What information do we still require to accurately model the carbon cycle and predict future impacts of carbon emissions

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 statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?

If you burn 46.6 g of hydrogen and produce 416 g of water, how much oxygen reacted