HELPP PLEASEE!! 7. Which of the following statements is accurate? *
A. The nucleus makes up the majority of the volume of an atom.
B. The nucleus makes up the majority of the size of an atom.
C. The electron cloud makes up the majority of the mass of an atom.

D. The electron cloud makes up the majority of the volume of an atom.

Suppose that during that icy hot lab 65,000 j of energy were transferred to 450 g of water at 20°c what would have have been the final temperature of the water

Mike and mitchell decide to have a foot race. they mark off a stretch of 100 yards, and recruit cindy to work the stopwatch. after running the race and looking at the results, cindy declared that mitchell was the fastest. so how did the boys times compare?

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.