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Q: 74 of the mass of the Earth's crus is composed of only two elements. What are these?
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What Elements combine in fixed mass ratios to form compounds This must mean that elements?

Elements are composed of discrete units called atoms.


Why is the sun's mass only 300000 times the mass of Earth and how is this possible?

Because it si composed of hydrogen and helium, which are low density elements.


How big planets are from smallest to biggest?

Mercury's mass = 0.055 x Earths, Volume = 0.056 x Earths Mars' mass = 0.1075 x Earths, Volume = 0.151 x Earths Venus' mass = 0.815 x Earths, Volume = 0.857 x Earths (Earth) mass = 1 x Earths, Volume = 1 x Earths Uranus' mass = 14.536 x Earths, Volume = 63.086 x Earths Neptune's mass = 17.147 x Earths, Volume = 57.74 x Earths Saturn's mass = 95.152 x Earths, Volume = 763.59 x Earths Jupiter's mass = 317.8 x Earths, Volume = 1321.3 x Earths


Are all sample of elements are composed of atoms with same atomic mass?

All atoms in a pure sample of one element have the same mass. The atoms in a different element have a different mass. Different atoms is what makes different elements.


How much of earths mass made up by the core?

The core is 33% of the Earths mass


What is the atomic mass composed of?

The atomic mass is composed of a combination of protons and neutrons.


What four elements from the periodic table make up most of the mass of an organism?

Most of the mass of an organism is composed of carbon (C), hydrogen (H), oxygen (O), and nitrogen (N).


What are the masses of all the planets in the solar system?

Mercury's mass = 3.30 x 1023kg or 0.055 x Earths Venus' mass = 4.87 x 1024kg or 0.815 x Earths (Earth) mass = 5.97 x 1024kg or 1 x Earths Mars' mass = 6.42 x 1023kg or 0.1075 x Earths Jupiter's mass = 1.90 x 1027kg or 317.8 x Earths Saturn's mass = 5.69 x 1026kg or 95.152 x Earths Uranus' mass = 8.68 x 1025kg or 14.536 x Earths Neptune's mass = 1.02 x 1026kg or 17.147 x Earths


The layer of rock that comprimises 67 of earths mass?

the layer of rock that comprises 67% of earths mass


Which planet is most like Earth in diameter and mass?

Venus is closest to the Earths size and mass - often referred to as Earths sister or twin planet. Venus' Mass is around 82% of Earths, while its diameter is a little smaller than Earths at around 95% of Earths.


Which planet is most like earth in size and mass?

Venus is closest to the Earths size and mass - often referred to as Earths sister or twin planet. Venus' Mass is around 82% of Earths, while its diameter is a little smaller than Earths at around 95% of Earths diameter.


What is the mass of the earths mass compared to the suns Mass?

ur mother