How are mixtures essential to living and non living things on earth?

1 answer:

7 0

Let's mention 2 examples of a mixture:

1) blood- blood is a mixture of blood plasma and blood cells. Blood is very important to many forms of life, including humans. It's therefore essential to living things!

2) ocean water! it's also a mixture and it covers a great portion of the Earth.

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A rock formed with 1,000 atoms of a radioactive parent element, but only contains 250 radioactive parent atoms today. If the hal

alisha [4.7K]

Answer:

age of rock is 2 million years

Explanation:

$M_{R}=\frac{M_{O} }{2^{n} }$

Where $M_{R}$ is mass remaining

$M_{R}$ is original mass

n= t/t(1/2) , which is the ratio of time to half life

$M_{O}$ = 1000atoms

$M_{R}$ =250 atoms

$250 =\frac{1000}{2^{n} }$

$2^{n} = \frac{1000}{250}\\ 2^{n} =4\\2^{n} = 2^{2}\\ n=2$

$n =\frac{t}{t\frac{1}{2} }$

t =t(1/2) *n

t(1/2) =1000000 years

t=1000000 *2

t=2,000,000 years

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3 years ago

Describe the different processes that lead to substantial internal heat sources for Jupiter and Saturn. Since these two objects

Softa [21]

Explanation:

The internal heat sources for Jupiter and Saturn derive from primordial heat resulting from the initial gravitational contraction of each planet. Jupiter also generates heat by slow contraction, which liberates substantial gravitational energy. A significant part of Saturn’s heat comes from the release of gravitational energy from helium separating from the lighter hydrogen and sinking to its core. What one considers to be a star is a matter of definition, as we discuss in more detail in the chapter on The Birth of Stars and the Discovery of Planets outside the Solar System. While both Jupiter and Saturn generate much of their energy internally, they are not large enough (by a significant factor) to support nuclear reactions in their interiors, and so are not considered to be stars.