It requires two sticks of butter to make a batch of 20 cookies. How much butter will it take to make 150 cookies?

What problem would a person have if the nucleic acid in one of his or her cells were damaged?

Name the element in group 17, period 2. (periodic table)

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)]