Chemistry > QUESTIONS & ANSWERS > CHM 1030 Unit 1 (All)
CHM 1030 Unit 1
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1. Which of the items below would be considered the densest? Wood 2. A piece of wood with a volume of 2.5 L and a mass of 12.5 kg Density = mass = 12.5kg = 5kg/L volume 2.5 L 3. A ball with a vol... ume of 139 mL and a mass of 93 g D = 93g = .67g/mL 139mL 4. A tire with a volume of 2.12 L and a mass of 4.22 x 104 mg D = 42200mg = 19905 mg/L 2.12L 5. A wire with a volume of 3.91 x 10-7 L and a mass of 7.93 x 10-1 ng D = .793mg = 2,033,333.33 mg/L .000000391L 6. A block of metal with a volume of 1350 mL and a mass of 1.29 x 103 g D = 1290g = .95 g/mL 1350mL 7. Element X has three naturally occurring isotopes. The masses (amu) and percent abundances of the three isotopes are given below. Show your work and calculate the average atomic mass of the element in amu units. Average atomic mass = (abundance) (mass amu) + (abundance) (mass amu) (.932581) (38.9637) + (.067302) (40.9618) = 36.34 amu + 2.76 amu = 39.1 amu [Show More]
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