Calculate the amounts requested if 3.30 mol Fe2O3 completely react according to the following equation. Fe2O3 + 2Al - - > 2Fe + Al2O3

a. moles of aluminum needed

b. moles of iron formed

c. moles of aluminum oxide formed

Bju chemistry section 5b a. the energy change that occurs when an atomic anion is formed

What determines that an element is a metal? a. the magnitude of its charge c. when it is a Group A element b. the molecules that it forms d. its position in the periodic table

Why can a liquid take the shape of the bottom of its container? The particles of a liquid can flow around one another to new locations. The particles of a liquid can break free from one another and spread out.

Consider these two electron configurations for neutral atoms L and M. L - 1s22s22p63s2 M - 1s22s22p63s13p1 What is the difference between atom L and atom M?

Use the helium-4 isotope to define atomic number and mass number. why does knowledge of atomic number enable us to deduce the number of electrons present in an atom

If chlorine gas is bubbled through an aqueous solution of sodium iodide, the result is elemental iodine and aqueous sodium chloride solution. what kind of reaction took place?

In a solution such as salt water, the component that is dissolved is called the O solute O solvent O suspension O colloid

Which is the balanced chemical equation showing hydrogen peroxide (h2o2) decomposing into hydrogen (h2) and oxygen (o2) ? 1. h2 + o2 → h2o2 2. 2 h2o2 → 2 h2 + o2 3. h2o2 → h2 + o2 4. 2 h2 + o2 → 2 h2o2?

Assuming constant pressure, rank these reactions from most energy released by the system to most energy absorbed by the system, based on the following descriptions: A. Surroundings get colder and the system decreases in volume. B.

Zircon is a mineral with the empirical formula ZrSiO4. If all the zirconium is 90Zr, all the silicon is 28Si, and all the oxygen is 16O, what mass of oxygen is present in 10. g of zircon?