How can you prepare 250cm^3 of 0.5 MgSo4 from a stock solution of 2.5 MgSo4?​

Which type of stress results when two plates push against one another? a. compression b. tension c. force d. shear

In order to calculate the amount of heat transferred you must know the __ and specific heat of the material, as well as the change in temperature. a. volume b. density c. mass d. enthalpy

Aroom with dimensions 7.00m×8.00m×2.50m is to be filled with pure oxygen at 22.0∘c and 1.00 atm. the molar mass of oxygen is 32.0 g/mol. how many moles noxygen of oxygen are required to fill the room? what is the mass moxygen of this oxygen?