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SVETLANKA909090 [29]
3 years ago
13

Is there life anywhere else in the universe

Biology
2 answers:
quester [9]3 years ago
8 0
Scientists are still doing a research whether there is life on mars. For now, the answer is no.
fredd [130]3 years ago
4 0
No i don't think so i have not heard any one say that there is life anywhere else
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What is the average atomic mass of a sample that has two isotopes, one with a mass of 21 amu at 62% abundance and another with a
motikmotik

Answer:

Average atomic mass = 21.38 amu.

Explanation:

Given data:

Mass of first isotope = 21 amu

Abundance of first isotope = 62%

Mass of second isotope = 22 amu

Abundance of second isotope = 38%

Average atomic mass = ?

Solution:

Average atomic mass  = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass)  / 100

Average atomic mass  = (62×21)+(38×22) /100

Average atomic mass =  1302 +836 / 100

Average atomic mass = 2138 / 100

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3 years ago
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Explanation:

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3 years ago
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What sort of evidence can you use to show that all living things grow and develop
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Knowing the type of food consumed by an organism helps to identify the role of the organism in the community. This role is known
Zigmanuir [339]

Answer:

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