Which substance has the lowest density?

Select one:

a. H2O (l)

b. H2O (g)

c. H2O (s)

d. H2O (aq)

Which of the following is NOT a form of energy? a. electrical b. thermal c. nuclear d. magnetic

Complete the reactions to show how butanoic acid may be converted to butanal.

The discovery of penicillin is attributed to which area of chemistry

49 grams of sulfuric acid, H2SO4, is dissolved in 1 liter of solution. Determine the molarity (M).

Select True or False from the pull down menus for the following statements. During fusion (melting), no heat has to be added to make the phase change under constant pressure.

A 10 chunk of metal has a specific heat of 0.25 J/g ºC. The temperature is changed from 10ºC to 45ºC. How much heat is required?

In this reaction what is the correct coefficient for sodium chloride? pb (no3) 2? nacl → pbcl2? nano3

Classify each of the following as a path function or a state function. work energy distance traveled enthalpy heat

Flammable materials like alcohol should never be dispensed or used near True or False

The diagram to the right shows energy for two reactions, A and B. Which reaction has the higher Gpx?