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Anna007 [38]
3 years ago
7

true or false, Discovering which of two materials can scratch the other is a way to compare the hardness of the materials

Chemistry
2 answers:
Shkiper50 [21]3 years ago
7 0
True, the hardness of all materials in relative <span />
Anton [14]3 years ago
7 0
This answer is true :) 
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Answer:

280 g

Explanation:

Let's consider the decomposition of ammonium nitrate.

NH₄NO₃(s) ⇒ N₂(g) + 0.5 O₂(g) + 2 H₂O(g)

We can establish the following relations:

  • The molar mass of NH₄NO₃ is 80.04 g/mol.
  • The molar ratio of NH₄NO₃ to N₂ is 1:1.
  • The molar mass of N₂ is 28.01 g/mol.

The mass of N₂ produced when 800 g of NH₄NO₃ react is:

800gNH_{4}NO_{3}.\frac{1molNH_{4}NO_{3}}{80.04gNH_{4}NO_{3}} .\frac{1molN_{2}}{1molNH_{4}NO_{3}} .\frac{28.01gN_{2}}{1molN_{2}} =280gN_{2}

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4 years ago
How many moles of water can be produced from the reaction of 28g of C3H8
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3 years ago
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tiny-mole [99]

d) protons and electrons.

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                                       pls give brainliest if this helped :)

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