Answer:
55.85 grams of Fe is formed.
Explanation:
Identify the reaction:
2Fe₂O₃ + 3C → 4Fe + 3CO₂
Identify the limiting reactant, previously determine the mol of each reactant
(mass / molar mass)
10 g / 12 g/m = 0.83 moles C
80 g / 159.7 g /m = 0.500 moles Fe₂O₃
2 moles of oxide need 3 moles of C, to react
0.5 moles of oxide, will need ( 0.5 . 3)/ 2 = 0.751 mol
I have 0.83 moles of C, so C is the excess.
The limiting is the oxide.
3 mol of C need 2 mol of oxide to react
0.83 mol of C, will need (0.83 . 2)/ 3 = 0.553 mol of oxide, and I only have 0.5 (That's why Fe₂O₃ is the limiting)
Ratio is 2:4 (double)
If I have 0.5 moles of oxide, I will produce the double, in the reaction.
1 mol of Fe, will be produce so its mass is 55.85 g
Answer:
No.
Explanation:
He also created a telescope and formula for universal gravity.
Answer:
Explanation:
Briefly, the scientific process starts by making an observation of a phenomenon, which leads you to question what is happening, and then to formulate a hypothesis.
The hypothesis is a reasonable explanation of the phenomenon, which relates a cause and a consequence, and that can be testable, and can result to be true or false.
Then, you design an experiment to test the hypothesis.
The experiments will give you a set of data which must be interpreted to conclude whether your hypothesis was true or false. This may be seen as the final step of the process, which gives the outcome of the scientific process. This conclusion must be based on reliable data and a logical.
If, your conclusion is clear, logically deducted from the data, using a correct analysis, your experiment was succesful. No matter whether the hypothesis resulted true or false.
Nevertheless, this is not really the final step, as now sharing the information with the scientific community is very important. I t might also happen that you want to iterate the process, to test a new hypothesis.
The answer is over fertilizing lawns and fields. <span />
Explanation:
Boiling water:water heats up and bubbles physical change
Baking a cake: starts to cook into bread chemical change
Burning wood: turns into ash and burned wood chemical change
Painting a door: door changes color physical change