Answer:
A landform is a natural or artificial feature of the solid surface of the Earth or other planetary body.
Explanation:
For example, valleys, plateaus, mountains, plains, hills etc.
Answer:
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The reason why Tin granules is mostly used or preferred than
just a piece of Tin because a piece of Tin is plainly metal, in which this will
be difficult in having it to be oxidized when it is exposed or in the air
rather than Tin granules.
Answer:
Sample 1
Step-by-step explanation:
To answer this question we must convert all the samples to grams.
1) To convert the first sample we multiply the amount of moles by the molar mass of iron to get the mass.
3.8 mol Fe x 55.85g/mol = 212.23g Fe
2) To convert the second sample to grams we must first convert from atoms to moles. We do this by riding the amount of atoms by Avagadro’s number. We then multiply the amount of moles by the molar mass of iron.
7.0 x 10^23atoms Fe / 6.02 x 10^23 = 1.2mol Fe
1.2mol Fe x 55.85g/mol = 64.94g Fe
3) Sample 3 is already listed in grams therefore we don’t need to convert it.
4) To convert sample 4 to grams we must multiply the amount of moles by the molar mass of iron to get the mass.
1.8mol Fe x 55.85g/mol = 100.53g Fe
Sample 1 has greatest mass of iron at 212.23g Fe.
A buffer can be defined as a substance that prevents the pH of a solution from changing by either releasing or absorbing H⁺ in a solution.
<span>Buffer is a solution that can resist pH change upon the addition of an acidic or basic components and it is able to neutralize small amounts of added acid or base, pH of the solution is relatively stable.
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