What volume is needed to store 0.050 moles of helium gas at 202.6 kpa and 400 k? (given: r = 8.314 l∙kpa/k∙mol)
a) 1.218 l
b) 121.8 l
c) 0.820 l
d) 8.21 l
e) 82.1 l

Describe the interaction that occurs between two objects with the same electrical charge.

What state of matter is ice a. liquid b. element c. solid d. gas

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