The product from the hydration of an alkene is mixed with acidified aqueous KMnO4 and heat. At the end of the experiment, the colour of the KMnO4 solution is purple. Which of the following could be the alkene that was used?

A) Ethene
B) Propene
C) Isobutylene
D) 1,3-butadiene

Choose all the answers that apply. ionic compounds dissolve easily in water do not dissolve in water have low melting points have high melting points conduct electricity when melted

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

What is the most common reason for matter changing its state?