How many moles of Calcium are in a sample of 40g?

Many esters have characteristic odors. Methyl salicylate exhibits a pleasant wintergreen odor. This ester can be prepared from salicylic acid and methanol via Fischer esterification.

A sample of N2 gas occupying 800 mL at 20.0°C is chilled on ice to 0.00°C. If the pressure also drops from 1.50 atm to 1.20 atm, what is the final volume of the gas? Which equation should you use?

Most of the sulfur used in the United States is chemically synthesized from hydrogen sulfide gas recovered from natural gas wells.

A 58.5 g sample of glass is put into a calorimeter (see sketch at right) that contains 250.0 g of water. The glass sample starts off at 91.2 °C and the temperature of the water starts off at 19.

Rank the stability of the carbocations from most stable to least stable? 3º carbocation > 20 carbocation > 10 carbocation o all carbocations have the same stability O 1° carbocation > 20 carbocation > 3º carbocation 2° carbocation > 10 carbocation >

Most mutagens have what kind of an effect on an organism?

According to the hess's law, the enthalpy of solution is: δhsoln = δhsolute + δhsolvent + δhmix. considering dissolving a small drop of nonpolar pentane oil in water which term (s) in the equation will experience the largest enthalpy change.

Solve for x: ln x = 0.863. Report your answer to 3 significant figures.

What water activities might be easier to do in Lake Assal's salty water? What activities could be more difficult?

The suffix "-megaly in the term gastromegaly means: