In tan M+ DTLCL . VA 12. A graduated cylinder weighed 68.1 g. To the cylinder we

Question

In tan M+ DTLCL . VA 12. A graduated cylinder weighed 68.1 g. To the cylinder were added 58.2 g of water and 5.318 g of Sodium Chloride. What was the total mass of the cylinder and the solution Express the answer to the correct number of significant figures. 1401 15 3097 749 83 Bi 209 13. Vanadium metal is added to steel to impart strength. The density of vanadium is 5.96 g/cm3. Express this in SI units (kg/m). 14 The calorie, the Btu (British thermal unit), and the joule are units of energy; 1 calorie 4.184 joules (exact), and 1Btu 252.0 calories. Convert 3.15 Btu to joules. The estimated amount of recoverable oil from the field at Prudhoe Bay in Alaska is 9.6x 109 barrels. What is this amount of oil in cubic meters (m3)? One barrel = 42 gal (exact), 1 gal-4 qt (exact), and I qt-9.46 x 104 m 3 15.

Explanation / Answer

(12)

Total mass of cylinder and solution = 68.1 + 58.2 + 5.318 = 131.618 g

(13)

1 g/cm3 = 1000 kg/m3

So,

Density = 5.96 kg/m3

(14)

1 Btu = 252 cal = 252*4.184 J = 1054.368 J

So,

3.15 Btu = 3.15*1054.368 = 3321.2592 J

Hope this helps !

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