Which of the following has high gravimetric density (KWh/kg?  *1 pointNatural GasHydrogenDiesel

The gravimetric energy density of a substance is the amount of energy stored per unit mass. This is a crucial factor in many applications, including transportation and energy storage.

1. Natural Gas: Natural gas has a gravimetric energy density of about 13.6 kWh/kg.

2. Hydrogen: Hydrogen, despite being the lightest element, has a high energy density by weight. It's about 33.6 kWh/kg. However, its energy density by volume is quite low, which presents storage challenges.

3. Diesel: Diesel fuel has a gravimetric energy density of about 12 kWh/kg.

So, among Natural Gas, Hydrogen, and Diesel, Hydrogen has the highest gravimetric energy density (KWh/kg).