Five standard solutions of hbr are prepared by serial dilution in which, at each stage, 10.00 ml are diluted to 150.00 ml. given that the concentration of the most dilute solution is 2.77 × 10−6 m, determine the concentration of the original hbr stock solution.

How hot is the suns corona? (integrated science)

Acalorimeter is to be calibrated: 51.203 g of water at 55.2 degree c is added to a calorimeter containing 49.783 g of water at 23.5c. after stirring and waiting for the system to equilibrate, the final temperature reached is 37.6 degree c. specific heat capacity of water (s = 4.18 j/g∙degree c). calculate the calorimeter constant. (smδt)warm water = -[(smδt)cold water + (calorimeterδtcold water)]

What four properties do all waves have in common