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Thepotemich [5.8K]
3 years ago
15

Which of the following statements is false? Vapor refers to a gas formed by evaporation of a liquid or sublimation of a solid. S

olid water (ice), unlike most substances, is denser than its liquid form (water). Condensed states have much higher densities than gases. Gases completely fill any container they occupy and are easily compressed. Molecules are very far apart in gases and closer together in liquids and solids.
Chemistry
1 answer:
tamaranim1 [39]3 years ago
6 0

Answer: Option (b) is the correct answer.

Explanation:

Vapor refers to the conversion of liquid state of a substance into gaseous state or conversion of a solid state into gaseous state.

Density of ice (solid state of water) is less than the density of liquid state of water. This is because there are spaces present in the crystal lattice of ice due to which it has less mass.

As a result, it has low density and hence, it floats on the surface of water.

Thus, we can conclude that the statement Solid water (ice), unlike most substances, is denser than its liquid form (water), is false.

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How many grams of water will be produced if you start with 4.0 grams of hydrogen and an excess of oxygen given the following bal
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Answer:

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To find the mass of water, you need to (1) convert grams H₂ to moles (using the molar mass), then (2) convert moles H₂ to moles H₂O (using mole-to-mole ratio from reaction coefficients), and then (3) convert moles H₂O to grams (using the molar mass). It is important to arrange the conversions in a way that allows for the cancellation of units.

Molar Mass (H₂): 2(1.008 g/mol)

Molar Mass (H₂): 2.016 g/mol

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2 H₂ + O₂ -----> 2 H₂O
^                        ^

4.0 g H₂            1 mole             2 moles H₂O           18.014 g
---------------  x  ----------------  x  ------------------------  x  ---------------  = 36 g H₂O
                          2.016 g             2 moles H₂              1 mole

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