IT IS URGENT what is the specific heat of a substance that took 5000 J to change 20 K and has a mass or 3 kg?

The molar mass of a substance is defined as the mass of 1 mol of that substance, expressed in grams per mole, and is equal to the mass of 6.022 × 10 23 atoms, molecules, or formula units of that substance.

Is a renewable energy source that's highly environmentally friendly.hope this is what you're looking for. have a great day! : d

Answer/when the cell uses energy;