The materials cycled through ecosystems during the nitrogen cycle and the carbon cycle

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '

24. a sports ball is inflated to an internal pressure of 1.85 atm at room temperature (25 °c). if the ball is then played with outside where the temperature is 7.5 °c, what will be the new pressure of the ball? assume the ball does not change in volume nor does any air leak from the ball a) 0.555 atm b) 1.74 atm c) 1.85 atm d) 1.97 atm

Find the mass in grams of 1.37x1020 particles of h3po4