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.

A can of soda has a volume of 250 mL and a mass of 100 g? what is the density of the soda

What symbal has 42 neutrons 38 protons 38 electrons and 80 as a mass number?

To which wave behavior can audible beats be attributed? a. constructive interference b. polarization c. destructive interference d. diffraction

Suggest an explanation for the observations that ethanol, C2H5OH, is completely miscible with water and that ethanethiol, C2H5SH, is soluble only to the extent of 1.5 g per 100 mL of water.?

How many ml of a 2.0 m nabr solution are needed to make 200.0 ml of 0.50 m nabr?

A sample of argon gas, Ar (g). is placed in a 3.80 L container at 320 K. The gas pressure is 0.496 atm. How many moles of Ar gas are in the container?

Review It! All of the following are correct, except: a; A galaxy contains a vast number of stars, their planetary systems, and a variety of other celestial objects. b; Stars orbit the many planets of a galaxy.

Which would be most likely be the pH of a highly-corrosive acid? a) 1 b) 5 c) 8 D) 11

The unit cell of amazonite is made of three pairs of faces, each pair different from the others. The faces are oriented at angles to one another that are not 90 degrees.

An aqueous solution at 25∘C has a hydronium ion concentration of 3.2*10-9 M. What is the hydroxide ion concentration of the solution? Write your answer in scientific notation. Use the multiplication symbol rather than the letter x in your answer.