You wash dishes for a chemistry laboratory to make extra money for laundry. you earn 12 dollars/hour, and each shift lasts 75 minutes. your laundry requires 12 quarters/load. how many loads of laundry will each shift pay for if the cost per load rises to 16 quarters?

13. a covalent bond between two atoms is likely to be polar if: a. one of the atoms is much more electronegative than the other. b. the two atoms are equally electronegative. c. the two atoms are of the same element. d. the bond is part of a tetrahedrally shaped molecule. e. one atom is an anion.

Inside a flashbulb, oxygen surrounds a thin coil of magnesium. when the flashbulb is set off, a chemical reaction takes place in which magnesium combines with oxygen to form magnesium oxide. which of the chemical equations matches the reaction above? a. mg + o2 mgo2 + energy b. 2mg + o mg2o + energy c. 2mg + o2 2mgo + energy d. mg + o mgo + energy

Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.