The molecular formula mass of this compound is 90.0 amu . What are the subscripts in the actual molecular formula?

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

__can be defined as which velocity changes

The rules of engagement (roe) working group is often used to (select all that apply.)