What is the empirical formula of a compound with 35.94% aluminum and 64.06% sulfur?

A.

AlS

B.

Al4S6

C.

AlS2

D.

Al2S3

E.

AlS3

A compound is known to contain 46.45% carbon and 20.61% oxygen by mass. each molecule contains two atoms of oxygen. what is the molar mass of this substance?

Classify each material as a polymer or a composite. plywood, plastic, concrete, fiber glass, paper, nylon

The name of the commonly used hardness scale is: specific gravity organic Mohs inorganic

A force that keeps objects in motion from going on forever

Which of the following is not an appropriate unit for power? A. horsepower B. watt C. joule/sec D. newton/sec

You heat 3.869 g of a mixture of fe3o4 and feo to form 4.141 g fe2o3. What is the mass of oxygen reacted?

What kind of waves do cellar telephones use to transmit amend recive signals

Which process is a physical change? A. iron rusting B. milk turning to curd C. water boiling D. paper burning E. hard water staining pipes

1. How much calcium oxide would be made by the thermal decomposition of 25 grams of calcium carbonate? CaCO3 - > CaO + CO2 2. How much oxygen gas can be produced through the decomposition of potassium chlorate (KClO3) if 194.

Ethanol contains the elements carbon, hydrogen, and oxygen. When ethanol burns, it chemically reacts with oxygen gas. C2H6O + O2 ethanol oxygen gas What elements will be present in the substances that are created when ethanol burns? A.