Question

Rajiv investigates the water content of some soils.

here is his method .
1. measures the mass of an evaporating dish
2. adds 20g of soil into a drying oven for 24 hours
3. measures the new mass of the dish and the soil
4. does this with four more different soil

Answer 1

Rajiv is investigating the water content of different soils using a gravimetric analysis technique. He measures the mass of an evaporating dish, adds soil to a drying oven, and measures the new mass after drying. The water content is calculated using the change in mass. This method helps Rajiv understand the differences in water retention among different soils.

Step-by-step explanation:

Rajiv is investigating the water content of different soils. His method involves measuring the mass of an evaporating dish, adding 20g of soil into a drying oven for 24 hours, and then measuring the new mass of the dish and the soil. He repeats this process with four more different soils.

This method is a gravimetric analysis technique commonly used to determine the water content of a sample. By measuring the change in mass before and after drying, Rajiv can calculate the amount of water present in each soil sample.

To determine the water content, Rajiv will use the following equation:

Water Content = (Initial Mass - Final Mass) / Initial Mass

By comparing the water content of different soils, Rajiv can investigate the differences in water retention and drainage capabilities.