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xenn [34]
3 years ago
9

When scientists say that a theory can never be proven, what are they actually saying?

Chemistry
1 answer:
ladessa [460]3 years ago
4 0
That it can't be tested but its a possible reason  
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How many grams are in 10.25 moles of zinc chromate?
Kobotan [32]

Answer:

1859.4 g of ZnCrO₄ in 10.25 moles

Explanation:

First of all, we determine the molecular formula of the compound:

Zinc → Zn²⁺  (cation)

Chromate → CrO₄⁻²  (anion)

Zinc chromate → ZnCrO₄

Molar mass for the compound is:

Molar mass of Zn + Molar mass of Cr + (Molar mass of O) . 4 = 181.41 g/mol

65.41 g/mol + 52 g/mol + 16 g/mol . 4 = 181.41 g/mol

Let's apply this conversion factor: 10.25 mol . 181.41 g/mol = 1859.4 g

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How the atomic radius (the size) of elements changes as we go down?
katrin [286]
Radius of atoms increase as you go down, can decrease from left to right in certain periods
8 0
4 years ago
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ziro4ka [17]
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Solid mercury(II) oxides(s) breaks down when heated, forming the elements mercury(l) and oxygen(g).
kherson [118]

Explanation:

2HgO ----∆---> 2Hg + O2

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