CHEM 1P00 Lecture 4: Chem 1P00 - Lecture 4
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When you multiply or divide and then add or subtract in a problem round the first answer from the first operation before performing others. For conversion factors that look like this (cid:2870). (cid:2873)(cid:2872)(cid:3030)(cid:3040)(cid:2869)(cid:3041)(cid:3030) write it as 2. 54cm/inch. 1 hr = 60 min (cid:2869) (cid:3045) = (cid:2869)(cid:2872)(cid:2872)(cid:2868)(cid:3040)(cid:3041) (cid:2869) (cid:3031) (cid:2869) (cid:3031) x (cid:2874)(cid:2868) (cid:3040)(cid:3041) (cid:2870)(cid:2872) (cid:3045) = 525,600: convert 7. 50ft^2 to an area in cm^2. 1 in = 2. 54cm (cid:2870)(cid:2873)(cid:2872)(cid:2869)(cid:3033)(cid:3047) x (cid:2869)(cid:2870)(cid:3041)(cid:2869)(cid:3033)(cid:3047) = 929. 0304 (cid:3030)(cid:3040)^(cid:2870) (cid:3033)(cid:3047) ^(cid:2870) Lowest temperature attainable at this time is 0 degrees f. Water freezes at 0 and boils at 100 degrees. Examples: what is the room temperature measured as 25 degrees celsius in kelvin, liquid nitrogen boil at temperature of 77k. T (c) = (t (f) 32 f) x (cid:2869)(cid:2869). (cid:2876)(cid:2868) T (f) = t(c) x (cid:2869). (cid:2876)(cid:2868)(cid:2869)(cid:3030) + 32 f. The amount of material given in an object. Density example: 23. 5 ml of liquid weighs 35. 062g. = (cid:2871)(cid:2873). (cid:2868)(cid:2874)(cid:2871)(cid:3034) (cid:2870)(cid:2871). (cid:2873)(cid:3040)(cid:3013) = 1. 49 g/ml.
