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

What are the different tools of for art assessment ? Give a short descriptions for each?

A region satisfies the inequalities 2 ≤ x ≤ 6 and 3 ≤ y ≤a. What value of a would give the region an area of 24 square units?

Find the marked angles in each of the following. (where a point O is given it is the centre of the circle.)

Triangle ABC is an isoceles triangle. find the missing angles and side measures.

CHIOSING BRAINLIEST EAST ASIA - Why do you think regions like East Asia were susceptible to foreign exploitation and influence across the 20th century?

MESSAGE ME GlRLS .......fast ttsttst

This food web represents a community in a rain forest.

The value of Mr. Dulaney's car x years after its purchase is given by the function V(x) = 15, 000(0.87)^x. Approximately, what was the value of Mr. Dulaney's ca

The value set for is known as: the rejection level the acceptance level the significance level the error in the hypothesis test

Answer to this???????