How do how do you know the number of valence electrons in an atom from the periodic table? user: how do you know the number of valence electrons from the periodic table?

How many moles of gas are present if p=11 atm, v=12l, t=185k?

Which fact represents evidence for the big bang theory?

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)]