Dimercaprol (HSCH₂CHSHCH₂OH) was developed duringWorld War I as an antidote to arsenic-based poison gas and isused today to treat heavy-metal poisoning. It binds the toxic ele-ment and carries it out of the body.(a) If each molecule binds one arsenic (As) atom, how manyatoms of As could be removed by 175 mg of dimercaprol?(b) If one molecule binds one metal atom, calculate the mass %of each of the following metals in a metal-dimercaprol combina-tion: mercury, thallium, chromium

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Q: What is the mass (in ka) of 6.89 x 1025 molecules of CO2? The moiar mass of co2 is 44.01gimoi. :-

A: The mass of CO2 is calculated by finding moles of CO2.

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A: Given is, 66.6% Carbon, 11.2% Hydrogen, and 22.2% Oxygen Molar mass= 144.2 g/mol

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Q: How many N atoms are in one formula unit of (NH₄)₂SO₄?

A: formula unit of (NH4)2SO4 1 mol = 6.022 × 1023  atoms

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Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.