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1.46. Classify each of the following properties as physical or chemical.a)The boiling point of ethyl alcohol- physical b)The temperature at which dry ice evaporates- physicalc)The tendency of iron to rust- chemicald)The color of cold- physical1.48. Classify each of the following changes as physical or chemical.a)Sugar burns when heated on a skillet – chemical
b)Sugar dissolves in water- physicalc)A platinum ring becomes dull because of continued abrasion- physicald)A silver surface becomes tarnished after exposure to air for a long period of time- chemical1.52. Perform each of the following temperature conversions.a)212 F = 100 Cb)22 C = 295 Kc)0.00K = - 459 Fd)2.735K= - 270.415C1.58. Express the quantity 254, 998 m in each of the following:c)2.54998 x 108mmd)2.54998 x 107mm1.62. Calculate the density of titanium in g/ cm3.1.66. Acetone has a density of 0. 7857g/cm3a)Calculate the mass (in g) of 28.56 mL of acetoned=m/V b)Calculate the volume (in mL) of 6.54 g of acetone.1.72. How many significant figures are in each of the following numbers?a)0.1111 s4 sig figsb)0.007 m1 sig fig (leading zeros are not significant)c)108,700 km4 sig figs (trailing zeros with no decimal are not significant)d)1.563300 x 1011m7 sig figs (trailing zeros with decimal are significant)e)30,8003 sig figs (trailing zeros with no decimal are not significant)1.78. Perform the following calculations to the correct number of significant figures.