20 points!! Which numerical setup can be used to calculate the heat energy required to completely melt 100. grams of H2O(s) at 0°C?
A) (100. g)(334 J/g)
B) (100. g)(2260 J/g)
C) (100. g)(4.18 J/g•K)(0°C)
D) (100. g)(4.18 J/g•K)(273 K)

One of the few xenon compounds that form is cesium xenon heptafluoride (csxef7). how many moles of csxef7 can be produced from the reaction of 13.0 mol cesium fluoride with 12.5 mol xenon hexafluoride? csf(s) + xef6(s) csxef7(s)

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

What is the polyatamic ion of borate