Answer:
34.44 g.
Explanation:
- The balanced equation for the reaction is:
<em>Fe + S → FeS,</em>
<em></em>
<em>It is clear that 1.0 mol of Fe reacts with 1.0 mol of S to produce 1.0 mol FeS.</em>
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- We need to calculate the no. of moles of 60 grams of iron and 90 grams of iron sulfide:
no. of moles of Fe = mass/atomic mass = (60.0 g)/(55.845 g/mol) = <em>1.074 mol.</em>
<em>no. of moles of FeS = mass/molar mass</em> = (90.0 g)/(87.91 g/mol) = <em>1.024 mol.</em>
<u><em>∵ Fe reacts with S with (1: 1) molar ratio.</em></u>
∴ The no. of moles of S needed to react with Fe is 1.074 mol.
<em>∴ The no. of grams of S needed = no. of moles x molar mass </em>= (1.074 mol)(32.065 g/mol) = <em>34.44 g.</em>
Law of electrolysis was given by Faraday.
He discovered that,the amount of chemical change or decomposition is exactly proportional to the quantity of electricity that passes in solution,
0.428571429 moles is your exact answer. Hope this helps!!! (:
I think thee correct answer from the choices listed above is option D. <span>When a physical change in a sample occurs, composition of the sample does not change. It stays the same. Also, the properties of the sample will still be the same. Hope this answers the question.</span>
It showed that atoms can be divided into smaller parts.
It showed that all atoms contain electrons.
Explanation:
The experiment carried out by J.J Thomson on the gas discharge tube by passing electric current through a tube filled with many different gases provided a good insight into the structure of an atom.
This experiment led to the development of the plum pudding model of the atom.
- Cathode rays and it properties were discovered in this set up.
- It furnished the scientific community with evidences that atoms can be divided into smaller parts.
- Since atoms now contain some subatomic particles, they can be broken down in like manner into further bits.
- The cathode rays which were later termed electrons became a fundamental particles known for every atom.
learn more:
Rutherford's model of the atom brainly.com/question/1859083
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