Chemistry Practice: Sig Figs

Chemistry Practice: Sig Figs

<p> Name: ______</p><p>Chemistry Practice: Sig Figs</p><p>1. Determine the number of sig figs in each of the numbers below: a.) ______452 g.) ______780 000 m.) ______-0.008 b.) ______2.081 h.) ______0.000 0247 n.) ______58.04 c.) ______45 000 i.) ______110.00 o.) ______800 d.) ______0.035 j.) ______3.5 x103 p.) ______0.300 e.) ______1.00 k.) ______0.02 q.) ______2.80 x102 f.) ______0.0080 l.) ____ 9.010 x10-6 r.) ______400.</p><p>2. Rewrite each number to the number of sig figs indicated (in parenthesis). a.) ______254.6381 (3) j.) ______22 (1) b.) ______0.028107 (1) k.) ______5 x104 to (2) c.) ______5 (3) l.) ______3.681 076 (3) d.) ______2000 (2) m.) ______56.0 (2) e.) ______0.00532 007 (4) n.) ______76.00 (1) f.) ______247 081 352.4 (2) o.) ______0.5 (3) g.) ______0.005 (3) p.) ______300 to (2) h.) ______4.24036 x105 (2) q.) ______2.87301 x10-2 (1) i.) ______87 356.092 (4) r.) ______6.02 x10-4 (2)</p><p>3. Perform the following calculations. Report your answers with the correct sig figs and proper units. a.) 35.6 g + 4.31 g =</p><p> b.) 340 cm – 0.02 cm =</p><p> c.) 4.681 g / 5.2 cm3</p><p> d.) 3 x103 m x 6.0 x104 m = </p><p> e.) 0.0300 kg + 212.0 g = </p><p> f.) 19.00s + 1.00 s =</p><p> g.) 0.500 lbs. / (0.030 in x 0.022 in) =</p><p> h.) Convert 7.44 ft to inches</p><p> i.) 1.76x10-4 s x 8.60 x10-2 s = </p><p> j.) (29.7 g + 0.3g) / 0.026 hr= </p>

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