Which is an example of a colloid? a) a mixture that settles out b) a mixture that is separated by filtration c) a mixture that scatters light d) a salt and water mixture

Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.

Astring vibrates with a frequency of 10 hz. why can't a person hear the sound waves produced by the vibrating string, no matter how large the amplitude of the waves? out! this is homework and due tomorrow! you so much!

Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.