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nlexa [21]
3 years ago
14

Draw the Lewis structure for N2H2

Chemistry
1 answer:
vodka [1.7K]3 years ago
6 0

Answer: this is dinitrogen dyhidride.

Explanation:

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If you reacted 93.7 grams of iron with excess copper sulfate solution, what mass of copper would you expect to make? you may nee
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Answer is although the question should have 3 significant figures.

<h3>What is significant figures?</h3>
  • Chemical equation

Fe + CuSO4 --> Cu + FeSO4

It is already balanced

  • Molar ratios

1 mol Fe : 1 mol CuSO4 : 1 mol Cu : 1 mol FeSO4

  • atomic masses of Fe and Cu

Fe: 55.8 g/mol

Cu: 63.5 g/mol

  • number of moles of Fe

number of moles = mass in grams / atomic mass = 93.7 g / 55.8 g/mol = 1.679 mol

  • number of moles of Cu:

1 mol Fe / 1 mol Cu => 1.679 mol Fe / 1.679 mole Cu

  • mass of Cu in 1.679 moles Cu

mass = atomic mass * number of atoms = 63.5 g/mol * 1.679 moles = 106.6 g = 107 rounded to 3 significant figures.

To learn more about significant figures, refer to:

brainly.com/question/24491627

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1 year ago
Calorimetric studies show that the reaction is exothermic. 2NO2(g) N2O4(g) + 14.1 kcal. Based on this information, which one--if
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In order for you to get the answer, please have in mind the following situation: To increase the molar concentration of N2O4(g), 2NO2(g) should also increase for equilibrium to occur. Now, this equation is exothermic. By <span>Le Chatelier's principle, equilibrium constant and reaction constants also come into play in terms of increasing or decreasing the temperature. After that I know you can find the answer. </span>
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