An iron ore contains 39% Fe2O3 by mass. What is the maximum mass of iron that can be recovered from 13.2 kg of this ore?

Which of the following rocks would probably be made up of the largest mineral grains? (granite, scoria, pumice, basalt)

If there are 3 g of sulfur in each 100 g of crude oil, what is the percent composition in regards to sulfur

An isotope with 8 protons, 9 neutrons, and 8 electrons would have which symbol? A) 16F B) 16O C) 17F D) 17O

What does it mean when a person says everything is made of Stardust?

A 100 g sample of H2O liquid at 22°C absorbs 8360 jewels of heat what will be the final temperature of the water

In the reaction Mg (s) + 2HCl (aq) H2 (g) + MgCl2 (aq), how many grams of hydrogen gas will be produced from 125.0 milliliters of a 6.0 M HCl in an excess of Mg

An element has an atomic number of 92 and a mass number of 234, how many neutrons are there?

What energy is a quarterback's arm before throwing a pass

Which atom can accommodate an octet of electrons but doesn't necessarily have to?

Heat is an exchange of internal energy from one system to another due to A. a temperature difference between the systems. B. one system being gas and the other being solid. C. the systems having the same temperature. D.