If you needed to heat up 800.0 grams of water from 20.0°C to 100.0 °C to boil pasta, how much energy would you use? a)130. kJ
b)66.9 k]
c)268 kJ
d)334 kJ

Enough of a monoprotic weak acid is dissolved in water to produce a 0.0172 m solution. if the ph of the resulting solution is 2.39 at 20 °c, determine the pka for the acid.

Asap! how do you lengthen a pattern piece? (family and consumer science, sewing)

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?