PLEASE HELP In a lab, strontium (Sr) and oxygen (O2) are combined to produce strontium oxide (SrO). After balancing this reaction, determine how many grams of strontium oxide are produced by the complete reaction of 19.6 grams of strontium. Express your answer to the correct number of significant figures.
The mass of the SrO is ___ grams.

What is the correct term for living the most sustainable life you can within your current circumstances?

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

How could a student test the effect of removing heat from a gas that is stored in a sealed container? what must occur in order for matter to change states?