Umar dissolves some iodine in ethanol. He decides to measure the boiling point of the solution. He knows that pure ethanol boils at 79C. Will the boiling point of the solution the be the same, higher or lower?

Use examples from the article to explain one positive and one negative effect that chemistry has had on society

Aluminum reacts with chlorine gas to form aluminum chloride via the following reaction: 2al(s)+3cl2(g)→2alcl3(s) what is the maximum mass of aluminum chloride that can be formed when reacting 32.0 g of aluminum with 37.0 g of chlorine? express your answer to three significant figures and include the appropriate units.

Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.