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MAVERICK [17]
3 years ago
7

Which VIIA element doesn't have stable isotopes in nature?

Chemistry
1 answer:
Stolb23 [73]3 years ago
8 0
Hello there.

<span>Which VIIA element doesn't have stable isotopes in nature?

</span>Db. At
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(05.02 LC)<br><br> How many moles of each element are in one mole of Sr(HCO3)2? (3 points)
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Answer:

The number of moles of Sr in one mole of Sr(HCO₃)₂ = 1 mole

The number of moles of H in one mole of Sr(HCO₃)₂ = 2 moles

The number of moles of C in one mole of Sr(HCO₃)₂ = 2 moles

The number of moles of O in one mole of Sr(HCO₃)₂ = 6 moles

Explanation:

The given chemical formula of the compound is Sr(HCO₃)₂

The number of atoms of Sr in the compound = 1

The number of atoms of H in the compound = 2

The number of atoms of C in the compound = 2

The number of atoms of O in the compound = 6

The number of atoms of each element present in each formula unit of Sr(HCO₃)₂ is proportional to the number of moles of each atom in one mole of Sr(HCO₃)₂

Therefore;

The number of moles of Sr in one mole of Sr(HCO₃)₂ = 1 mole

The number of moles of H in one mole of Sr(HCO₃)₂ = 2 moles

The number of moles of C in one mole of Sr(HCO₃)₂ = 2 moles

The number of moles of O in one mole of Sr(HCO₃)₂ = 6 moles.

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Food couldn’t reach the stomach without the esophagus and the _? please help only correct answers.
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Calculate the molar solubility of ca(io3)2 in each solution below. the ksp of calcium iodate is7.1 × 10−7.
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In order to find the answer, use an ICE chart:

Ca(IO3)2...Ca2+......IO3- 
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<span>Ca(IO₃)₂ ⇄ Ca⁺² + 2 IO⁻³
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K sp = [Ca⁺²][IO₃⁻]²
K sp = (x) (2 x)² = 4 x³
7.1 x 10⁻⁷ = 4 x³
<span>x = molar solubility = 5.6 x 10</span>⁻³ M

The answer is 5.6 x 10 ^ 3 M. (molar solubility)
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