The question's incomplete unfortunately, which observations?
Answer:
FeCl2 + H. 2
Explanation:
Iron react with hydrogen chloride to produce iron(II) chloride and hydrogen.
A statement from the laboratory report which best represents a conclusion for this investigation is that: D. students who spend less time studying after school get lower math grade.
<h3>What is a research?</h3>
A research is also referred to a study and it can be defined as an investigation which typically involves the process of manipulating an independent variable (the cause), in order to determine or measure the dependent variable (the effect) and reach a logical conclusion with results.
<h3>What is an analytical research report?</h3>
An analytical research report can be defined as a well-crafted and written document that is typically used by a researcher to display a detailed analysis of the information which are obtained through a particular research method.
In this scenario, we can infer and logically deduce that a statement from the laboratory report which best represents a conclusion for this investigation is that the group of students who spend less time studying after school would get lower math grade.
Read more on analytical research here: brainly.com/question/17137042
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Answer: D. Made of only one kind of atom
Explanation:A compound forms whenever two or more atoms form chemical bonds with each other.
Answer:
The amount of heat is 84.4894kJ
Explanation:
Given data:
mass of octane=148g
The moles of octane is:
The melting point is=-56.82°C
ΔHfus=20.73kJ/mol
The heat of fusion is:
The heat to bring the octane to a temperature of 117.8°C is:
The total heat in the process is:
Qtotal=Qfus+Q₂=26.8578+57.6316=84.4894kJ
