How many moles of aluminum is needed to react with 6.34 moles of Fe 3 O 4 in the reaction below?

8 Al + 3 Fe3O4 - -> 4 Al2O3 + 9 Fe

Input your answer without units.

When a neat, ordered chemical is changed into a more chemical, there is an increase in what?

What is the lowest possible value of n for a d atomic orbital?

How many liters of hydrogen gas is produced at 298 K and 0.940 atm if 4.00 moles of hydrochloric acid react with an excess of magnesium metal?

What occurs when Cr^3 + ions are reduced to Cr^2 + ions? a) electrons are lost and the oxidation number of chromium increases b) electrons are lost and the oxidation number of chromium decreases c) electrons are gained and the oxidation number of

Do you think the air at the beach is humid or dry?

A scientist discovers a new type of polymer. What must be true about this polymer? A. It contains carbon atoms arranged in a ring structure. B. It has double bonds between all the carbon atoms. C. It contains molecules of many different types. D.

A line in the lyman series of hydrogen has a wavelength of 122 nm. from what state did the electron originate?

What are the products of photosynthesis? A. Glucose and oxygen B. Oxygen, solar energy, and glucose C. Carbon dioxide, water, and solar energy D. Hydrogen, oxygen, and carbon

A sample of a substance that has a density of 0.824 g/mL has a mass of 0.421 g. Calculate the volume of the sample.

The tyndall effect is used to detect A: suspensions B:liquid solitions C:tyndalls D:colloida