7. Convert 5.2 cm of magnesium (Mg) ribbon to mm of Mg ribbon.

52 mm

Explanation:

We are given;

5.2 cm of magnesium

Required to convert it to cm

We are going to use the appropriate conversion factor;

The units used to measure length include;

Kilometer (km)

10

Hectometer (Hm)

10

Decameter (dkm)

10

Meter (m)

10

Decimeter (dm)

10

Centimeter (cm)

10

Millimeter (mm)

Therefore; the appropriate conversion factor is 10mm/cm

Thus;

5.2 cm will be equivalent to;

= 5.2 cm * 10 mm/cm

= 52 mm

Therefore, the length of magnesium ribbon is 52 mm