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zubka84 [21]
3 years ago
12

The mass spectra of alcohols often fail to exhibit detectable M peaks but instead show relatively large ________ peaks.

Chemistry
1 answer:
nirvana33 [79]3 years ago
6 0

Answer: M-18

Explanation:

The mass spectra of alcohols often fail to exhibit detectable M peaks but instead show relatively large __M-18___ peaks.

Mass spectroscopy is used to determine the molecular mass and molecular formula of a sample.

When the mass spectra of alcohols do not show detectable M peaks, they show relatively large M-18 peaks.

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Calculate the percentage of water of crystallisation in MgSO⁴ 7H²O
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Formula of EPSOM salt = MgSO4.7H2O

molecular mass of MgSO4.7H2O = atomic mass of Mg + atomic mass of S + 4 × atomic mass of O + 7 { 2 × atomic mass of H + atomic mass of O }

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molecular mass of total water = 7 × ( 2× atomic mass of H + atomic mass of O )

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% mass of H2O in EPSOM salt = {total molar mass of H2O/molar mass of Epsom salts }× 100

= {126/246 } × 100

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At 25.5°C a gas has a volume of 125mL. What would be the volume be if the temperature increased to 50°C
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A sample compound contains 9.11 g Ni and 5.89g F. What is the empirical formula of this compound?
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The empirical formula is the simplest whole-number ratio of atoms in a compound.

The ratio of atoms is the same as the ratio of moles.

So, our job is to calculate the molar ratio of Ni to F.

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<em>Step 2</em>. Calculate the <em>molar ratio</em> of the elements

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