express in g\cm^3 a)2700kg/m^3

100 cm = 1 m ... (100 cm)^3 = (1 m)^3

1000 g = 1 kg

2700kg/m^3 = 2.7*10^6 g/m^3.

2.7*10^6 g/m^3 * 1m^3/10^6cm^3 = 2.7 g/cm^3.

To convert 2700 kg/m^3 to g/cm^3, you need to perform the following steps:

Step 1: Convert kg to g
Since 1 kg is equal to 1000 g, multiply the given density of 2700 kg/m^3 by 1000 to convert it to g/m^3.

2700 kg/m^3 * 1000 g/kg = 2700000 g/m^3

Step 2: Convert m^3 to cm^3
Since 1 m^3 is equal to 1,000,000 cm^3 (since 1 meter = 100 centimeters, and the volume is cubed), divide the density in g/m^3 by 1,000,000 to convert it to g/cm^3.

2700000 g/m^3 / 1000000 cm^3/m^3 = 2.7 g/cm^3

So, the density of 2700 kg/m^3 is equivalent to 2.7 g/cm^3.