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Viefleur [7K]
3 years ago
15

How many moles are present in 4.51x1015 atoms of Aluminum (Al)?

Mathematics
1 answer:
Westkost [7]3 years ago
8 0

Answer:

divide by avagadro number to get the amount of moles in the atoms you have

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Which expression represents 9 less than a number?
My name is Ann [436]

Answer:

x-9

Step-by-step explanation:

"Less than" switches the way of the expression.

If the "less than" was not there it would have been:

9-x

"Less" means subtract so you would subtract x from 9.

Hope this helped!

7 0
4 years ago
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2. What is the value of the correlation coefficient "r" of the data set?
stiv31 [10]

c) 0.66

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3 years ago
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The difference of twice a number and 2 is -21
Anna35 [415]

Answer:

2x-2= -21

Step-by-step explanation:

8 0
3 years ago
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What is the slope of the line that contains the points (-2,7) and (2,3)
Ludmilka [50]

The formula for slope is

\frac{y_{2}-y_{1}}{x_{2}-x_{1}}

In this case...

y_{2} =3\\y_{1} =7\\x_{2} =2\\x_{1} =-2

^^^Plug these numbers into the formula for slope...

\frac{3-7}{2 - (-2)}

\frac{-4}{4} -------------------> Simplifies to -1

                                                ^^^This is your slope

Hope this helped!

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4 0
3 years ago
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ASAP!!! Question 7 (Essay Worth 5 points)
forsale [732]

The unit rate for every 1 student out of school, there are 10 students going to school is 10 students going to school per 1 student out of school

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more numbers and variables.

A unit rate is a ratio between two different units with a denominator of one.

If For every 1 student out of school, there are 10 students going to school, hence:

Unit rate = 10/1 = 10 students going to school per 1 student out of school

The unit rate for every 1 student out of school, there are 10 students going to school is 10 students going to school per 1 student out of school

Find out more on equation at: brainly.com/question/2972832

#SPJ1

8 0
2 years ago
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