CarmelBeard CarmelBeard

04-06-2015
Chemistry

contestada

Which change is exothermic?
(1) freezing of water(2) melting of iron(3) vaporization of ethanol(4) sublimation of iodine

Respuesta :

lulu1991 lulu1991

25-06-2015

The answer is (1) freezing of water. The energy of different status is increase from solid to liquid to gas. So the change of liquid to solid is exothermic. The other three are endothermic.

Answer Link

Otras preguntas

Which of the following statements is true concerning LUCA? (1) LUCA was a cell. (2) All life on Earth evolved from LUCA. (3) LUCA probably existed probably arou

The value square root of 53 of lies between which two consecutive integers?

Determine whether the sequence coverage or diverges. If it converges, give the limit. 48, 8, 4/3, 2/9, ...

Natalie earns $2.50 for each cd she sells and $3.50 for each dvd she sells. Natalie sold 45 dvds last year. She earned a total of $780 last year selling cds a

What is biogeography and what does it provide?

What are the 3 features of a typical seigneurie

you measure or observe two events to occur at the same time one nearby and one further away. Which one did you actually see first?

What is biogeography and what does it provide?

Which of the following statements is true concerning LUCA? (1) LUCA was a cell. (2) All life on Earth evolved from LUCA. (3) LUCA probably existed probably arou

The height of a rectangular prism with a 20 cm by 12 cm base and a 30 cm diagonal.find the unknown dimension