If a metal ore contains 12.4% pure metal, how

many pounds of pure metal can be obtained

from 55 pounds of metal ore?

A carpet sells for 25.99 a square yard. what is the price of the carpet per square meter

What 2 factors determine whether a collision between reactants is effective

An atom of 118Xe contains___ neutrons? A) 118 B) 54 C) 64 D) 172 E) 110

A train travels 93 kilometers in 4 hours, and then 93 kilometers in 1 hours. What is its average speed?

If 2 or more elements are involved in a chemical reaction, they will most likely form a/an

The density of a gas is measured at 1.653 g/L at 746 mmHg and 25.0 °C. What is its molar mass?

What significant contribution did Lavoisier make to chemistry? A. He was the first to use scientific experiments to learn about atoms. B. He was the first to discover the atom. C. He was the first to propose the atomic theory. D.

How do you calculate average percent yield?

Identify the medium for the following waves: • The Wave Exercise waves: • Ripples on a pond: • Sound waves from a stereo speaker: • Seismic (earthquake) waves:

What is most believed by most scientists about the age of our solar system.