Which change of state is shown in the model?

A. condensation

B. evaporation

C. sublimation

D. deposition

Explain why elements in the same group of the periodic table have similar chemical properties

What structure does a eukaryotic cell have that a prokaryotic cell does not?

Scientist call an organism that has two different alleles for a trait

Boron occurs naturally as two isotopes. What is the difference between these isotopes?

One kilogram (1 kg) of a 2.5% ki solution

What's the symbol for nitrogen

A student performs the reduction of 4-nitrobenzaldehyde (151.12 g/mol) with sodium borohydride (37.83 g/mol) in the presence of ethanol. The student mixes 4.13 g of 4-nitrobenzaldehyde with 0.700 g of sodium borohydride and obtains 1.

Which of the following subatomic particles always has a positive charge?

Which term is described as a long, narrow depression in the ocean floor?

Which is the weakest Bronsted Base? A) CF3CH2S B) CH3CH2NH^- C) CCl3CH2CH2O^- D) CH3CH2^-