What does Newton's law of gravitation state that two masses will do? A always fall
B repel each other
C attract each other
D not have any affect on each other
PLZ HURRY ITS THE LAST DAY OF SCHOOL FOR ME AND I HAVE 2 HOURS LEFT

Iwill give extra points to who gets this right

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.

Which elements are found in glucose, the product of photosynthesis? a. carbon, hydrogen, and oxygen b. carbon and hydrogen c. carbon, nitrogen, and oxygen d. hydrogen, nitrogen, and carbon