Achemist requires 5.00 liters of 0.420 m h2so4 solution. how many grams of h2so4 should the chemist dissolve in water? 129 grams 161 grams 206 grams 226 grams

Approximately 206 grams.

Explanation:

How many moles of sulfuric acid are there in this solution?

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The unit for concentration "" is equivalent to mole per liter. In other words, . For this solution, the concentration of is .

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What's the mass of that of ?

Start by finding the molar mass of .

Relative atomic mass data from a modern periodic table:

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.

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In other words, the chemist shall need approximately 206 grams of to make this solution. As a side note, keep in mind that the 206 grams of also take up considerable amount of space. Therefore it will take less than 5.00 L of water to make the 5.00 L solution.

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

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