1) a) The density of titanium metal is 4.51 g/cm3 at 25 °C. what mass of titanium displaces 125.0 ml of water at 25 °C?
b) The density of benzene at 15 °C is 0.8787 g/mL. calculate the mass of 0.1500 L of benzene at this temperture.
2) Indicate the number of significant figures in each of the following measured quantities: (a) 3.774 km, (b) 205 m2, (c) 1.700 cm, (d) 350.00 k, (e) 307.080 g, (f) 1.3 x 10^3 m/s.