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3 years ago

Does this model represent a compound? Explain your answer

Mathematics

2 answers:

Svetlanka [38]3 years ago

7 0

Answer:

The model does not represent a compound because it shows two atoms of the same element combined.

Compounds are made of two or more atoms of different elements.

In a ball-and-stick model of a compound, there should be balls of different colors

zvonat [6]3 years ago

3 0

Answer:

Step-by-step explanation:

The model shows two similar elements.

Although we do not know what the element is, we can conclude that the model is not a compound.

This is because the definition of a compound is when two different elements join.

However, the model has two similar elements, which forms a molecule, not a compound.

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mamaluj [8]

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3 years ago

Evaluate C_n.xP^xQn-x For the given n=7, x=2, p=1/2

r-ruslan [8.4K]

Answer:

The value of given expression is $\frac{21}{128}$ .

Step-by-step explanation:

Given information: n=7, x=2, p=1/2

$q=1-p=1-\frac{1}{2}=\frac{1}{2}$

The given expression is

$C(n,x)p^xq^{n-x}$

It can be written as

$^nC_xp^xq^{n-x}$

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$^7C_2(\frac{1}{2})^2(\frac{1}{2})^{7-2}$

$\frac{7!}{2!(7-2)!}(\frac{1}{2})^2(\frac{1}{2})^{5}$

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$21(\frac{1}{2})^{7}$

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Therefore the value of given expression is $\frac{21}{128}$ .

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3 years ago

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3 years ago

Read 2 more answers

A 34-inch piece of wood is 2.4% of a longer piece of wood. How long is the longer piece of wood? Show your work. You can use pro

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Think of this as a proportion: 2.4 is to 100, as 34 is to L ("L" for "Long piece.")

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L = 1416.666...

So the longer piece of wood is 1,416.66... inches long.

Hope this helps!!:)

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3 years ago