PLS HELP ASAP this student's experiment had an additional variable that made the conclusion unreliable. What was the additional variable, and how did it affect the experiment? Hint there are 16 tablespoons in a cup, so one tablespoon is 6.25 percent of one cup

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

Melissa is interested in her family tree and how her family has changed over its many generations. melissa probably more closely resembles

What does a complete balanced chemical equation include? a. exothermic coefficients b. endothermic coefficients c. valence electrons d. molar coefficients