14. A 70 N tight rope walker is walking 20 meters above ground. About how much Gravitational Potential Energy does the performer have? 1,400 J 1,200 J 800 J

Which of the following signs of a chemical reaction are observed in the reaction of potassium with water? precipitate formed temperature change smell produced gas produced color change

Covalent bonds generally form when the bonded elements have a difference in electronegativity less than 1.5. subtract the electronegativities for the following pairs of elements and predict whether they form a covalent bond. electronegativity difference of c and c: ionic covalent electronegativity difference of mg and cl: ionic covalent

Spaghetti sauce can be high in sodium. what is a good guideline for mg of sodium per half cup serving? a. less than 1 mg b. less than 800 mg c. less than 700 mg d. less than 400 mg