A glass is filled with liquid. It is red on the top 3 inches and yellow on the bottom 4 inches. It is ... ?

A.) a mixture

B.) a pure substance

C.) homogeneous mixture

D.) heterogeneous mixture

Are natural gas, oil and coal are all considered to be fossil fuels?

Convert 88 kJ to calories

The balanced equation below represents a reaction. O2 (g) + energy = = > O (g) + O (g) 54 Identify the type of chemical bond in a molecule of the reactant.

What does the electron sea model for metals suggest? A) valence electrons drift freely around the metal anions B) valence electrons are anchored to specific metal cations C) valence electrons drift freely around the metal cations D) electrons idle

When a solid changes to gas, what is it called?

By titration it is found that 38.1 ml of 0.147 m naoh (aq) is needed to neutralize 25.0 ml of hcl (aq). calculate the concentration of the hcl solution.

How many molecules are in h2o2

Which metals are attracted to electromagnets? Check all that apply. -aluminum -cobalt -iron -copper -nickel

What is the density of an object having a mass of 8.0g and a volume of 25cm3

Calculate the [h+] in a solution that has a ph of 9.88.