THIS IS 7TH GRADE SCIENCE. PLEASE HELP ME ILL MARK BRAINLIEST HEP! :( Write a short paragraph on this concept: You are a superhero that invented a machine that can control gravity (make it stronger or more weak). Tell about why you made it and the kinds of things you would use it for (you must include one way you would use it to increase gravity and one way to weaken gravity) and why you would do it.

Which formula can be used to calculate the molar mass of hydrogen peroxide

)benzene and toluene form nearly ideal solutions. consider an equimolar solution of benzene and toluene. at 20 °c the vapour pressures of pure benzene and toluene are 9.9 kpa and 2.9 kpa, respectively. the solution is boiled by reducing the external pressure below the vapour pressure. calculate (i) the pressure when boiling begins, (ii) the composition of each component in the vapour, and (iii) the vapour pressure when only a few drops of liquid remain. assume that the rate of vaporization is low enough for the temperature to remain constant at 20 °c.

Substance a is a nonpolar liquid and has only dispersion forces among its constituent particles. substance b is also a nonpolar liquid and has about the same magnitude of dispersion forces among its constituent particles. when substance a and b are combined, they spontaneously mix.