Number the elements sodium , magnesium, and potassium in the predicted order from the largest to the smallest

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.

In the space, show a correct numerical setup for calculating the number of moles of co2 present in 11 grams of co2

How might this scientific phenomena be explained? a paper clip floats on water.