Calculate the concentration in % (m/m) of the following solution : 0.410 mil in 20.0 g of water

Why are people not able to skip a dive to the deepest part of the ocean

What is the chemical name of the compound na2co3? use the list of polyatomic ions and the periodic table to you answer. a. sodium carbon oxide b. sodium carbonate c. sodium(ll) carbonate d. sodium oxalate

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?