An empty cylindrical canister 1.50 m long and 91.0 cm in diameter is to be filled with pure oxygen at 25.0 c to store in a space station. to hold as much gas as possible, the absolute pressure of the oxygen will be 21.7atm . the molar mass of oxygen is 32.0g/mol .finda. how many moles of oxygen does this canister hold? b. for someone lifting this canister, by how many kilograms does this gas increase the mass to be lifted?

Astudent creates a model of a closed ecosystem by filling a glass tank half full with water, then adding 10 snails and two small aquatic plants. the next day, all the snails are dead. what is the most likely cause of their death?

Asilver dollar is dropped from the top of a building that is 1324 feet tall. use the position function below for free-falling objects. s(t) = −16t2 + v0t + s0 (a) determine the position and velocity functions for the coin. s(t) = v(t) = (b) determine the average velocity on the interval [1, 2]. ft/s (c) find the instantaneous velocities when t = 1 second and t = 2 seconds. v(1) = ft/s v(2) = ft/s (d) find the time required for the coin to reach the ground level. (round your answer to three decimal places.) t = s (e) find the velocity of the coin at impact. (round your answer to three decimal places.) ft/s

The items in the following list are all units of matter. which is the smallest unit that retains the properties of the matter? a.) atom b.) compound c.) electron d.) element