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Where elements of roughly the same size substitute in different percentages?
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Roughly how many elements are there?
90 naturally occurring elements, unknown number possible elements.
Which determines the reactivity of the elements?
Roughly, first ionization potential and electron affinity.
Why is oxygen an element-?
elements are those which has same kind of atoms ex. oxygen, hydrogen etc. but when you join two elements you get a compound. ex. react oxygen and hydrogen you get water. elements are atoms of the same kind. so if you cut up a piece of sugar paper of different colours and 5 of you did this and 3 where squares and 2 where circles and you joined 2 circles together of the same size (roughly) and nearly same colour then they are an elements. but if they where different colour or sizes then they would just be a compound.
Is an igneous rock a element?
No Igneous rock is consistently a compound - a mixture of elements. Although there are variations in composition, igneous rock is usually made up of roughly half oxygen, roughly one quarter silicon, and lesser, but significant, quantities of aluminum, calcium, sodium, potassium, and magnesium., with a sprinkling of other elements.
How many percent of Pewter is Antimony?
"Pewter" is a somewhat ambiguous term for a variety of alloys composed mainly of tin. There isn't necessarily a fixed percentage of antimony, but if you're looking for a rough estimate... around 5% or less is typical. You can roughly estimate the percentage of tin by the hardness of the alloy... softer alloys contain higher percentages of tin and lower percentages of copper and/or antimony.
What are the percentages of people who have anorexia in the US?
1 in every 250, roughly.
Roughly how many elements are there?
90 naturally occurring elements, unknown number possible elements.
Did the nuclear bomb consist of any metals or elements?
roughly 1/3 of the elements on the periodic table are used in some way
Which two elements were used to produce the atomic bombs?
The key elements to making fission bombs are: Uranium and Plutonium. The specific isotopes of interest are: Uranium-233, Uranium-235, and Plutonium-239. But many other elements are needed to make a functional bomb. As a very rough guess, about a quarter of the elements on the periodic table are needed somewhere in the bomb, roughly 23 different elements in total.
Which determines the reactivity of the elements?
Roughly, first ionization potential and electron affinity.
Roughly 3 quarters of the elements in the periodic table are?
They are metals.
What percentages of all jobs in US are in agriculture and its related fields?
Roughly 30% of all US jobs have their origin in agriculture or a related field. This includes the large agribusiness processing firms.
What does Sara mean in different languages?
In Hebrew, it roughly means, "PRINCESS"
How many different types of pasta are they?
roughly 350...
What do you take in as you inhale?
The air we breathe is roughly one fifth oxygen and four fifths nitrogen.There are very small percentages of other gases such as Carbon Dioxide, Neon, Helium, Methane, Krypton, Hydrogen and Xenon.
How many different types of rare cancer are there?
roughly 200
Why is oxygen an element-?
elements are those which has same kind of atoms ex. oxygen, hydrogen etc. but when you join two elements you get a compound. ex. react oxygen and hydrogen you get water. elements are atoms of the same kind. so if you cut up a piece of sugar paper of different colours and 5 of you did this and 3 where squares and 2 where circles and you joined 2 circles together of the same size (roughly) and nearly same colour then they are an elements. but if they where different colour or sizes then they would just be a compound.
