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NikAS [45]
3 years ago
14

Students find that water can be created in a lab by burning hydrogen gas in air. They conclude that water is not a compound beca

use only hydrogen is used to form the water. What is wrong with their conclusion?
Chemistry
1 answer:
SIZIF [17.4K]3 years ago
6 0

Explanation:

Their conclusion is wrong because air is a mixture of many gases. The gas that combines with hydrogen to form the water is oxygen gas.

Hydrogen gas combines with oxygen gas to form water.

Water is made up of the elements hydrogen and oxygen.

  • When hydrogen is burnt in air, the combustion is made possible due to the presence of oxygen gas.
  • Together, the reaction produces water.
  • Water is therefore a compound made up of hydrogen and oxygen
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What is the molarity of a solution made by dissolving 14.8 g of ammonium hydroxide NH4OH, in enough water to make 250.0 mL of so
kicyunya [14]

Answer:

Molarity= 1.69M

Explanation:

m= 14.8, Mm= 35, V= 0.25dm3, C= ?

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Answer:

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Explanation:

One important thing that we should know is that polarity has to do with the presence of a resultant dipole moment in a molecule.

Dipole moment is a vector quantity, This means that its direction is also taken into account when discussing the dipole moment of molecules.

Hence, symmetrical molecules such as CS2 and CCl4 are non-polar even though they have polar bonds because their dipoles cancel out(zero resultant dipole moment).

On the other hand, NH3 and CH3OH are non-symmetrical molecules hence they possess an overall dipole moment and are polar molecules.

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