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Q. I think your April 1-8 column had an error. You wrote that CO is heavier than air. CO has a molecular weight of 28. Air is mostly N2, which also has a molecular weight of 28. Air also has some O2, which has a molecular weight of 32, so the air mixture is heavier than CO. It should be OK to put the CO detector up high, and not near the floor.
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Monte Leeper
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5/14/10
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Q. I was told by my village that I need to have smoke detectors in my two-family house in order to renew my application. Even though I didn't have them before, I have to install them. One guy said they have to be hard-wired, but my electrician called and they said just battery-operated. Which is it?
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Monte Leeper
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5/14/10
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As we batted around ideas for this week’s editorial, we agreed that a new take on an old idea — New Year’s resolutions — was in order. Rather than offer our own ideas, we decided, we’d ask the experts.
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12/24/09
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