(A) nervous, muscular, skeletal
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Answer: 160.40 g Fe2O3 are needed.
Explanation:
Balanced equation: 2 Al + Fe2O3 —> Al2O3 + 2Fe
54.2 g Al * 1 mol Al / 26.98 g Al * 1 mol Fe2O3 / 2 mol Al * 159.69 g Fe2O3 / 1 mol = 160.40 g Fe2O3 are needed.
Answer:
This question is incomplete
Explanation:
This question is incomplete because of the absence of options. However, the compound C₆H₁₄ is hexane. Hexane is a member of saturated hydrocarbons (homologous series) called alkanes (with the general formula CₙH₂ₙ₊₂). The structure for an hexane is shown below
H H H H H H
I I I I I I
H - C - C - C - C - C - C - H
I I I I I I
H H H H H H
which can also be written as
CH₃CH₂CH₂CH₂CH₂CH₃
<span>Answer: an element and a compound.
An element is a pure substance formed by one kind of atoms (element).
A compound is a pure substance formed by several types of atoms(elements) that are connected by chemical bonds.
</span>
<em>Answer</em><em>:</em><em> </em><em>What</em><em> </em><em>does</em><em> </em><em>a</em><em> </em><em>duck</em><em> </em><em>eat</em><em> </em><em>most</em><em> </em><em>often</em><em>?</em>
<em>Option</em><em> </em><em>D</em><em> </em><em>is</em><em> </em><em>the</em><em> </em><em>best</em><em> </em><em>scientifi</em><em>c</em><em> </em><em>ques</em><em>tion</em>
<em>Hope</em><em> </em><em>it</em><em> </em><em>helps.</em><em>.</em><em>.</em><em>.</em>
