2. Which one of the following salts can be prepared from its elements by direct synthesis? A. Magnesium chloride
В. Copper (11) carbonate.
C .Potassium sulphate
D. Lead (II) nitrate

The table lists pressure and volume values for a particular gas. which is the best estimate for the value of v at p = 7.0 × 103 pascals?

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

Which statement best describes the flow of energy in this scenario