First balance the equation: you get 3Fe + 4H2O = Fe3O4 +4H2O
Then set up the equations according to the spidey map below.
x 10^25 molec. H2O/ 1 x x x
Multiply the top all together, then divide by the whole bottom half.
Answer: 154.4 g H2
136 g Fe /1 x x x
Multiply the top all together, then divide by the whole bottom half.
Answer: 4.95 x 10^20 Formula units (fu) Fe3O4
8.25 x 10^23 molec. Fe/ 1 x x
Multiply the top all together, then divide by the whole bottom half.
Answer: 1.83 mol H2
Pasteur said that heating the wine at about 120°F would make sure that the wine would not turn sour, so the option is A.
Here's the information link: http://www.faqs.org/health/bios/83/Louis-Pasteur.html
Answer:
Group 2
Explanation:
The force pulling a tree down is the same that brings a skier to the lodge: food and beer. No, just kidding. Gravity. The parachuter in Group three also has gravity as a key force, but the reverse force of the air on the parachute is a key consideration to the problem, as well as to the parachuter. But it comes close.
Answer:
NH3
Explanation:
In solution, they are in equilibrium. NH4+ acts as a bronsted Lowry acid and donates an H to become NH3, and NH3 acts as a bronsted lowry base and accepts an H. In this pair, NH3 is a weak base, which gets its basic character due to the presence of lone pair of nitrogen and its ability to donate it.