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disa [49]
3 years ago
9

When a scientist conducts an investigation, which of the following is the first thing he or she should do?

Chemistry
2 answers:
Vinvika [58]3 years ago
6 0

The correct answer is C

Lelu [443]3 years ago
5 0
The correct answer is "B. Make a Hypothesis".
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Which pair of elements would most likely bond to form a covalently bonded compound?
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Answer:

two nonmetal elements join together to form covalent compounds

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Alcano con 1 carbono?
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How many grams of Ni are formed from 55.3 g of Ni2O3?<br><br> 2Ni2O3(s)⟶4Ni(s)+3O2(g)
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Answer:

39.2 g

Explanation:

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First we <u>convert 55.3 grams of Ni₂O₃ into moles of Ni₂O₃</u>, using its<em> molar mass</em>:

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Then we <u>convert 0.334 moles of Ni₂O₃ into moles of Ni</u>, using the <em>stoichiometric coefficients of the balanced reaction</em>:

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Finally we <u>calculate how much do 0.668 Ni moles weigh</u>, using the<em> molar mass of Ni </em>:

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Where is the epicenter of this hypothetical earthquake?
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Define by-products of petroleum?
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