# Workshop 1 answers - 1 liter(L = 1000 milliliters(mL =...

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Names_________________________________________________________________ Everybody in your group must sign their own name. Workshop 1(10 points) Spring 20111 Chapter 1 (conversions) 1. (2 pts) If the maximum speed limit is 68.0 miles/hr. What is that in m/s? (1.61km = 1 mile) 68.0 miles/hr x 1hr/60min x 1min/60s x 1.61km/1mile x 1000m/1km = 30.4 m/s The final answer should have 3SF (since the start value 68.0 has 3SF) 2. (2 pts) Convert 150 Kelvin to Fahrenheit. ° C = 150-273 = -123 -123 = (F-32)/1.8 = -189.4 = -190 The final answer should have 2SF (since the start value 150 has 2SF) 3. (1 pt) How many significant figures are in following values: a) 3.250 4SF b) 805 3SF c) 0.00678 3SF d) 100 1SF e) Write 412380 in scientific notation 4.1238 x 10 5 4. (1 pts) The volume of an aquarium is 1500 L. The density of seawater is 1.03g/cm 3 . What is the mass (in grams) of the water in the tank?

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Unformatted text preview: 1 liter (L) = 1000 milliliters (mL) = 1000 cm 3 D = mass/volume → mass = 1.5 x 10 6 g The final answer should have 2SF (since the start value 1500 has 2SF) 5. (1 pt) Keeping in mind the rules for rounding, significant digits and scientific notation, what is 0.0025 × 111.09? a) 0.28 correct b) 0.27 c) 0.278 d) 0.3 Explanation: 0.0025 (2 sig figs) × 111.09 (5 sig figs) =0.28 (2 significant figures which is the smallest number per the rule for multiplication). 6. (3pts) The density of diamond is 3.51 g/cm 3 . The international (but non-SI) unit for weighing diamonds is the “carat” (1 carat = 200 mg exactly.) What is volume of a 0.82 carat diamond? density = 3.51 g/cm 3 m = 0.82 carat d =m/V V =m/density = (0.82 carat/3.51 g/cm 3 ) x(200 mg/carat )× (1 g 1000 mg) = 0.0467236 cm 3 Correct answer: 0.047 cm 3 ....
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Workshop 1 answers - 1 liter(L = 1000 milliliters(mL =...

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