1. Use Table 1.4 from your textbook to calculate the mass or volume for the foll

Question

1. Use Table 1.4 from your textbook to calculate the mass or volume for the following samples of substances, then calculate the number of moles and atoms/molecules in each case.

a. Ethanol (C2H6O), 500 mL

b. Lead, 0.35 lb

c. Gold, 29.57 mL

d. Sucrose (C12H22O11), 755 g

e. Sodium chloride (NaCl), 1.75 kg

Table 1.4:

TABLE 1.4 The Density of Some Common Substances at 20 °C Density (g/cm3) 0.57 Substance Charcoal (from oak) Ethanol 0.789 0.917 (at0 °C) 1.00 (at 4 °C) 1.58 2.16 Water Sugar (sucrose) Table salt (sodium chloride) Glass Aluminunm Titanium Iron Copper Lead Mercury Gold Platinum 2.6 2.70 4.51 11.4 13.55 19.3 21.4

Explanation / Answer

a) Ethanol 500 mL * 0.789 g/cm3 * 1cm3/1 mL = 394.5 g

b) Lead, 0.35 lb

0.36 lb * (453.59 g/ 1lb) * (1 cm3/11.4 g) = 14.34 cm3

c) Gold, 29.57 mL

29.57 mL * (19.3 g/mL) = 570.701 g

d) Sucrose (C12H22O11), 755 g

755g / (1.58 g/cm3) = 477.84 cm3

e) Sodium chloride (NaCl), 1.75 kg

1.75 kg * (1000g/1Kg) *(1 cm3/ 2.16 g) = 810.18 cm3

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.