"decrease" would be your answer
They are good conductors of electricity
they have a react vigorously with water
reactivity increases down the group
The density of sucrose is 1.58 g/ cm³
<em><u>Calculation</u></em>
Step 1 : calculate the volume of benzene
volume = mass/density
mass of benzene = total mass - mass of sucrose
=17.33 g - 9.35 g =7.98 g
volume = 7.98 / 0.879 =9.08 cm³
Step 2: calculate the volume of sucrose
volume of sucrose= Total volume - volume of benzene
Total volume = 15 ml =15 cm³
volume of sucrose is therefore = 15 cm³ - 9.08 cm³=5.92 cm³
Step 4: calculate the density of sucrose
density = mass/volume
= 9.35 g / 5.92 cm³ = 1.58 g/cm³
