3)a beaker has a mass of 12g what is the mass of this beaker in decigrams

Achemistry student weighs out of phosphoric acid , a triprotic acid, into a volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with solution. calculate the volume of solution the student will need to add to reach the final equivalence point. round your answer to significant digits.

Balance this equation co2(g) + h2o (g) show that the balanced equation obeys the law if conversation of mass

Alarge marble is dropped in a graduated cylinder with 35ml of water in it.the water level increases to 49ml.what is the volume of the marble