Determine the mass [kg] of the compressed air in a scuba diving tank given the following information. the internal volume of the tank is 10 liters [l] and the absolute pressure inside the tank is 20.8 mega pascal [mpa]. the temperature of the air inside the tank is 20 degrees celsius [oc]. use the ideal gas law to solve for the mass. the ideal gas law is given by:

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine

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Astone is thrown with a speed v0 and returns to earth, as the drawing shows. ignore friction and air resistance, and consider the initial and final locations of the stone. which one of the following correctly describes the change δpe in the gravitational potential energy and the change δke in the kinetic energy of the stone as it moves from its initial to its final location? options a.δpe = 0 j and δke = 0 j b.δpe is positive and δke is negative c.δpe = 0 j and δke is positive d.δpe is negative and δke is positive e.δpe = 0 j and δke is negative