We dissolve 2.45 g of sugar in 200.0 g water. what is the mass percent of sugar in the solution?

Agas mixture with a total pressure of 745 mmhg contains each of the following gases at the indicated partial pressures: co2, 245 mmhg ; ar, 119 mmhg ; and o2, 163 mmhg . the mixture also contains helium gas. part a what is the partial pressure of the helium gas? phe p h e = nothing mmhg request answer part b what mass of helium gas is present in a 10.2-l sample of this mixture at 283 k ? m m = nothing g request answer

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?

How do i turn 2 s into one in the products