Which of these is not an official si unit of measure?

a. kelvin

b. degree celsius

c. secondd. liter

How are pennies and isotopes different

Basic molecules contain more ... a hydrogen ions (H+). b water molecules. c hydroxide ions (OH-). d oxygen atoms.

Chlorophyll pigments are separated using paper. what is the stationary phase in this experiment

Does sound travel faster in a warm room or a cold room? Explain your answer. Sample Response: Sound travels faster in a warm room because temperature affects the speed of a wave.

Which describes the two cells formed through mitosis?

A student noticed while doing the neutralization experiment that the calorimeter kept getting warmer. how would this error affect the final calculation for the δhneut of each reaction? would it be overestimated, underestimated or remain unaffected?

A solution contains 45 grams of nitrogen gas and 40 grams of argon. What is the mole fraction of argon in this solution?

How is an animal cell related to tissue and organs

Predict the precipitate produced by mixing an Al (NO3) 3 solution. write the net ionic equation for the reaction. include the states of matter

Identify the precipitate (if any) that forms when KOH and Cu (NO3) 2 are mixed