The following chemical equation is not balanced: C3H8 + O2 CO2 + H2O When this chemical equation is correctly balanced, what is the coefficient of the carbon dioxide molecule?

Pure quartz and the gemstone amethyst are nearly alike chemically. what physical property would be used to tell them apart

List three ways the rate of solvation of sodium chloride in water may be increased

The density of ice is 917 kg/m3. The density of salt water is 1029 kg/m3. A mass of ice is 2.55 x 1013 kg. Calculate the volume of salt water that has the same mass as 278 km3 of ice.

The action of a catalyst can be explained in the following manner: The catalyst lowers the temperature of the reactants. The catalyst takes no part in the reaction but serves as a buffer between reactants and products.

1. Put the layers of Earth in order from densest to least dense. A. Crust, Mantle, Inner core, Outer Core B. The inner core, Mantle, Outer core, Crust C. Crust, Mantle, Outer core, Inner Core D. The inner core, Outer core, Mantle, Crust 2.

A piece of metal with a mass of 121 g is placed in a 50 mL graduated cylinder. The water level rises from 20. mL to 35 mL. What is the density of the metal?

Archimedes principle of buoyancy

Which characteristics belong to all members of the domain Eukarya? Check all that apply. have a cell wall are unicellular are multicellular have a nucleus or nuclei have a cell membrane

What is the total number of atoms in one unit of back

Is filtration is an effective method to purify water for drinking?