrition by eating heterotrophs or by eating and absorbing autotrophs

In a chemical equation, the coefficients represent the ...

Rutherford's experiment with gold estimate the radius of a gold atom to be approximately 1x10^-9 cm. Suppose the radius of the nucleus is the same as a basketball.

A solid sample of a compound a liquid sample of the same compound are each tested for elecrical conductivity. Which test conclusion indicates that the compound is ionic?

Scientists have spliced the DNA of certain cabbage species with that of a scorpion, causing the cabbage leaves to have a very tiny amount of poison, just like the scorpion produces.

Iron forms rust, expressed as: Fe2O3. Using information from the Periodic Table, what is the mass of one mole of Fe2O3? A. 71.85 g B. 143.70 g C. 159.70 g D. 319.40 g

What is a physical change? A change in matter from one form to another without becoming a new substance. A change in matter that results in a chemical reaction. A change in matter that results in the smallest unit of a compound.

You are in the room with several objects, the temperature in the room is 21 celcius, what can you assume about the temperatures of the objects in the room?

If a sample contains 74.0% of the R enantiomer and 26.0% of the S enantiomer, what is the enantiomeric excess of the mixture?

In a solution, the solvent particles are attracted to the solute particles by: a) ion/dipole forces b) dipole/dipole forces c) van der Waals forces d) any or all of these forces

Which soil layer contain the most humnas