Question

3) A student weights out 15cm of the liquid benzene. If the density of this liquid is 0.8 g/cm', what mass corresponds to this volume points) 4) Complete the following table of SI units and symbols (2 points) SYMBOL QUANTITY Time Temperature Mass UNIT Second 5) The temperature of Mars is, on average, -19°C. What is this temperature in Kelvin? (2 points) 6) Identify the following elements from their symbols, or, give the symbol for that element where applicable (4 points) Symbol Element Carbon Copper Calcium Pb Bromine Helium

Answer 1

3) - volume of liquid = 15cm² density of liquid=0.8 g/cm3 Borila densite : Mass mass = density x volume (0.8 grims (15 cm) = 12g 4) SYMBOL - QUANTITY / UNIT Time second Temperature | Kelvin Mass kilogram so Temperature on Mars = -19% Temperature in Kelvin = T2+273 = -19+273 = 254 K SIMBOL (au copper ca ELEMENT carbon copper calcium Lead (Plumbum) Bromine Helium potassium Gold caurum) Pb By