Chem_181_Mod1_Assign1 2018

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Southern Alberta Institute of Technology *

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Jan 9, 2024

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CHEM 181: Chemistry 1. Module 1 assignment CHEM 181: Chemistry I Assignment 1: Fundamentals of Chemistry 1. Perform the following conversions: a. 680 cm 2 to mm 2 b. 5700 g to mg c. 1.8 g/cm 3 to kg/m 3 d. 68 m/s to km/h 2. Complete the following calculations and round your answer to the correct number of significant digits: a. 25.224 ÷ 2.01 b. 222.0 x 369 c. 5.1539 – 12 d. 52.1 dm + 660 mm + 2.202 m 3. The pressure in the chemistry laboratory at SAIT was measured during a laboratory class to be 623 mmHg. Calculate the equivalent pressure using the conversion factors on your formula sheet: a. In kPa? b. In atm? c. In psi? 4. Using a yardstick to measure a metre, you find that one metre equals exactly 1.09 yards. If you buy some dental floss that is 150.0 yards in length, how many metres long is the floss? 5. List the three states of matter.
CHEM 181: Chemistry 1. Module 1 assignment 6. Classify the following substances as pure substances or mixtures . If it a pure substance, then further indicate whether it is an element or compound ; if it is a mixture, then indicate whether it is homogeneous of heterogeneous . a. Helium gas (used to inflate a balloon) b. Air c. A lead weight d. Soil e. Carbon Dioxide f. Tap Water 7. Indicate whether each of the following is a physical or a chemical change. a. The fender of a car turns reddish brown b. Evaporation of finger nail polish c. Burning wood in a campfire d. Fading of a carpet upon exposure to sunlight e. A passing train flattening a penny placed on a railroad track f. Defrosting a freezer (ice melting to liquid water) 8. Complete the table below by filling in All Blank Spaces: Complete Symbol Atom or Ion? Mass number Atomic number Number of protons Number of neutrons Number of electrons 14 7 N 𝑂 8 16 2− 107 47 46 9. Complete the table below Compound name (IUPAC) Chemical formula Ion or Molecule or Acid potassium chloride Cu 2 O HClO 4 sulfur hexafluoride cobalt (III) carbonate
CHEM 181: Chemistry 1. Module 1 assignment
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