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lana [24]
3 years ago
14

3. The picture below is an example of a _________ _________. (Answer is 2 words)

Chemistry
1 answer:
Jlenok [28]3 years ago
8 0

Answer:

I can't see any picture?????

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Select the correct comparison of meteors and meteorites. Meteorites are meteors that have struck the earth’s surface. Meteors ar
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Meteors are meteorites that burn in space.
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The decomposition of N I 3 to form N 2 and I 2 releases − 290.0 kJ of energy. The reaction can be represented as 2N I 3 (s)→ N 2
ella [17]

Answer:

The change in enthaply when 10.0 g of nitrogen triiodide decomposes is -3.67 kJ.

Explanation:

2NI_3 (s)\rightarrow N_2 (g)+3 I_2 (g), \Delta H_{rxn} =-290.0 kJ

Enthalpy of the reaction when 2 moles of nitrogen triiodide decomposed =\Delta H_{rxn}

\Delta H_{rxn} = -290.0 kJ

Enthalpy of the reaction when 1 moles of nitrogen triiodide decomposed :

\Delta H=\frac{\Delta H_{rxn}}{2}=\frac{-290.0 kJ}{2} =-145.0 kJ

Mass of nitrogen triiodide decomposed = 10.0 g

Moles of nitrogen triiodide = \frac{10.0 g}{395 g/mol}=0.02532 mol

Change in enthaply when 0.02532 moles of nitrogen triiodide decomposed:

\Delta H\times 0.02532=-145 kJ\times 0.02532=-3.67 kJ

3 0
3 years ago
Jennifer checked the pressure in her bike tires before school and they had a pressure of 0.890 atm. She checked the tire pressur
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Could you guys help me with these questions pls. Thank you
lapo4ka [179]

Answer:

8.4) 27.1 cm³

8.5) 0.217 mol/dm³

Explanation:

Please see attached picture for full solution.

8.4) Since the results from titrations 3-5 are within 0.10cm³ from each other, these 3 results are concordant.

8.5) Find mol of sulfuric acid to find mol of NaOH using mole ratio. Equation has already been balanced for you, so mole ratio of NaOH to H2S04 is 2:1. To find concentration of NaOH, divide the number of moles by the volume in dm³ since the units for concentration is mol/dm³, which you can think of as the number of moles of NaOH in a dm³ of solution.

1 dm³ = 1000cm³

Thus, 1cm³= 1/1000 dm³

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3 years ago
Predict the product 1-bromo propane is treated with sodium metal
Alja [10]

When 1-bromo propane is reacted with sodium metal, the propane and sodium bromide are formed.

  • Propane and sodium bromide are produced when the 1-bromo propane is reacted with sodium metal.
  • The Bromine which is present in the 2-bromopropane is removed through hydrogenation and combines with the sodium metal which results in the production of propane and sodium bromide.
  • So we can conclude that propane and sodium bromide are produced when the 1-bromo propane is reacted with sodium metal.

Learn more about 1-bromo propane here: brainly.com/question/25597694

Learn more: brainly.com/question/25952418

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