Can someone me find the element of the periodic table for radium the atomic number is 88 the symbol is ra the atomic mass is 226.025 solve this for me and round 226.025

24. a sports ball is inflated to an internal pressure of 1.85 atm at room temperature (25 °c). if the ball is then played with outside where the temperature is 7.5 °c, what will be the new pressure of the ball? assume the ball does not change in volume nor does any air leak from the ball a) 0.555 atm b) 1.74 atm c) 1.85 atm d) 1.97 atm

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.

20 pts ‼️ an unmanned spacecraft travels to mars. mars has a lower strength of gravity than earth. where in the image is the spacecraft’s weight the greatest?