The first part of the scientific method is the observation. Therefore, 2. is the first step.
The second step is the hypothesis. Therefore, 1. is next.
The third step is the experiment. Therefore, 3. is next.
The final step is the conclusion. Therefore, 4. is last.
The order is:
2.
1.
3.
4.
"<span>6.022 * 10^23 atoms Al/1 mol Al" is the one that should be used for the conversion. Multiplying the number of moles by Avogadro's number would yield the correct result. The correct option among all the options that are given in the question is the second option or option "B". I hope the answer helps you.</span>
Answer:
342.8 kJ are absorbed
Explanation:
In the reaction:
4 NH3(g) + 5 O2(g) → 4 NO(g) + 6 H2O(l) ΔH° = 1168 kJ
<em>As ΔH > 0, the heat is absorbed. Also, when 4 moles of NH3 are involved in the reaction, there are absorbed 1168 kJ</em>.
Having this in mind, moles of NH3 in 20.00g are:
20.00g × (1mol / 17.0307g) = <em>1.174 moles</em>
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Thus, 1.174 moles of NH3 absorbed:
1.174 moles × (1168 kJ / 4 moles) = <em>342.8 kJ are absorbed</em>.
Answer:
The temperature in degress Celsius is 52.25°C
Explanation:
According the equation:
The temperature is:
°C
I believe the correct response would be A. The cumulative nature of science. How experimental evidence and ideas made by many scientists have accumulated and or built up to have a more understandable and or clear view of a particular scientific topic, and or principle.
