Select the two variables that are held constant when testing boyle's law in a manometer. pressure temperature volume of gas mass of gas atmospheric pressure

a) Temperature  

b) Mass of gas

Explanation:

The Boyles’ law states that the pressure of a gas is inversely proportional to its volume (with a fixed mass). This has been proved when temperature was kept constant.

Thus, overall there were two quantities that were not changed during Boyle’s experiment  

a)Temperature  

b)Mass of gas

Hence, the formula for Boyle’s law is as follows  

Where  P is pressure

V is volume and k is constant

you did not attach the discourse, but i assume it to be the discourse on the origin and basis of inequality among men (the original titile in french is: "discours sur l'origine et les fondements de l'inégalité parmi les hommes"), also know as "second discourse". in this discourse, jean-jacques rousseau emphasizes that private property is the basis of all inequalities.

therefore, what enabled the old regime to maintain as long as it did was private property.

the main thing i would use is bricks because if there is a hurricane, there is a great possibility for the house to still stand. and i would also use plexiglass windows instead of regular windows because plexiglass isn't prone to breaking.