Katrina inserts a key into her car's ignition. she turns the key, putting her car into ignition mode. in this mode, some energy is used to increase the temperature of the car's fuel. this energy allows the fuel to combust and the car to move. what's this energy called? select one: a. absorbed energy b. activation energy c. chemical energy d. released energy

If a 12-v battery is connected to a circuit that has a current of 3.0 a, what is the total resistance in the circuit? 36 ohms 4 ohms 0.25 ohms

The covalent compound acetylene, which is the fuel of the oxyacetylene torch used by welders, has the molecular formula c2h2. the covalent compound benzene, a commercial solvent, has the molecular formula c6h6 each of these covalent compounds contains carbon and hydrogen atoms in a one-to-one ratio. would it be correct to write the chemical formulas of each as ch? explain.

Which statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?