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Cerrena [4.2K]
2 years ago
7

An element has 2 isotopes: 6X at 7.59% and 7X at 92.41%. What is the average atomic mass?

Mathematics
1 answer:
crimeas [40]2 years ago
5 0

The average atomic mass is 6.92X

How do we compute the average atomic mass?

In a bid to  calculate the average atomic mass, we  multiply the fraction of each isotope by the mass number , then add them together.

This is more like weighted average, as shown below:

average atomic mass=(mass number of first isotope*fraction)+(mass number of second isotope*fraction)

average atomic mass=(6X*7.59%)+(7X*92.41%)

average atomic mass= 6.92X

Find out more about average atomic mass on:brainly.com/question/13299770

#SPJ1

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How many solutions are there in 1/2 (10x + 15) – 3/2 = 2x + 6 + 3x
goldenfox [79]

Answer:

Value for x cannot be deduced

Step-by-step explanation:

To solve this question we will have to open the bracket first...we will solve using bodmas rule

1/2(10x+5)-3/2=2x+6+3x

Open the bracket

5x+5/2-3/2=2x+6+3x

Let's collect the like terms

5x-2x-3x=6-5/2+3/2

Lcm for the right side is 2

0=12-5+3/2

0=10/2

0=5

Therefore the value for x cannot be deduced due to the fact that x has been cancelled when solving

4 0
3 years ago
The circumference of a circle is 9π m. What is the area, in square meters? Express your answer in terms of π π
storchak [24]

Answer:

A = 20.25π sq meters

Step-by-step explanation:

C = 2πr

9π = 2πr

divide π from each side to get:

9 = 2r

r = 9/2 or 4 1/2

A = πr²

A = π (4.5²)

A = 20.25π

5 0
3 years ago
Convert the given measurement of water to the unit indicated 5.8kg to cm cubed
Klio2033 [76]
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4 0
4 years ago
PLEASE HELP !! ILL GIVE BRAINLIEST !!
Nady [450]

Answer:

<QPS and <TSU

4 0
3 years ago
(x +4)2 what is the answer? I need help I can't find the answer ​
Margarita [4]

Answer:

2x+8

Step-by-step explanation:

(x+4)(2)

=(x+4)(2)

=(x)(2)+(4)(2)

=2x+8

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Hope this helps

5 0
3 years ago
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