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

how did jazz demonstrate the independent spirit of the times?

her investment grew 22% to$610 how much did she invest____ ( solve as an equation or fraction)

how do you write fraction 9/10 as a decimaland how to convert fractions into decimals

determine whether each expression is meaningful as a real number yes or no? -√9

What are the possible values for x in the equation 4x^2 = 64(1) x=0 (2) x=4 (3) x=4,-4 (4) x=0,4,-4

write the equation in function form then graph it 5x-2y=6 thx to the ppl who help

write the equation in function form.then graph the equation x-3y=-9 ???

n^2+7n+15=5 show work please

you are building a birdhouse that will have a volume of 128 in^3. the birdhouse will have the dimensions shown a. write a polynomial that represents the volume

Which is an example of bivariate data?(1) age of students in a club(2) grade level and age of students in a school(3) type of lunch each student orders at schoo