If an unknown mineral has a hardness between 5 and 9, what could you do to the mineral to find out more about its hardness?

A package of aluminum foil is 63.2 yd long, 11 in. wide, and 0.00035 in. thick. If aluminum has a density of 2.70 g/cm³, what is the mass, in grams, of the foil?

A sample of gold (Au) has a mass of 45.39 g. a. What is the molar mass of gold? b. Calculate the number of moles of gold (Au) in the sample. Show your work. c. Calculate the number of atoms of gold (Au) in the sample. Show your work.

The Hertzsprung-Russell Diagram Answer the questions using the above HR Diagram 1. What factor affects the color of a star? 2. What is luminosity? 3. What factor affects the luminosity of a star? 4.

What does the type of bond have to do with the properties of the compound?

History of Aluminum

How do you get dencity?

The materials created from a chemical reaction are called A. reactants. B. products. C. coefficients. D. none of the above.

Organic compounds ALL contain the element carbon. Which organic compound, used for stored chemical energy, contains carbon, hydrogen, oxygen, and often phosphorous?

In a polar molecule, which atom will have the greatest partial negative charge? A) the smallest atom B) the least electronegative atom C) the largest atom D) the most electronegative atom

Why is portion control important