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Aloiza [94]
3 years ago
10

How is mass described?

Chemistry
1 answer:
Sholpan [36]3 years ago
7 0
Mass is described like this: Any thing that takes up space
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Calculate the how many sodium atoms must react completely to give 33,6 dm³ hydro-
lions [1.4K]

To give 33.6 dm³ hydrogen gas at STP, 18.06 x 10²³ atoms of Na must react completely.

<h3>What is Mole concept ?</h3>

A mole is a unit of measurement used to measure the amount of any fundamental entity (atoms, molecules, ions) present in the substance.

As according to the given equation, 2 moles (ie 12.04 x 10²³ atoms) of Na-atoms produces 1 mole (22.4 ltr) of H₂-gas.

Hence, to produce 33.6 ltr (equivalent to 33.6 dm³) of H₂-gas produced by ;

   = 12.04 x 10²³ atoms of Na / 22.4 ltr of H₂-gas x 33.6 ltr

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Hence, To give 33.6 dm³ hydrogen gas at STP, 18.06 x 10²³ atoms of Na must react completely.

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At what speed does all electromagnetic radiation travel?
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The answer is letter A definitively .
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During the first half of the 20th century, the theory of plate tectonics was developed. Evidence supporting this theory included
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The most recent evidence supporting the theory of plate tectonics is the use of  GPS monitoring and satellite imagery of crustal movements.

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when the orbitals or energy levels of an atom are full, it is considered to be stable. which atom in the ground state has a stab
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