Method 1:
First find out the formula of the sample.
no. of moles of O = 25.6/16 = 1.6
no. of moles of C = 9.6/12 = 0.8
ratio of C:O = 1:2
formula is CO2
In the second sample,
no. of moles of O = 21.6/16 = 1.35
no. of moles of C = 1.35/2 = 0.675
mass of C = 0.675 x12 = 8.1g
method 2:
Actually it’s quite simple. The two samples are the same compound so the elements produced should be in the same ratio.
C/9.6 = 21.6/25.6
C = 8.1g
Answer:
What is the matrix used in lithography? Lithography is a planographic or "flat surface" method that uses a stone slab matrix. Unlike relief and intaglio printing, the matrix used in lithography is completely flat. Serigraphy is also known as "silkscreen painting".
Explanation:
i looked it up
Answer:
D) The energy and kinds of atoms of the reacting substances
The correct answer is (2) density.
An intensive property of a substance is a property that will never change no matter what. Density is a constant and thus an intensive property.
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Answer:
When two or more atoms chemically bond with each other, the resultant chemical structure is a molecule. The familiar water molecule, H2O, consists of two hydrogen atoms and one oxygen atom; these bond together to form water, irdk but it's either C or D
Explanation:
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