Isabel and Ruth scored a total of twenty-two points in their last basketball game scored two more points than Isabelle. How many points did Isabel score? A:2x-2=22; x=12
B:x+2=22; x=20
C:2x+2=22; x=10
D:2x+2=22; x=12

Achemistry student weighs out 0.306 g of citric acid (h3c6h5o7), a triprotic acid, into a 250 ml volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with 0.1000 m naoh solution. calculate the volume of naoh solution the student will need to add to reach the final equivalence point. be sure your answer has the correct number of significant digits.