Phenolphthalein is treated with a solution and colour remains unchanged, what may be the contained in vessel among acid, base and salt solution. How can it be further tested to confirm it?​

What provides structure to the human body?

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here

What is the correct name for the compound cocl3? a) cobalt(i) chloride b) cobalt(i) chlorate c) cobalt(ii) chlorate d) cobalt(iii) chloride