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3 years ago

In any chemical compound, the elements are always combined in the same proportion by ___.?

Chemistry

2 answers:

irga5000 [103]3 years ago

6 0

Answer is: elements are always combined in the same proportion by mass.

Law of multiple proportions or Dalton's Law said that the ratios of the masses of the second element which combine with a fixed mass of the first element will be ratios of small whole numbers.

For example, nitrogen(I) oxide N₂O; m(N) : m(O) = 2·14 : 16 = 7 : 4.

Another example, water (H₂O) is made of two hydrogen atoms and one oxygen atom:

m(H) : m(O) = 2·1 : 16 = 1: 8.

Andru [333]3 years ago

6 0

Answer:

mass

Explanation:

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A volatile cell using Cu/Cu2+ and Sn/Sn2+ half cells is set up at standard conditions ,and each compartment has a volume of 345 ml .

current = 0.17 A

time = 48 hrs =48 (60) (60) =172800 sec

we know , I = Q/t

thus , Q ,charge= It = 0.17 (17280) =29376 C

Then ,atomic mass of copper is 63 g

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Hence , 9.589 g of Copper is deposited .

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