21. A chemistry teacher needed 200 mL of 1.5 M Na2 S2O3(molar mass 158 g/mole). How many grams should the teacher measure out?

Aroller coaster is traveling at 13 mi./s when you purchase a hill that is 400 m long and down the hill exonerate at 4.0 m/s squared what is the final velocity of the posterior found your answer to the nearest number

The organs inside the body and how they function together

Amedication is given at a dosage of 3.000 mg of medication per kg of body weight. if 0.1500 g of medication is given, then what was the patient's weight in pounds (lbs)? there are 453.59g in 1 lb.