Element X is a solid that is brittle, lacks luster, and has six valence electrons. In which group on the Periodic Table would element X be found

A scientist investigates a new substance and finds that at 35° C, 146.2 grams will dissolve in 200.0 grams of water. Which similar experiment could be used to support the scientist's results?

8. A student performing an investigation of chemical reactions mixes two aqueous solutions and observes a change in color.

What is a solubility curve

You see a coin at the bottom of a fountain of water but when you reach for it it is in another place than it appears to be

Heat that flows by conduction is the transter of thermal energy between substances in contact. What must occur for this to happen? The two systems must be the same temperature, The two systems must not be touching each another.

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?