In the phase diagram for substance X, what is the triple point of substance X?
A) 0°C, 0 atm
B) 22°C, 4 atm
C) 29°C, 2.2 atm
D) 60°C, 5 atm

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

For each of the compounds below, show that the charges on the ions add up to zero. a. kbr b. cao c. li(2)o d. cacl(2) e. alcl(3)

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)]