Using the formula Q=mc AT, what is the specific heat of a substance that took 5000 ) to change 20 K and has a mass or 3 kg? Round to two decimals​

Which real-world scenarios below represent physical and chemical changes? -running a car -exploding fireworks -mixing water and powdered drink mix -combining oil and vinegar to make salad dressing -taking aspirin for a headache -diluting bleach with water-digesting dinner-spreading peanut butter on bread

Acompound has a molecular weight of 12.124 atomic mass units and the empirical formula c3h40. what is the molecular formula of the compound?

What type of radiation is lead emitting in the following equation? alpha particles beta particles gamma rays