Cheryl is going to investigate if the amount of vinegar added to baking soda affects the amount of carbon dioxide gas produced when they are mixed together. She gets four flasks that are the same size. She adds 25 mL of vinegar to the first flask, 50 mL of vinegar to the second flask, 75 mL of vinegar to the third flask, and 100 mL vinegar to the fourth flask. She attaches a balloon filled with 15 g of baking soda to the top of each flask. She tips the balloons to add the baking soda to the vinegar and then measures the size (diameter) of each balloon after 1 minute. What is Cheryl's IV? What is Cheryl's DV? What are three constants in Cheryl's experiment? What is a possible hypothesis for Cheryl's experiment?

Chemical energy is a form of a. kinetic energy only. b. both potential and kinetic energy. c. neither potential nor kinetic energy. d. potential energy only. reset

Plz me ! 1 which of earths spheres contains most of its mass? a atmosphere b hydrosphere c geosphere* d biosphere 2 erosion and weathering are examples of which types of forces? a constructive forces b destructive forces* c gravitational forces d inertia-related forces 3 which of the following statements about earths atmosphere is true? a earths atmosphere contains 78% water vapor which is essentail to life b earths atmosphere contains 21% oxygen c earths atmosphere contains carbon dioxide which all life forms require d earths atmosphere allows radiation from the sun to pass through it and warm earths surface* 4 the strenght of the force of gravity between two objects is determined by which of the following factors? select all that apply a the messes of the objects* b the distance between the objects* c the volumes of the objects d the surface area of the objects 5 earth and moon are kept in there respective orbits due to the influence of a inertia b gravity c gravity and inertia* d neither gravity or inertia if you answer all questions right i will give

Acm ruler with main graduations from 1 to 10 from left to right there are 10 secondary graduations between each of the main graduations there is a line that begins. at the left end of the ruler 10 secondary graduations to the left of the “1 main graduation the right end of the line ends on the eighth secondary graduation to the right of 3 how long is the line