4Fe+3O2-->2Fe2O3. How many moles of fe2o3 are produced from 0.5 moles of o2?

A. 0.33 mol

B. 0.75 mol

C. 0.38 mol

D. 0.67 mol

Which equation agrees with the ideal gas law?

1. Why is it that some combinations of ions do not seem to react while others result in precipitate? 2. For an insoluble compound, how might you prevent formation of precipitate? 3.

The concentration of hydrogen ions [h+] in a solution is 4.5 * 10-2m. what is the ph?

5. Which element, when combined with fluorine, will form an ionic compound? * a. oxygen b. bromine c. potassium d. nitrogen 6. What is the correct formula for sodium sulfate? * a. NaHSO3 b. NaHSO4 c. Na2SO3 d. Na2SO4

When falling through the air, which of the following objects will hit the ground first? a penny a large poster a shoe box a cell phone

The subatomic particle that has the least mass is the ...

Which two properties are used to define matter? has mass and conducts heat has buoyancy and volume has mass and takes up space conducts energy and has characteristic properties

Calculate the energy if 48.7 g of Al reacts in the following reaction. (Al = 26.98 g/mol) Fe2O3 (s) + 2 Al (s) →Al2O3 (s) + 2Fe (s) ∆Hrxn = - 852 kJ.

Which type of wave has a wave perpendicular to the disturbance? Surface Longitudinal Mechanical Tranverse

Caffeine's molecular formula is c8h10n4o2. the molar mass of caffeine is 194g/mol. what is the percentage of carbon in caffeine